ICD Ramblo XL Installation And Operation Manual - page 16

Chapter 4-Installation for 1200XL 

Memory Decoder IC we are replacing-U10 

Also labeled  74LS158. 

This is a 16 pin IC. With the 1200XL, U10 is to the right and slightly 

above ANTIC. 

RAM Chips-labeled U1-U9 (excluding U7) on the 1200 XL and in  

the lower left hand corner of the PCB. These should all be installed   

in sockets. 

Check Jumpers and Jumper Block Settings on the RAMBO XL  

Board 

See the following table (table 2) to determine which jumpers you  

need to run and how to set the jumper blocks for your computer.  

(Most 1200XLs have the C012296 ANTIC and will use the first  

setting.) 

JP1-JP3 are the jumper plugs on your RAMBO XL board. For  

JP1-JP3, the '0' indicates that the jumper position should not  

match the bar on the silk screen legend. The '-' indicates that the   

jumper should match that of the silk screen legend. The '-' is the  

most common setting for the 1200XL. (See Figure 3.) 

For A-D, the 'Y' indicates that this jumper needs to be connected to  

your computer and the 'N' indicates that no connection is  

necessary. 

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