- DL manuals
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- 2000
- Instruction & Reference Manual
Rabbit 2000 Instruction & Reference Manual
Summary of 2000
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Rabbit 2000 /3000 microprocessor instruction reference manual 019–0098 f • 040114 this manual (or an even more up-to-date revision) is available for free download at the rabbit website: www.Rabbitsemiconductor.Com.
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Ii rabbit 2000/3000 microprocessor.
Page 3: Table Of Contents
Instruction reference manual iii table of contents 1. Alphabetical listing of instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. Instructions listed by group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. Docume...
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Iv rabbit 2000 microprocessor.
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Instruction reference manual 1 1. Alphabetical listing of instructions a adc a,n ..............................14 adc a,r ..............................15 adc a,(hl) .........................13 adc a,(ix+d) ......................13 adc a,(iy+d) ......................13 adc hl,ss .......................
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2 rabbit 2000/3000 microprocessor ld (iy+d),n ..........................64 ld (iy+d),r ..........................64 ld (mn),a ............................65 ld (mn),hl ..........................65 ld (mn),ix ...........................65 ld (mn),iy ...........................65 ld (mn),ss .............
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Instruction reference manual 3 2. Instructions listed by group a. Load immediate data ld dd,mn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 ld ix,mn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 ld iy,mn . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
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4 rabbit 2000/3000 microprocessor exx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 h. Stack manipulation add sp,d . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 pop ip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 pop ix . . . ....
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Instruction reference manual 5 bit b,r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 res b,(hl) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 res b,(ix+d) . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 res b,(iy+d) . . . . . . . . . . . . . . . . ....
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6 rabbit 2000/3000 microprocessor r. Miscellaneous ccf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ipset 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 ipset 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 ipset 2 . . . . ...
Page 11: 3. Document Conventions
Instruction reference manual 7 3. Document conventions instruction table key • opcode : a hexidecimal representation of the value that the mnemonic instruction represents. • instruction : the mnemonic syntax of the instruction. • clocks : the number of clock cycles it takes to complete this instruct...
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8 rabbit 2000/3000 microprocessor altd, i/o and flags table keys table 2: altd (“a” column) symbol key table 3: ioi and ioe (“i” column) symbol key table 4: flag register key flag description f r sp • altd selects alternate flags • altd selects alternate destination register • altd operation is a sp...
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Instruction reference manual 9 document symbols key table 5: symbols rabbit z180 meaning b b bit select (000 = bit 0, 001 = bit 1, 010 = bit 2, 011 = bit 3, 100 = bit 4, 101 = bit 5, 110 = bit 6, 111 = bit 7) cc cc condition code select (00 = nz, 01 = z, 10 = nc, 11 = c) d d 8-bit signed displacemen...
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10 rabbit 2000/3000 microprocessor condition codes table 6: condition code description condition flag=value description nz z=0 not zero z z=1 zero nc c=0 no carry (c=0) c c=1 carry (c=1) p s=0 positive m s=1 minus lz l/v=0 for logic operations, logic zero (all of the four most significant bits of th...
Page 15: 4. Processor Registers
Instruction reference manual 11 4. Processor registers s z lv c sign zero logical/ overflow carry ix iy sp pc index register index register stack pointer program counter general purpose external interrupt internal interrupt interrupt priority extension of program counter eir iir ip xpc accumulator f...
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12 rabbit 2000/3000 microprocessor.
Page 17: 5. Opcode Descriptions
Instruction reference manual 13 5. Opcode descriptions description the data in a is summed with the c flag and with the data in memory whose location is: • held in hl, or • the sum of the data in ix and a displacement value d, or • the sum of the data in iy and a displacement value d. The result is ...
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14 rabbit 2000/3000 microprocessor description the 8-bit constant n is summed with the c flag and with the data in a. The sum is then stored in a. Adc a, n opcode instruction clocks operation ce n adc a, n 4 (2,2) a = a + n + cf flags altd i/o s z l/v c f r sp s d • • v • • •.
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Instruction reference manual 15 description the data in a is summed with the c flag and with the data in r (any of the registers a, b, c, d, e, h, or l). The result is stored in a. Adc a, r opcode instruction clocks operation —— adc a, r 2 a = a + r + cf 8f adc a,a 2 a = a + a + cf 88 adc a,b 2 a = ...
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16 rabbit 2000/3000 microprocessor description the data in hl is summed with the c flag and with the data in ss (any of bc, de, hl, or sp). The result is stored in hl. Adc hl, ss opcode instruction clocks operation —— adc hl, ss 4 (2,2) hl = hl + ss + cf ed 4a adc hl,bc 4 (2,2) hl = hl + bc + cf ed ...
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Instruction reference manual 17 description the data in a is summed with the data in the memory location whose address is: • held in hl, or • the sum of the data in ix and a displacement value d, or • the sum of the data in iy and a displacement value d. The result is stored in a. Add a,(hl) add a,(...
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18 rabbit 2000/3000 microprocessor description the data in a is summed with the 8-bit constant n. The result is stored in a. Add a, n opcode instruction clocks operation c6 n add a, n 4 (2,2) a = a + n flags altd i/o s z l/v c f r sp s d • • v • • •.
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Instruction reference manual 19 description the data in a is summed with the data in r (any of the registers a, b, c, d, e, h, or l). The result is stored in a. Add a, r opcode instruction clocks operation —— add a, r 2 a = a + r 87 add a,a 2 a = a + a 80 add a,b 2 a = a + b 81 add a,c 2 a = a + c 8...
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20 rabbit 2000/3000 microprocessor description the data in hl is summed with the data in the ss (any of bc, de, hl, or sp). The result is stored in hl. Add hl, ss opcode instruction clocks operation —— 09 19 29 39 add hl, ss add hl,bc add hl,de add hl,hl add hl,sp 2 2 2 2 2 hl = hl + ss hl = hl + bc...
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Instruction reference manual 21 description the data in ix is summed with the xx (any of bc, de, ix, or sp). The result is stored in ix. The data in iy is summed with the yy (any of bc, de, iy, or sp). The result is stored in iy. Add ix, xx add iy, yy opcode instruction clocks operation —— dd 09 dd ...
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22 rabbit 2000/3000 microprocessor description the data in the stack pointer register (sp) is summed with the 7-bit signed displacement d, and then stored in sp. Add sp, d opcode instruction clocks operation 27 d add sp, d 4 (2,2) sp = sp + d flags altd i/o s z c f r sp s d - - - • •.
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Instruction reference manual 23 description this is an instruction prefix. Causes the instruction immediately following to affect the alternate flags, or use the alternate registers for the destination of the data, or both. For some instructions altd causes special alternate register uses, unique to...
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24 rabbit 2000/3000 microprocessor description performs a logical and operation between the byte in a and the byte whose address is: • in hl, or • the sum of the data in ix and a displacement value d, or • the sum of the data in iy and a displacement value d. The relative bits of each byte are compa...
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Instruction reference manual 25 description performs a logical and operation between the word in hl and the word in de. The relative bits of each byte are compared (i.E., bit 0 of both bytes are compared, bit 1 of both bytes are compared, etc.). The associated bit in the result byte is set only if b...
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26 rabbit 2000/3000 microprocessor description performs a logical and operation between the byte in a and the 8-bit constant n. The relative bits of each byte are compared (i.E., bit 0 of both bytes are compared, bit 1 of both bytes are compared, etc.). The associ- ated bit in the result byte is set...
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Instruction reference manual 27 description performs a logical and operation between the byte in a and the byte in r (any of the registers a, b, c, d, e, h, or l). The relative bits of each byte are compared (i.E., bit 0 of both bytes are compared, bit 1 of both bytes are compared, etc.). The associ...
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28 rabbit 2000/3000 microprocessor description tests the bit b (any of the bits 0, 1, 2, 3, 4, 5, 6, or 7) of the byte whose address is: • contained in hl, or • the sum of data in ix plus a displacement value d, or • the sum of data in iy plus a displacement value d. The z flag is set if the tested ...
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Instruction reference manual 29 description tests bit b (any of the bits 0, 1, 2, 3, 4, 5, 6, or 7) of the byte in r (any of the registers a, b, c, d, e, h, or l). The z flag is set if the tested bit is 0, reset if the bit is 1. Bit b , r opcode instruction clocks operation b,r a b c d e h l bit b,r...
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30 rabbit 2000/3000 microprocessor description if the data in hl does not equal zero, then it is set to 1. Bool hl opcode instruction clocks operation cc bool hl 2 if (hl != 0) hl = 1 flags altd i/o s z l/v c f r sp s d • • 0 0 • •.
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Instruction reference manual 31 description if the data in ix or iy does not equal zero, then that register is set to 1. Bool ix bool iy opcode instruction clocks operation dd cc bool ix 4 (2,2) if (ix != 0) ix = 1 fd cc bool iy 4 (2,2) if (iy != 0) iy = 1 flags altd i/o s z l/v c f r sp s d • • 0 0...
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32 rabbit 2000/3000 microprocessor description this instruction is used to call a subroutine. First the data in pc is pushed onto the stack. The high-order byte of pc is pushed first, then the low-order byte. Pc is then loaded with mn,16-bit address of the first instruction of the subroutine. Sp is ...
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Instruction reference manual 33 description the c flag is inverted: if it is set, it becomes cleared. If it is not set, it becomes set. Ccf opcode instruction clocks operation 3f ccf 2 cf = ~cf flags altd i/o s z l/v c f r sp s d - - - • •.
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34 rabbit 2000/3000 microprocessor description compares the data in a with the data whose address is contained in: • hl, or • the sum of the data in ix and a displacement value d, or • the sum of the data in iy and a displacement value d. These compares are accomplished by subtracting the appropriat...
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Instruction reference manual 35 description compares the data in a with an 8-bit constant n. This compare is accomplished by subtracting n from a. The result is: a a = n : s=0, c=0, z=1, l/v=v a > n : s=0, c=0, z=0, l/v=v “v” indicates that the overflow flag is set on an arithmetic overflow result. ...
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36 rabbit 2000/3000 microprocessor description compares the data in a with the data in register r (any of the registers a, b, c, d, e, h, or l). This compare is accomplished by subtracting the data in register r from a. The result is: a a = x : s=0, c=0, z=1, l/v=v a > x : s=0, c=0, z=0, l/v=v where...
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Instruction reference manual 37 description the data in a is inverted (one’s complement). Example if the data in a is 1100 0101, after the instruction cpl a will contain 0011 1010. Cpl opcode instruction clocks operation 2f cpl 2 a = ~a flags altd i/o s z l/v c f r sp s d - - - - •.
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38 rabbit 2000/3000 microprocessor description decrements the byte whose address is: • in hl, or • the data in ix plus a displacement value d, or • the data in iy plus a displacement value d. Dec (hl) dec (ix+ d ) dec (iy+ d ) opcode instruction clocks operation 35 dec (hl) 8 (2,1,2,3) (hl) = (hl) -...
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Instruction reference manual 39 description decrements the data in ix or iy. Dec ix dec iy opcode instruction clocks operation dd 2b dec ix 4 (2,2) ix = ix - 1 fd 2b dec iy 4(2,2) iy = iy - 1 flags altd i/o s z l/v c f r sp s d - - - -.
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40 rabbit 2000/3000 microprocessor description decrements the data in r (any of the registers a, b, c, d, e, h, or l). Dec r opcode instruction clocks operation —— 3d 05 0d 15 1d 25 2d dec r dec a dec b dec c dec d dec e dec h dec l 2 2 2 2 2 2 2 2 r = r - 1 a = a - 1 b = b - 1 c = c - 1 d = d - 1 e...
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Instruction reference manual 41 description decrements the data in ss (any of bc, de, hl, or sp). Dec ss opcode instruction clocks operation —— 0b 1b 2b 3b dec ss dec bc dec de dec hl dec sp 2 2 2 2 2 ss = ss - 1 bc = bc - 1 de = de - 1 hl = hl - 1 sp = sp - 1 flags altd i/o s z l/v c f r sp s d - -...
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42 rabbit 2000/3000 microprocessor description this instruction’s mnemonic stands for decrement and jump if not zero. It decrements the data in b then, if the data in b does not equal 0, it adds the 8 bit signed constant e to pc. 2 is subtracted from the value e so the instruction jumps from the cur...
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Instruction reference manual 43 description exchanges the byte in h with the data whose address is the data in sp plus 1; and exchanges the byte in l with the data whose address is the data in sp. Ex (sp),hl opcode instruction clocks operation ed 54 ex (sp),hl 15 (2,2,1,2,2,3,3) h (sp+1); l (sp) fla...
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44 rabbit 2000/3000 microprocessor description • ex (sp),ix exchanges the high order byte of ix with the data whose address is 1 plus the data in the stack pointer register, and exchanges the low order byte of ix with the data whose address is the data in the stack pointer register, sp. • ex (sp),iy...
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Instruction reference manual 45 description exchanges the data in af with the data in the alternate register af'. Ex af,af ' opcode instruction clocks operation 08 ex af,af' 2 af af' flags altd i/o s z l/v c f r sp s d - - - -.
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46 rabbit 2000/3000 microprocessor description • ex de,hl exchanges the data in de with the data in hl. If the altd instruction is present then the data in de is exchanged with the data in the alternate register hl'. • ex de',hl exchanges the data in the alternate register de' with the data in hl. I...
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Instruction reference manual 47 description exchanges the data in bc, de, and hl, with the data in their respective alternate registers bc', de', and hl'. Exx opcode instruction clocks operation d9 exx 2 bc bc'; de de'; hl hl' flags altd i/o s z l/v c f r sp s d - - - -.
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Rabbit 3000a instruction 48 rabbit 2000/3000 microprocessor description the idet instruction asserts a system mode violation interrupt if system/user mode is enabled (by writing to the enable dual mode register, edmr) and the processor is currently in user mode. Note that idet has the same opcode va...
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Instruction reference manual 49 description increments the byte whose address is: • held in hl, or • the sum of the data in ix and a displacement value d, or • the sum of the data in iy and a displacement value d. Inc (hl) inc (ix+ d ) inc (iy+ d ) opcode instruction clocks operation 34 inc (hl) 8 (...
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50 rabbit 2000/3000 microprocessor description • inc ix increments the data in ix. • inc iy increments the data in iy. Inc ix inc iy opcode instruction clocks operation dd 23 inc ix 4 (2,2) ix = ix + 1 fd 23 inc iy 4 (2,2) iy = iy + 1 flags altd i/o s z l/v c f r sp s d - - - -.
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Instruction reference manual 51 description increments the data in r (any of the registers a, b, c, d, e, h, or l). Inc r opcode instruction clocks operation —— 3c 04 0c 14 1c 24 2c inc r inc a inc b inc c inc d inc e inc h inc l 2 2 2 2 2 2 2 2 r = r + 1 a = a + 1 b = b + 1 c = c + 1 d = d + 1 e = ...
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52 rabbit 2000/3000 microprocessor description increments the data in ss (any of bc, de, hl, or sp). Inc ss opcode instruction clocks operation —— 03 13 23 33 inc ss inc bc inc de inc hl inc sp 2 2 2 2 2 ss = ss + 1 bc = bc + 1 de = de + 1 hl = hl + 1 sp = sp + 1 flags altd i/o s z l/v c f r sp s d ...
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Instruction reference manual 53 description • ioi: the ioi prefix allows the use of existing memory access instructions as internal i/o instructions. When prefixed, a 16-bit memory instruction accesses the i/o space at the address specified by the lower byte of the 16-bit address. With ioi, the uppe...
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54 rabbit 2000/3000 microprocessor description the interrupt priority register, ip is an 8-bit register that forms a stack of the current priority and the other previous 3 priorities. Ipset 0 forms the lowest priority; ipset 3 forms the highest priority. These instruc- tions are privileged. • ipset ...
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Instruction reference manual 55 description the ipres instruction rotates the contents of the interrupt priority register 2 bits to the right, replacing the current priority with the previous priority. It is impossible to interrupt during the execution of this instruction. This instruction is privil...
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56 rabbit 2000/3000 microprocessor description • jp (hl): the data in hl is loaded into pc. Thus the address of the next instruction fetched is the data in hl. • jp (ix): the data in ix is loaded into pc. Thus the address of the next instruction fetched is the data in ix. • jp (iy): the data in iy i...
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Instruction reference manual 57 description if the condition f is true then the 16-bit data mn is loaded into pc. If the condition is false then pc increments normally. The condition f is one of the following: nz, z flag not set; z, z flag set; nc, c flag not set; c, c flag set; lz, l/v flag is not ...
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58 rabbit 2000/3000 microprocessor description if condition cc is true then the 8-bit signed displacement value e is added to pc. Since the instruction takes two increments of the pc to complete, two is subtracted from the displacement value so that the displacement takes place from the instruction ...
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Instruction reference manual 59 description adds a signed constant e to pc. Since the instruction takes two increments of pc to complete, two is subtracted from the displacement value so that the displacement takes place from the instruction opcode. This instruction recognizes labels when used in th...
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60 rabbit 2000/3000 microprocessor description this instruction is similar to the call routine in that it transfers program execution to the subroutine address specified by the 16-bit operand mn. The lcall instruction is special in that it allows calls to be made to a computed address in xmem. Note ...
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Instruction reference manual 61 description • ld (bc),a: loads the memory location whose address is the data in bc with the data in a. • ld (de),a: loads the memory location whose address is the data in de with the data in a. • ld (hl),n: loads the memory location whose address is the data in hl wit...
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62 rabbit 2000/3000 microprocessor description loads the data in l into the memory location whose address is the sum of the data in hl and a displacement value d. Then, loads the data in h into the memory location whose address is the sum of the data in hl and a displacement value d plus 1. Ld (hl+ ...
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Instruction reference manual 63 description • ld (ix+d),hl: loads the data in l into the memory location whose address is the sum of the data in ix and a displacement value d. Then, loads the data in h into the memory location whose address is the sum of the data in ix and a displacement value d plu...
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64 rabbit 2000/3000 microprocessor description • ld (iy+d),hl: loads the data in l into the memory location whose address is the sum of the data in iy and a displacement value d. Then, loads the data in h into the memory location whose address is the sum of the data in iy and a displacement value d ...
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Instruction reference manual 65 description • ld (mn),a: loads the memory location whose address is mn with the data in a. • ld (mn),hl: loads the memory location whose address is mn with the data in l, then loads the memory location whose address is 1 plus mn with the data in h. • ld (mn),ix: loads...
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66 rabbit 2000/3000 microprocessor description • ld (sp+n),hl: loads the data in the l into the memory location whose address is the sum of the data in sp and the displacement n. Then loads the data in the h into the memory location whose address is the sum of the data in sp, the displacement n, and...
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Instruction reference manual 67 description loads a with the data whose address in memory is: • the data in bc, or • the data in de, or • the 16-bit constant mn. Ld a,(bc) ld a,(de) ld a,( mn ) opcode instruction clocks operation 0a ld a,(bc) 6 (2,2,2) a = (bc) 1a ld a,(de) 6 (2,2,2) a = (de) 3a n m...
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68 rabbit 2000/3000 microprocessor description • ld a,eir: loads a with the data in the external interrupt register, eir. The eir is used to specify the most significant byte (msb) of the external interrupt address. The value loaded in the eir is concatenated with the appropriate external interrupt ...
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Instruction reference manual 69 description loads a with the data in xpc. This instruction is privileged. Ld a,xpc opcode instruction clocks operation ed 77 ld a,xpc 4 (2,2) a = xpc flags altd i/o s z l/v c f r sp s d - - - - •.
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70 rabbit 2000/3000 microprocessor description loads the low-order byte of the dd (any of bc, de, hl or sp) with the data at memory address mn. Then loads the high-order byte of register dd with data at memory address mn plus 1. Ld dd ,( mn ) opcode instruction clocks operation —— ed 4b n m ed 5b n ...
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Instruction reference manual 71 description loads the alternate register dd' (any of the registers bc', de', or hl') with the data in bc or de. Ld dd ' ,bc ld dd ' ,de opcode instruction clocks operation —— ed 49 ed 59 ed 69 ld dd' ,bc ld bc',bc ld de',bc ld hl',bc 4 (2,2) 4 (2,2) 4 (2,2) 4 (2,2) dd...
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72 rabbit 2000/3000 microprocessor description loads dd (any of bc, de, hl, or sp) with the 16-bit value mn. Ld dd , mn opcode instruction clocks operation —— 01 n m 11 n m 21 n m 31 n m ld dd , mn ld bc, mn ld de, mn ld hl, mn ld sp, mn 6 (2,2,2) 6 (2,2,2) 6 (2,2,2) 6 (2,2,2) 6 (2,2,2) dd = mn bc =...
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Instruction reference manual 73 description • ld eir,a: loads the external interrupt register, eir, with the data in a. The eir is used to specify the most significant byte (msb) of the external interrupt address. The value loaded in the eir is concatenated with the appropriate external interrupt ad...
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74 rabbit 2000/3000 microprocessor description • ld hl,(mn): loads l with the data whose address is mn and loads the h with the data whose address is mn plus 1. • ld hl,(hl+d): loads l with the data whose address is the data in hl plus a displacement d. Then loads h with the data whose address is th...
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Instruction reference manual 75 description loads l with the data whose address is the data in sp plus a displacement d. Then loads h with the data whose address is the data in sp plus a displacement d plus 1. Ld hl,(sp+ n ) opcode instruction clocks operation c4 n ld hl,(sp+ n ) 9 (2,2,1,2,2) l = (...
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76 rabbit 2000/3000 microprocessor description • ld hl,ix: loads hl with the data in ix. • ld hl,iy: loads hl with the data in iy. Ld hl,ix ld hl,iy opcode instruction clocks operation dd 7c ld hl,ix 4 (2,2) hl = ix fd 7c ld hl,iy 4 (2,2) hl = iy flags altd i/o s z l/v c f r sp s d - - - - •.
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Instruction reference manual 77 description loads the low order byte of ix with the data whose address is mn. Then loads the high order byte of ix with the data whose address is mn plus 1. Ld ix,( mn ) opcode instruction clocks operation dd 2a n m ld ix,( mn ) 13* ix (low) = ( mn ); ix (high) = ( mn...
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78 rabbit 2000/3000 microprocessor description loads the low order byte of ix with the data whose address is the data in the stack pointer, sp, plus a dis- placement n. Then loads the high order byte of ix with the data whose address is the data in the stack pointer register plus a displacement n pl...
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Instruction reference manual 79 description • ld ix,hl: loads ix with the data in hl. • ld ix,mn: loads ix with the 16-bit constant mn. • ld iy,hl: loads iy with the data in hl. • ld ix,mn: loads iy with the 16-bit constant mn. Ld ix,hl ld ix, mn ld iy,hl ld iy, mn opcode instruction clocks operatio...
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80 rabbit 2000/3000 microprocessor description loads the low order byte of iy with the data at the address mn and loads the high order byte of iy with the data at the address mn+1. Ld iy,( mn ) opcode instruction clocks operation fd 2a n m ld iy,( mn ) 13* iy (low) = ( mn ); iy (high) = ( mn + 1) *c...
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Instruction reference manual 81 description loads the low order byte of iy with the data whose address is the data in the stack pointer register sp plus a displacement n. Then loads the high order byte of iy with the data whose address is the data in the stack pointer register plus a displacement n ...
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82 rabbit 2000/3000 microprocessor description loads r (any of the registers a, b, c, d, e, h, or l) with the data whose address is: • the data in hl, or • the sum of the data in ix and a displacement d, or • the sum of the data in iy and a displacement d. Ld r ,(hl) ld r ,(ix+ d ) ld r ,(iy+ d ) op...
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Instruction reference manual 83 description loads r (any of the registers a, b, c, d, e, h, or l) with the 8-bit constant n. Ld r , n opcode instruction clocks operation —— 3e n 06 n 0e n 16 n 1e n 26 n 2e n ld r , n ld a, n ld b, n ld c, n ld d, n ld e, n ld h, n ld l, n 4 (2,2) 4 (2,2) 4 (2,2) 4 (...
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84 rabbit 2000/3000 microprocessor description loads r (any of the registers a, b, c, d, e, h, or l) with the data in g (any of the registers a, b, c, d, e, h, or l). Ld r , g opcode instruction clocks operation r,g a b c d e h l ld r , g 2 r = g a 7f 78 79 7a 7b 7c 7d b 47 40 41 42 43 44 45 c 4f 48...
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Instruction reference manual 85 description loads sp with the data in (a) hl, (b) the data in ix, or (c) the data in iy. These are privileged instructions. Ld sp,hl ld sp,ix ld sp,iy opcode instruction clocks operation f9 ld sp,hl 2 sp = hl dd f9 ld sp,ix 4 (2,2) sp = ix fd f9 ld sp,iy 4 (2,2) sp = ...
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86 rabbit 2000/3000 microprocessor description loads xpc with the data in a. This instruction is privileged. Ld xpc,a opcode instruction clocks operation ed 67 ld xpc,a 4 (2,2) xpc = a flags altd i/o s z l/v c f r sp s d - - - -.
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Instruction reference manual 87 description • ldd: loads the memory location whose address is in de with the data at the address in hl. Then it decrements the data in bc, de, and hl. • lddr: while the data in bc does not equal 0 then the memory location whose address is in de is loaded with the data...
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Rabbit 3000a instruction 88 rabbit 2000/3000 microprocessor description • lddsr : while the data in bc does not equal 0, the memory location whose address is in de is loaded with the data at the address in hl. The data in bc and hl (but not de) is then decre- mented. This instruction then repeats un...
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Instruction reference manual 89 description these instructions are used to access 20-bit addresses. In all cases, the four most significant bits of the 20-bit address (bits 19 through 16) are defined as the four least significant bits of a (bits 3 though 0). The ldp instructions bypass the mmu’s add...
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90 rabbit 2000/3000 microprocessor description these instructions are used to access 20-bit addresses. In all cases, the four most significant bits of the 20-bit address (bits 19 through 16) are defined as the four least significant bits of a (bits 3 though 0). The ldp instructions bypass the mmu’s ...
Page 95
Instruction reference manual 91 description these instructions are used to access 20-bit addresses. In all cases, the four most significant bits of the 20-bit address (bits 19 through 16) are defined as the four least significant bits of a (bits 3 though 0). The ldp instructions bypass the mmu’s add...
Page 96
92 rabbit 2000/3000 microprocessor description these instructions are used to access 20-bit addresses. In all cases, the four most significant bits of the 20-bit address (bits 19 through 16) are defined as the four least significant bits of a (bits 3 though 0). The ldp instructions bypass the mmu’s ...
Page 97
Instruction reference manual 93 description this instruction is similar to the jp mn instruction in that it transfers program execution to the memory loca- tion specified by the 16-bit address, mn. Ljp is special in that it allows a jump to be made to a computed address in xmem. Note that the value ...
Page 98
94 rabbit 2000/3000 microprocessor description the lret transfers execution from a subroutine to the calling program by popping pc and the xpc off of the stack, in order to return from an lcall operation. First, the low order byte of pc is loaded with the data whose address is in sp. Next, the high ...
Page 99
Rabbit 3000a instruction instruction reference manual 95 description • lsdr : while the data in bc does not equal 0, the memory location whose address is in de is loaded with the data at the address in hl. The data in bc, de, and hl is then decremented. This instruction then repeats until bc equals ...
Page 100
96 rabbit 2000/3000 microprocessor description a signed multiplication operation is performed on the contents of the 16-bit binary integers contained in the bc and de registers. The signed 32-bit result is placed in hl (bits 31 through 16) and bc (bits 15 through 0) registers. Examples: ld bc, 0ffff...
Page 101
Instruction reference manual 97 description subtracts the value of the data in a from zero and stores the result in a. Neg opcode instruction clocks operation ed 44 neg 4 (2,2) a = 0 - a flags altd i/o s z l/v c f r sp s d • • v • • •.
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98 rabbit 2000/3000 microprocessor description no operation is performed during this cycle. Nop opcode instruction clocks operation 00 nop 2 no operation flags altd i/o s z l/v c f r sp s d - - - -.
Page 103
Instruction reference manual 99 description performs a logical or operation between the byte in a and the byte whose address is (a) in hl, (b) the sum of the data in ix and a displacement d, or (c) the sum of the data in iy and a displacement d. The relative bits of each byte are compared (i.E., the...
Page 104
100 rabbit 2000/3000 microprocessor description performs a logical or between the data in hl and the data in de. The relative bits of each byte are compared (i.E., the bit 1 of both bytes are compared, the bit 2 of both bytes are compared, etc.) and the associated bit in the result byte is set if ei...
Page 105
Instruction reference manual 101 description • or ix,de: performs a logical or operation between the data in ix and the data in de. The result is stored in ix • or iy,de: performs a logical or operation between the data in iy and the data in de. The result is stored in iy the relative bits of each b...
Page 106
102 rabbit 2000/3000 microprocessor description • or n: performs a logical or operation between the byte in a and the 8-bit constant n. • or r: performs a logical or operation between the byte in a and the byte in r (any of the reg- isters a, b, c, d, e, h, or l). The relative bits of each byte are ...
Page 107
Instruction reference manual 103 description • pop ip: loads the interrupt priority register, ip, with the data at the memory location in the stack pointer, sp, and then increments the data in sp. This is a privileged instruction. • pop ix: loads the low order byte of ix with the data at the memory ...
Page 108
Rabbit 3000a instruction instruction reference manual 104 description loads the system/user mode register su with the data at the memory location in sp, then increments the data in sp. This instruction is privileged and is implemented in the rabbit 3000a. Pop su opcode instruction clocks operation e...
Page 109
Instruction reference manual 105 description loads the low order byte of the zz (any of af, bc, de, or hl) with the data at the memory address in sp then loads the high order byte of zz with the data at the memory address immediately following the one held in sp. Sp is then incremented twice. Pop zz...
Page 110
106 rabbit 2000/3000 microprocessor description • push ip: loads the location in memory whose address is 1 less that the data held in the stack pointer, sp, with the data in the interrupt priority register ip. Then decrements sp. • push ix: loads the memory location with the address 1 less than the ...
Page 111
Rabbit 3000a instruction instruction reference manual 107 description loads the location in memory whose address is 1 less than the data held in sp with the data in the system/ user mode register (su) then decrements sp. This instruction is privileged and is implemented in the rabbit 3000a. Push su ...
Page 112
108 rabbit 2000/3000 microprocessor description loads the memory location with the address 1 less than the data in the sp with the high order byte of the data in zz (any of af, bc, de, or hl), and loads the memory location with the address two less than the data in sp with the low order byte of the ...
Page 113
Rabbit 3000a instruction instruction reference manual 109 description the rdmode instruction sets the c flag to the value of bit 0 of the system/user mode register (su). This instruction is implemented in the rabbit 3000a. Rdmode opcode instruction clocks operation ed 7f rdmode 4 (2,2) cf = su[0] fl...
Page 114
110 rabbit 2000/3000 microprocessor description resets bit b (any of the bits 0, 1, 2, 3, 4, 5, 6, or 7) of the data whose address is: • held in hl, or • the sum of the data in ix and a displacement d, or • the sum of the data in iy and a displacement d. The bit is reset by performing a logical and ...
Page 115
Instruction reference manual 111 description resets bit b (any of the bits 0, 1, 2, 3, 4, 5, 6, or 7) of the data held in r (any of the register a, b, c, d, e, h, or l). The bit is reset by performing a logical and between the selected bit and its complement. Res b , r opcode instruction clocks oper...
Page 116
112 rabbit 2000/3000 microprocessor description ret transfers execution from a subroutine to the program that called it. First it loads the low order byte of pc with the data at the memory address in sp then loads the high order byte of pc with the data at the memory address immediately following th...
Page 117
Instruction reference manual 113 description if the condition f is false, then the instruction is ignored. If the condition f is true, then the instruction loads the low order byte of pc with the data at the memory address in sp then loads the high order byte of pc with the data at the memory addres...
Page 118
114 rabbit 2000/3000 microprocessor description loads the interrupt priority register (ip) with the data whose address is in sp. Then loads the low order byte of pc with the data whose address is 1 higher than the data in sp and loads the high order byte of pc with the data whose address is two high...
Page 119
Instruction reference manual 115 description rotates to the left with the c flag the data whose address is: • the data in hl, or • the sum of the data in ix and a displacement d, or • the sum of the data in iy and a displacement d. Bits 0 through 6 move to the next highest-order bit position (bit 0 ...
Page 120
116 rabbit 2000/3000 microprocessor description rotates to the left with the c flag the contents of register de. Each bit in the register moves to the next high- est-order bit position (bit 0 moves to bit 1, etc.) while the c flag moves to bit 0 and bit 15 moves to the c flag. See figure below. Figu...
Page 121
Instruction reference manual 117 description rotates to the left with the c flag the contents of r (any of the register a, b, c, d, e, h, or l). Each bit in the register moves to the next highest-order bit position (bit 0 moves to bit 1, etc.) while the c flag moves to bit 0 and bit 7 moves to the c...
Page 122
118 rabbit 2000/3000 microprocessor description rotates to the left with the c flag the contents of a. Each bit in the register moves to the next highest-order bit position (bit 0 moves to bit 1, etc.) while the c flag moves to bit 0 and bit 7 moves to the c flag. See figure 1 on page 115. Rla opcod...
Page 123
Instruction reference manual 119 description rotates to the left the data whose address is: • the data in hl, or • the sum of the data in ix and a displacement d, or • the sum of the data in iy and a displacement d. Each bit in the register moves to the next highest-order bit position (bit 0 moves t...
Page 124
120 rabbit 2000/3000 microprocessor description rotates to the left the data in r (any of the register a, b, c, d, e, h, or l). Each bit in the register moves to the next highest-order bit position (bit 0 moves to bit 1, etc.) while bit 7 moves to both bit 0 and the c flag. See figure 3 on page 119....
Page 125
Instruction reference manual 121 description rotates to the left the data in a. Each bit in the register moves to the next highest-order bit position (bit 0 moves to bit 1, etc.) while bit 7 moves to both bit 0 and the c flag. See figure 3 on page 119. Rlca opcode instruction clocks operation 07 rlc...
Page 126
122 rabbit 2000/3000 microprocessor description rotates to the right with the c flag the data whose address is: • the data in hl, or • the sum of the data in ix and a displacement d, or • the sum of the data in iy and a displacement d. Bit 0 moves to the c flag, bits 1 through 7 move to the next low...
Page 127
Instruction reference manual 123 description rotates to the right with the c flag the data in de or hl. Bit 0 moves to the c flag, bits 1 through 15 move to the next lowest-order bit position, and the c flag moves to bit 15 (see figure below). Figure 5: the bit logic for the rr instruction. Rr de rr...
Page 128
124 rabbit 2000/3000 microprocessor description rotates to the right with the c flag the data in ix or iy. Bit 0 moves to the c flag, bits 1 through 15 move to the next lowest-order bit position, and the c flag moves to bit 15. See figure 5 on page 123. Rr ix rr iy opcode instruction clocks operatio...
Page 129
Instruction reference manual 125 description rotates to the right with the c flag the data in register r (any of the registers a, b, c, d, e, h, or l). Bit 0 moves to the c flag, bits 1 through 7 move to the next lowest-order bit position, and the c flag moves to bit 7. See figure 4 on page 122. Rr ...
Page 130
126 rabbit 2000/3000 microprocessor description rotates to the right with the c flag the data in a. Bit 0 moves to the c flag, bits 1 through 7 move to the next lowest-order bit position, and the c flag moves to bit 7. See figure 4 on page 122. Rra opcode instruction clocks operation 1f rra 2 {a,cf}...
Page 131
Instruction reference manual 127 description rotates to the right the data whose address is: • the data in hl, or • the sum of the data in ix and a displacement d, or • the sum of the data in iy and a displacement d. Each bit in the register moves to the next lowest-order bit position (bit 7 moves t...
Page 132
128 rabbit 2000/3000 microprocessor description rotates to the right the data in r (any of the registers a, b, c, d, e, h, or l). Each bit in the register moves to the next lowest-order bit position (bit 7 moves to bit 6, etc.) while bit 0 moves to both bit 7 and the c flag. See figure 6 on page 127...
Page 133
Instruction reference manual 129 description rotates to the right the data in a. Each bit in the register moves to the next lowest-order bit position (bit 7 moves to bit 6, etc.) while bit 0 moves to both bit 7 and the c flag. See figure 6 on page 127. Rrca opcode instruction clocks operation 0f rrc...
Page 134
130 rabbit 2000/3000 microprocessor description pushes the current program counter, pc, onto the stack and then resets the pc to the interrupt vector address represented by iir:v , where iir is the address of the interrupt table and v is the offset into the table. The address of the vector table can...
Page 135
Instruction reference manual 131 description subtracts the c flag and the data whose address is: • the data in hl, or • the sum of the data in ix and a displacement d, or • the sum of the data in iy and a displacement d from the data in a. The result is stored in a. These operations output an invert...
Page 136
132 rabbit 2000/3000 microprocessor description • sbc a,n: subtracts the c flag and the 8-bit constant n from the data in a. • sbc a,r: subtracts the c flag and the data in r (any of the registers a, b, c, d, e, h, or l) from the data in a. The difference is stored in a. These operations output an i...
Page 137
Instruction reference manual 133 description subtracts the c flag and the data in ss (any of bc, de, hl, or sp) from the data in hl. The difference is stored in hl. These operations output an inverted carry: • the c flag is set if a is less than the data being subtracted from it. • the c flag is cle...
Page 138
134 rabbit 2000/3000 microprocessor description sets the c flag. Scf opcode instruction clocks operation 37 scf 2 cf = 1 flags altd i/o s z l/v c f r sp s d - - - 1 •.
Page 139
Instruction reference manual 135 description sets bit b (any of the bits 0, 1, 2, 3, 4, 5, 6, or 7) of the byte whose address is • the data in hl, or • the sum of the data in ix and a displacement d, or • the sum of the data in iy and a displacement d. Set b ,(hl) set b ,(ix+ d ) set b ,(iy+ d ) opc...
Page 141
Rabbit 3000a instruction instruction reference manual 137 description the system/user mode register, su, is an 8 bit register that forms a stack of the current processor mode and the previous 3 modes. Setusr shifts the contents of su 2 bits to the left, then sets bit 1 to 0 and bit 0 to 1, signifyin...
Page 142
138 rabbit 2000/3000 microprocessor description arithmetically shifts to the left the bits of the data whose address is • the data in hl, or • the sum of the data in ix and a displacement d, or • the sum of the data in iy and a displacement d. Bits 0 through 6 are each shifted to the next highest-or...
Page 143
Instruction reference manual 139 description arithmetically shifts to the left the bits of the data in register r (any of a, b, c, d, e, h, or l). Bits 0 through 6 are each shifted to the next highest-order bit position (bit 0 moves to bit 1, etc.). Bit 7 is shifted to the c flag. Bit 0 is reset. Se...
Page 144
140 rabbit 2000/3000 microprocessor description arithmetically shifts to the right the bits in the data whose address is • the data in hl, or • the sum of the data in ix and a displacement d, or • the sum of the data in iy and a displacement d. Bits 7 through 1 are shifted to the next lowest-order b...
Page 145
Instruction reference manual 141 description arithmetically shifts to the right the bits in r (any of the registers a, b, c, d, e, h, or l). Bits 7 through 1 are shifted to the next lowest-order bit position (bit 7 is shifted to bit 6, etc.). Bit 7 is also copied to itself. Bit 0 is shifted to the c...
Page 146
142 rabbit 2000/3000 microprocessor description logically shifts to the right the bits of the data whose address is • the data in hl, or • the sum of the data in ix and a displacement d, or • the sum of the data in iy and a displacement d. Each bit is shifted to the next lowest-order bit position (b...
Page 147
Instruction reference manual 143 description logically shifts to the right the bits in r (any of the registers a, b, c, d, e, h, or l). Each bit is shifted to the next lowest-order bit position (bit 7 shifts to bit 6, etc.) bit 0 shift to the c flag. Bit 7 is reset. See figure 9 on page 142. Srl r o...
Page 148
144 rabbit 2000/3000 microprocessor description subtracts from the data in a the data whose address is • the data in hl, or • the sum of the data in ix and a displacement d, or • the sum of the data in iy and a displacement d. The result is stored in a. Sub (hl) sub (ix+ d ) sub (iy+ d ) opcode inst...
Page 149
Instruction reference manual 145 description subtracts from the data in a the 8-bit constant n. The result is stored in a. Sub n opcode instruction clocks operation d6 n sub n 4 (2,2) a = a - n flags altd i/o s z l/v c f r sp s d • • v • • •.
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146 rabbit 2000/3000 microprocessor description subtracts from the data in a the data in r (any of the registers a, b, c, d, e, h, or l). The result is stored in a. Sub r opcode instruction clocks operation —— 97 90 91 92 93 94 95 sub r sub a sub b sub c sub d sub e sub h sub l 2 2 2 2 2 2 2 2 a = a...
Page 151
Rabbit 3000a instruction instruction reference manual 147 description the sures instruction rotates the contents of the system/user mode register su 2 bits to the right, replac- ing the current processor mode with the previous mode. This instruction is privileged and only implemented for the rabbit ...
Page 152
Rabbit 3000a instruction 148 rabbit 2000/3000 microprocessor description pushes the current pc onto the stack and then resets the pc to the interrupt vector address represented by iir:0x60, where iir is the address of the interrupt table and 0x60 is the offset into the table. The address of the vect...
Page 153
Rabbit 3000a instruction instruction reference manual 149 description while the data in the bc does not equal 0, then: • the data at the address in iy is multiplied by the data in de; • the data in alternate register de’ is added to that value; • the c flag is added to that value; and • this value i...
Page 154
150 rabbit 2000/3000 microprocessor description performs an exclusive or operation between the data in a and the data whose address is: • the data in hl, or • the sum of the data in ix and a displacement d, or • the sum of the data in iy and a displacement d. The corresponding bits of each byte are ...
Page 155
Instruction reference manual 151 description performs an exclusive or operation between the byte in a and the 8-bit constant n. The corresponding bits of each byte are compared (i.E., bit 0 of both bytes are compared, the bit 1 of both bytes are compared, etc.). The associated bit in the result byte...
Page 156
152 rabbit 2000/3000 microprocessor description performs an exclusive or operation between the byte in a and r (any of the registers a, b, c, d, e, h, or l). The corresponding bits of each byte are compared (i.E., bit 0 of both bytes are compared, bit 1 of both bytes are compared, etc.). The associa...
Page 157: 6. Opcode Map
Instruction reference manual 153 6. Opcode map table 1: main page lsb sb\ 0 1 2 3 4 5 6 7 8 9 a b c d e f 0 nop ld bc,mn ld (bc),a inc bc inc b dec b ld b,n rlca ex af,af' add hl,bc ld a,(bc) dec bc inc c dec c ld c,n rrca 1 djnz e ld de,mn ld (de),a inc de inc d dec d ld d,n rla jr e add hl,de ld a...
Page 158
154 instruction reference manual table 2: ed page \lsb msb\ 0 1 2 3 4 5 6 7 8 9 a b c d e f 0 1 2 3 4 ld bc',de sbc hl,bc ld (mn),bc neg lret ipset 0 ld i,a ld bc',bc adc hl,bc ld bc,(mn) reti ipset 2 ld r,a 5 ld de',de sbc hl,de ld (mn),de ex (sp),hl ipset 1 ld a,i ld de',bc adc hl,de ld de,(mn) ip...
Page 159
Instruction reference manual 155 table 3: dd page \lsb msb\ 0 1 2 3 4 5 6 7 8 9 a b c d e f 0 add ix,bc 1 add ix,de 2 ld ix,mn ld (mn),ix inc ix add ix,ix ld ix,(mn) dec ix 3 inc (ix+d) dec (ix+d) ld (ix+d),n add ix,sp 4 ld b,(ix+d) ld c,(ix+d) 5 ld d,(ix+d) ld e,(ix+d) 6 ldp (ix),hl ldp (mn),ix ld ...
Page 160
156 instruction reference manual table 4: fd page \lsb msb\ 0 1 2 3 4 5 6 7 8 9 a b c d e f 0 add iy,bc 1 add iy,de 2 ld iy,mn ld (mn),iy inc iy add iy,iy ld iy,(mn) dec iy 3 inc (iy+d) dec (iy+d) ld (iy+d),n add ix,sp 4 ld b,(iy+d) ld c,(iy+d) 5 ld d,(iy+d) ld e,(iy+d) 6 ldp (iy),hl ldp (mn),iy ld ...
Page 161
Instruction reference manual 157 table 5: cb page sb sb\ 0 1 2 3 4 5 6 7 8 9 a b c d e f 0 rlc b rlc c rlc d rlc e rlc h rlc l rlc (hl) rlc a rrc b rrc c rrc d rrc e rrc h rrc l rrc (hl) rrc a 1 rl b rl c rl d rl e rl h rl l rl (hl) rl a rr b rr c rr d rr e rr h rr l rr (hl) rr a 2 sla b sla c sla d...
Page 162
158 instruction reference manual table 6: dd-cb page b b\ 0 1 2 3 4 5 6 7 8 9 a b c d e f rlc (ix+d) rrc (ix+d) rl (ix+d) rr (ix+d) sla (ix+d) sra (ix+d) srl (ix+d) bit 0,(ix+d) bit 1,(ix+d) bit 2,(ix+d) bit 3,(ix+d) bit 4,(ix+d) bit 5,(ix+d) bit 6,(ix+d) bit 7,(ix+d) res 0,(ix+d) res 1,(ix+d) res 2...
Page 163
Instruction reference manual 159 table 7: fd-cb page b b\ 0 1 2 3 4 5 6 7 8 9 a b c d e f rlc (iy+d) rrc (iy+d) rl (iy+d) rr (iy+d) sla (iy+d) sra (iy+d) srl (iy+d) bit 0,(iy+d) bit 1,(iy+d) bit 2,(iy+d) bit 3,(iy+d) bit 4,(iy+d) bit 5,(iy+d) bit 6,(iy+d) bit 7,(iy+d) res 0,(iy+d) res 1,(iy+d) res 2...
Page 164
160 instruction reference manual.
Page 165: 7. Quick Reference Table
Instruction reference manual 161 7. Quick reference table key • instruction : the mnemonic syntax of the instruction. • opcode : the binary bytes that represent the instruction. • clock cycles : the number of clock cycles that the instruction takes to complete. The numbers in parenthesis are a break...
Page 166
162 rabbit 2000/3000 microprocessor and ix,de 11011101 11011100 4 (2,2) f * * l 0 ix = ix & de n and iy,de 11111101 11011100 4 (2,2) f * * l 0 iy = iy & de n and n 11100110 ----n--- 4 (2,2) fr * * l 0 a = a & n and r 10100-r- 2 fr * * l 0 a = a & r bit b,(hl) 11001011 01-b-110 7 (2,2,1,2) f s - * - ...
Page 167
Instruction reference manual 163 ipset 2 11101101 01001110 4 (2,2) - - - - ip = {ip[5:0], 10} np ipset 3 11101101 01011110 4 (2,2) - - - - ip = {ip[5:0], 11} np ipres 11101101 01011101 4 (2,2) - - - - ip = {ip[1:0], ip[7:2]} np jp (hl) 11101001 4 (2,2) - - - - pc = hl jp (ix) 11011101 11101001 6 (2,...
Page 168
164 rabbit 2000/3000 microprocessor ld hl,(sp+n) 11000100 ----n--- 9 (2,2,1,2,2) r - - - - l = (sp+n); h = (sp+n+1) n ld hl,ix 11011101 01111100 4 (2,2) r - - - - hl = ix n ld hl,iy 11111101 01111100 4 (2,2) r - - - - hl = iy n ld ix,(mn) 11011101 00101010 ----n--- ----m--- 13 (2,2,2,2,1,2,2) s - - ...
Page 169
Instruction reference manual 165 ldp iy,(mn) 11111101 01101101 ----n--- ----m--- 13 (2,2,2,2,1,2,2) - - - - iyl = (mn); iyh = (mn+1). (addr[19:16] = a[3:0]) n ljp x,mn 11000111 ----n--- ----m--- ---x---- 10 (2,2,2,2,2) - - - - xpc = x; pc = mn n lret 11101101 01000101 13 (2,2,1,2,2,2,2) - - - - pcl ...
Page 170
166 rabbit 2000/3000 microprocessor rlc (ix+d) 11011101 11001011 ----d--- 00000110 13 (2,2,2,2,2,3) f b * * l * (ix+d) = {(ix+d)[6,0],(ix+d)[7]}; cy = (ix+d)[7] rlc (iy+d) 11111101 11001011 ----d--- 00000110 13 (2,2,2,2,2,3) f b * * l * (iy+d) = {(iy+d)[6,0],(iy+d)[7]}; cy = (iy+d)[7] rlc r 11001011...
Page 171
Instruction reference manual 167 sub (hl) 10010110 5 (2,1,2) fr s * * v * a = a - (hl) sub (ix+d) 11011101 10010110 ----d--- 9 ( 2,2,2,1,2) fr s * * v * a = a - (ix+d) sub (iy+d) 11111101 10010110 ----d--- 9 ( 2,2,2,1,2) fr s * * v * a = a - (iy+d) sub n 11010110 ----n--- 4 (2,2) fr * * v * a = a - ...
Page 172
168 rabbit 2000/3000 microprocessor.
Page 173
Instruction reference 169 rabbit 2000/3000 microprocessor instruction reference manual part number 019–0098 f • 040114 • printed in u.S.A. ©2001 rabbit semiconductor • all rights reserved. Rabbit semiconductor reserves the right to make changes and improvements to its products without providing noti...
Page 174
170 rabbit 2000/3000 microprocessor.