It seems there is a good candidate here for that: https://uk.pi-supply.com/products/ryanteck-rtk-gpio-pc-gpio-interface?lang=es This is a small board that adds 28 pins of gpio to any standard PC, controlled with the USB port. I counted 28 pins for DMA'ing into a Commodore 64. I'm surely wrong and there are more needed... or maybe I'm right and this is a way to do it. I'm following the links in the bottom of that page to read about the board. 18 de junio de 2022 21:04, "smf" <smf_at_null.net> escribió: > I suspect you'd need some kind of programmable logic (like a cpld or > fpga) to cope with the timing requirements, plus some kind of > microcontroller with built in usb/ethernet/wifi etc to talk to act as a > bridge between the pc and the cpld. > > On 18/06/2022 16:48, tokafondo_at_tokafondo.name wrote: > >> For proper DMA, there are at least 24 lines for the address and data >> buses, and there are also the lines of PHI2, /DMA, RW and BA lines >> that need to be taken care of, AFAIK. >> What device can be used to control 28 bits from a PC?Received on 2022-06-19 00:01:20
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