Am Donnerstag, 10. Januar 2019, 08:11:04 CET schrieb André Fachat: > Am 9. Januar 2019 12:17:17 schrieb Francesco Messineo > > <francesco.messineo@gmail.com>: > >> The major issue was actually the speed - not really of the bus but of the > >> 1541 implementation with 6522 software workarounds making the bus look > >> worse than it really was. Common thing was to add at least the parallel > >> connection to 1541, bringing it somewhat closer to the original GPIB. And > >> yes - it still allowed more than two devices and obviously not only the > >> floppy drives. > > > > Yes, that was due to a bug in the 6522 chip. > > Never having fixed the shift register bug in the VIA 6522 e.g. in a new > revision is my biggest gripe with MOS and Commodore. It would have made so > many things so much easier. > > Well, that's history. Anyone know if there is a fixed CPLD/FPGA VIA? the CMOS versions (which are still available) have the external clocking bug fixed, AFAIK -- http://hitmen.eu http://ar.pokefinder.org http://vice-emu.sourceforge.net http://magicdisk.untergrund.net Wer Ficken super findet hat noch nie was anstaendiges gegessen. <Jihad/Hitmen>Received on 2019-01-10 09:00:50
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