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The 64's serial (IEC) port uses device numbering to support daisy-chained disk drives, printers and other devices. https://www.c64-wiki.com/wiki/Device_number
by linker3000 3y ago
The 64's serial (IEC) port uses device numbering to support daisy-chained disk drives, printers and other devices.
https://www.c64-wiki.com/wiki/Device_number https://www.c64-wiki.com/wiki/Device_number.
Fujinet on the C64 supports modem comms - the implementation is based on the Meatloaf project:
https://meatloaf.cc/ https://meatloaf.cc/
- TMWNN 3y agoThanks for clarifying to rbanffy about emulating the printer; you beat me to it. I watched the Meatloaf videos; thank you. Does this mean that FujiNet hardware for the C64 will connect to both the serial and user ports? If so that would solve both the backward compatibility and throughput issues, at the cost of more hardware (but understandably so, given the C64's hardware). PS - What is the upper throughput limit on the Commodore serial bus? I know it's a serial version of IEEE-488, but I assumed that the upper limit is lower than what is required for modem access. But now that I think about it, the throughput for disk access (even if brokenly slow by default) must be much higher than that of contemporary modems, right? To put another way, is there anything—whether throughput, or signaling/traffic—inherently preventing modems on the serial port à la SIO?
- ddingus 3y agoI thought this was about the VIC badlines inhibiting faster serial comms due to a bug in the serial chip. It's fuzzy, but some things in the C64 are bit banged, and the badlines necessary for video DMA make that difficult at higher speeds.