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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Страница 3: ...RAMBO XL Installation Operations Manual 256K Memory System for Atari 800XL and 1200XL Computers by ICD...
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