Atari 1090 XL Expansion Cards
 

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Atari 1090 Z-80 CP/M Board

(Atari 1066)

Z80 CP/M Board - Front

 

Atari 1090 CP/M Module.   (This was to be the 1090 version of the "Sweet-Pea" which was an external box called the Atari 1060 CP/M Add-on.   The 1090 CP/M card is the Atari 1066.)   This expansion card would have allowed an Atari computer to run software written for Zilog Z-80 processor CP/M (Control Program for Microcomputers) computers.   The card contains a Zilog Z-80 processor and support circuitry.   However this board has not been able to be tested since no software drivers have yet been found.   The card does contain an expansion header, it is unknown whether or not this header may have been used for a daughter card with RAM or perhaps a floppy disk controller board or some other feature.