3 ms·
> You can emulate a complete 68k Mac on a FPGA, but where do you attach that weird NuBus card? I just looked, and NuBus has 96 pins with clock rate of like 20
by monoideism 6y ago
> You can emulate a complete 68k Mac on a FPGA, but where do you attach that weird NuBus card?
I just looked, and NuBus has 96 pins with clock rate of like 20 MHz. There are FPGAs with > 500 GPIO that can easily handle that clock rate, and ones with over >200 GPIO that are fairly affordable. Now, I mess around with FPGAs, but I'm not an electrical engineer, and there may be other issues. But it seems doable.
Any electrical engineer and/or hardcore FPGA hacker want to chime in?
- NovemberWhiskey 6y agoIt also looks like at least 30-40 of the pins on NuBus are either grounds or power supplies, so it's not even as bad it seems.
- monocasa 6y agoYeah, those wide parallel connections were pretty much universally power/ground heavy for signal integrity reasons.