3 ms·

Wild. Apparently there are many different efforts to use FPGAs to simulate old hardware: "Using FPGAs to Simulate old Game Consoles": https://jakob.engbloms.s

Wild. Apparently there are many different efforts to use FPGAs to simulate old hardware: "Using FPGAs to Simulate old Game Consoles": https://jakob.engbloms.se/archives/3026 https://jakob.engbloms.se/archives/3026 "AMSTRAD ON AN FPGA": https://hackaday.com/2017/01/06/amstrad-on-an-fpga/ https://hackaday.com/2017/01/06/amstrad-on-an-fpga/ "MISTER FPGA: THE FUTURE OF RETRO GAME EMULATION AND PRESERVATION?": https://www.racketboy.com/retro/mister-fpga-the-future-of-retro-game-emulation-and-preservation https://www.racketboy.com/retro/mister-fpga-the-future-of-re...

tyingq 5y ago
I find it interesting when someone makes foundational improvements when using an FPGA to mimic an old CPU. The NextZ80 is a good example. It's designed to run 4x the amount of instructions at the same clock rate as a real Z80. And you can clock it to 40MHz, so it's effectively a 160Mhz Z80...compare to a typical 4/8Mhz real Z80. https://opencores.org/projects/nextz80 https://opencores.org/projects/nextz80
- ComputerGuru 5y ago
  Yes, but how many programs written for the real thing have hard coded values dependent on cycle times?
  - tyingq 5y ago
    Perhaps for games on a platform like the ZX Spectrum and MSX, but I suspect most of the CP/M targeted apps wouldn't care.
    - hakfoo 5y ago
      But how many of those systems have BIOS code that uses hard-coded timing loops to talk to devices?