4004/8008 (was Re: Forgotten PC History)

dwight elvey dkelvey at hotmail.com
Tue Aug 12 00:48:57 CDT 2008

> From: ethan.dicks at usap.gov
---snip---> > Thanks for the more detailed info,> Hi Ethan
 I should mention I do have a working SIM4-1 and programmer card,
as described in the manual.
 I also have a hand written assembler and disassembler.
The disassembler creates nice Intel code but I wrote the
code for the assembler at a different time so they are not
compatible( no good excuse ).
 Both are written in Forth and run under F-PC ( a easy to get
freeware version ). You don't need to know much Forth to
use either.
 I also have an emulator, also written in Forth. It executes code
but I never finished connecting I/O functions. It is still useful
but one needs to manually load input values and then execute
until the next input. I'd intended to have it read input from a file
and use the cycle count to determine each I/O data change.
 I just got side tracked and never finished it. It does still
read out instructions as it runs and allows breakpoints and
single stepping.
 If you think you'd be interested, I can dig it up.
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