Paul Koning wrote:
> Suppose you had schematics of, say, a KA-10. You could turn those
> gates into VHDL or Verilog, and that should deliver an exact replica
> of the original machine, bug for bug compatible. That assumes the
> timing quirks are manageable
The mapping from asynchronous pulses, d
CAREY SCHUG wrote:
> What I wish somebody would create is an S-100 card (probably with a
> raspberry pie daughter running simulation for future upgradeability)
> that, initially emulates a complete Byte-8 or Imsai computer including
> memory and disk images on sdc cards, 24x40 display on an HDMI di
our 1620 model 2 still did multiplication by table lookup.
--Carey
> On 02/27/2024 9:53 PM CST Chuck Guzis via cctalk
> wrote:
>
>
> On 2/27/24 18:34, CAREY SCHUG via cctalk wrote:
>
> > And the 1620 does addition and multiplication by table lookup.
>
> That was only the CADET; the Model I
On 2/27/24 18:34, CAREY SCHUG via cctalk wrote:
> And the 1620 does addition and multiplication by table lookup.
That was only the CADET; the Model II had the math hardcoded. There was
an octal arithmetic option for the Model II, so it could do binary math
of a sort. Spent lots of fun hours on
On 2/27/24 20:34, CAREY SCHUG via cctalk wrote:
Again, even if somebody offered me a complete IBM model 30 with disk and
tape drives, I could not afford the shipping. would
A 360/30 could be a real problem. It used air bags to push
the microcode cards against the bit line boards. Those air
I'd say the real cost is the second or third system to get spare parts.
that is why I want to replace the WD chip. the microprocessor talks to it
at bus speed. the os knows it has to wait, though some waits are for the
wd chip to say it is done. a SIMPLE mod to the legacy OS can eliminate
thos
On 2024-02-27 3:09 p.m., Paul Koning via cctalk wrote:
On Feb 27, 2024, at 4:49 PM, CAREY SCHUG via cctalk
wrote:
Religion warning: I was a mainframer. Since at any practical budget, they can
only be emulated,
Dumpster diving is a 0 dollar budget.
People could afford the APPLE II, 80
On 2/27/24 14:09, Paul Koning via cctalk wrote:
> Suppose you had schematics of, say, a KA-10. You could turn those gates into
> VHDL or Verilog, and that should deliver an exact replica of the original
> machine, bug for bug compatible. That assumes the timing quirks are
> manageable, which
> On Feb 27, 2024, at 4:49 PM, CAREY SCHUG via cctalk
> wrote:
>
> Religion warning: I was a mainframer. Since at any practical budget, they
> can only be emulated,
Depends on your definition of emulated. Is an FPGA version merely an
"emulation"? You might say yes if it's a functional
