05-05-2022, 12:46 AM
First pic, the 2 extra rom positions were for some future options. I know of no current use.
Second pic, it was cheaper to use 4 x 8kb 6264 RAM chips to give 32kb than the original board layout that used 16 x 2kb RAM chips.
Second pic, it was cheaper to use 4 x 8kb 6264 RAM chips to give 32kb than the original board layout that used 16 x 2kb RAM chips.
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ChickenMan
ChickenMan