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Re: My Gold Card is faster than yours! Well nope it doesn't work.

Posted: Sun May 05, 2019 12:10 am
by Nasta
Dave wrote:But... The 80P50 uses an external ROM, so if you can find those they are always fun to have.
If you can find them!
So does the 8049 but then the data on the data bus is latched and with 4 port lines are used to supply an address to the external memory. It is possible to re-create the pins in the case of IPC usage, but it's not trivial.