Reimaged Rambo XL 256k Memory Upgrade


6 in stock (can be backordered)

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ICD provided several quality products to the Atari community over the years.  This particular board is a version of Claus Buchholz’s 130XE compatible upgrade for the Atari 800XL.  ICD’s contribution is that it is compatible with both the Atari 800XL and 1200XL computers.  It contains circuitry to add upto 192k-bytes of additional memory to a stock Atari 800XL or 1200XL.  DOES NOT INCLUDE THE NECESSARY 8 256K RAM CHIPS.  BOARD AND CABLE ONLY

My clone of the board is as faithful as I can make it.  That means it is subject to the same limitations as the original.

Additional information

Weight 2 oz
Dimensions 2.25 × 1.5 × 1 in

Fits 800XL/1200XL only


Board populated except for 74LS158 used from motherboard wiring cable

Additional parts

Not supplied (8) 41256 256k-bit dynamic Ram (200ns or faster) chips

Install Difficulty

Need to solder five wires to PIA chip and upto four additional wires to other sites on motherboard and chips


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