Den Sun, 10 Jun 2018 19:00:08 +0200 skrev Michał Pleban <lists@michau.name>: > Gerrit Heitsch wrote: > > > Another Idea would be to use an AM2130 (datasheet is available > > online) or similiar chip instead if you can find them. That's a 1k > > x 8 dualport RAM with built in arbitration. Should be perfect to > > interface 2 systems. > > That sounds like a cool chip! > > But a problem here is that the 6509 interface routines are placed in > the KERNAL. So the card should be compatible with the existing > hardware which uses 6526. The routines could be rewritten and placed > in RAM, but then the original MS-DOS will not work with the new card. Would the original disk work in an unaltered condition when the 8088 card has an 8255 instead of a 6525 on the 8088 side? -- (\_/) Copy the bunny to your mails to help (O.o) him achieve world domination. (> <) Come join the dark side. /_|_\ We have cookies.Received on 2018-06-12 18:03:02
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