13 Feb
2021
13 Feb
'21
7:06 a.m.
You might find this interesting
https://twitter.com/i/status/1320767372853190659
<https://twitter.com/i/status/1320767372853190659>
It's a pi (arm) running Musashi a 68000 core, but using voltage buffers it's
plugged into the 68000 socket of an Amiga!
You can find more info on their github:
https://github.com/captain-amygdala/pistorm
<https://github.com/captain-amygdala/pistorm>
Maybe we are at the point where numerous cheap CPU's can eliminate FPGA's?
-----Original Message-----
From: Michael Parson [SMTP:mparson@bl.org]
Sent: Friday, February 05, 2021 10:43 PM
To: The Eunuchs Hysterical Society
Subject: Re: [TUHS] 68k prototypes & microcode
On 2021-02-04 16:47, Henry Bent wrote:
6502
On Thu, Feb 4, 2021, 17:40 Adam Thornton
<athornton(a)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 implementation out there, converting to 64 bit should
be fairly
easy.
There are FPGA implementations of the 6502 out there. If you've not
seen
it, check out the MiSTer[0] project, FPGA implementations of a LOT
of
computers, going back as far as the EDSAC, PDP-1, a LOT of 8, 16,
and 32
bit systems from the 70s and 80s along with gaming consoles from the
70s
and 80s.
Keeping this semi-TUHS related, one guy[1] has even implemented a
Sparc 32m[2] (I think maybe an SS10), which boots SunOS 4, 5, Linux,
NetBSD, and even the Sparc version of NeXTSTEP, but it's not part of
the
"official" MiSTer bits (yet?).
--
Michael Parson
Pflugerville, TX
KF5LGQ
[0] https://github.com/MiSTer-devel/Main_MiSTer/wiki
[1] https://temlib.org/site/
[2] https://temlib.org/pub/mister/SS/