Hi! Baltissen, GJPAA (Ruud) wrote on 10.01.2024 14:44: > Regarding formatting a disk, the software, that is executed by the 2nd 6502 (FDC controller), can be found in the ROM of the first 6502, the bus controller. The 1541 uses the same principal so you could start with studying that one first. Main advantage: everything in one ROM. Well, I guess then my specific question is: how do I execute code on the second CPU? When I send a "Memory-execute" or "user" command to the drive, it is being executed on the first CPU, correct? With the 1541, when everything is run on the same CPU, you can surely execute drive-interfacing code this way, but how to do it when there are two CPUs involved and only the DOS-CPU is user-facing? Regards, Michau.Received on 2024-01-11 13:00:03
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