On 3/25/2020 9:35 AM, silverdr_at_wfmh.org.pl wrote: > https://www.wikizero.com/en/Commodore_64_peripherals > > says: > > "It was also possible, without requiring a VIC-switch, to connect two Commodore 64s to one 1541 floppy disk drive to simulate an elementary network, allowing the two computers to share data on a single disk (if the two computers made simultaneous requests, the 1541 handled one while returning an error to the other, which surprised many people who expected the 1541's less-than-stellar drive controller to crash or hang). This functionality also worked with a mixed combination of PET, VIC-20, and other selected Commodore 8-bit computers." > > Has anyone tested that? Is that a fully deterministic/reliable behaviour? > OK, I tested this. * Assuming one has done the poke or otherwise released the lines on each machine, a simultaneous request from two machines to a single drive does indeed work as stated above. * But, the requests must be simultaneous. If one waits for any amount of time between requests from 2 machines, the one returns a "file not found" error and the other one hangs. So, I don't think the above is reasonable advice. Jim -- Jim Brain brain_at_jbrain.com www.jbrain.comReceived on 2020-05-30 01:24:51
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