Sorry, Stupid question time
Posted: Mon Jan 22, 2018 10:38 pm
Hi All,
I've just been watching a youtube video https://www.youtube.com/watch?v=14eL_oWhhXo about using a 32KB * 8bit SRAM chip to get an internal 16KB of memory.
Looking at the datasheets for the 58256 and 62256 together with the ZX81 schematic I wondered if it was possible to also raise PIN2 of the memory chip and connect that to the A12 line from the Z80, as the other four address pins have been raised in the video.
Might this work? Or am I particularly stupid this evening.
Whopper
I've just been watching a youtube video https://www.youtube.com/watch?v=14eL_oWhhXo about using a 32KB * 8bit SRAM chip to get an internal 16KB of memory.
Looking at the datasheets for the 58256 and 62256 together with the ZX81 schematic I wondered if it was possible to also raise PIN2 of the memory chip and connect that to the A12 line from the Z80, as the other four address pins have been raised in the video.
Might this work? Or am I particularly stupid this evening.
Whopper