Thanks, I figured it HAD to be a typo, otherwise it would be rather ironic for it to have more than 5x as much RAM as the standard 100 could support.
On Mon, Jan 8, 2024, 12:05 Darren Clark <[email protected]> wrote: > I think the 128K or RAM is a typo and should only be 128 bytes. Looking at > page 97 (set the data to drive's memory) and page 89 (get the data from the > drive's memory), there is only enough room to request 125 bytes at a time. > > Also from my disassembly of the TPDD1 ROM and the very similar > architecture (same CPU and RAM and CPLD), there is only 128 bytes of > scratch ram. >
