[TUHS] 68k prototypes & microcode

[Henry Bent]

On Thu, Feb 4, 2021, 17:40 Adam Thornton <athornton at gmail.com> wrote:

> I'm probably Stockholm Syndrommed about 6502.  It's what I grew up on, and
> I still like it a great deal.  Admittedly register-starved (well, unless
> you consider the zero page a whole page of registers), but...simple, easy
> to fit in your head, kinda wonderful.
>
> I'd love a 64-bit 6502-alike (but I'd probably give it more than three
> registers).  I mean given how little silicon (or how few FPGA gates) a
> reasonable version of that would take, might as well include 65C02 and
> 65816 cores in there too with some sort of mode-switching instruction.
> Wouldn't a 6502ish with 64-bit wordsize and a 64-bit address bus be fun?
> Throw in an onboard MMU and FPU too, I suppose, and then you could have a
> real system on it.
>
>
Sounds like a perfect project for an FPGA.  If there's already a 6502
implementation out there, converting to 64 bit should be fairly easy.

-Henry
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