New subject: Reset password on Bianca/ Brick M

12 Mar 2003

Hi Bill
 It is a complete SIM4-01 setup with the programmer card.
see:

http://www.vintage-computer.com/images/digibarn/digibarn4004.jpg

 It isn't clear in the picture but under the newer MCS4 manuals
is one of the older ones with a complete descrition of the SIM4
in it.
 You didn't put the programs in RAM, it still require one
to blow 1702's that you'd replace those on the SIM4 board
to test out your programs. You need to remember this
is a Harvard architecture type processor. The motherboard/box
has some dip connectors, LED lights and switches that can be used
for I/O to simulate your application with.
 I still use it every now and then to blow 1702A for various
things.
Dwight

...
 From: "Bill Kotaska"
&lt;bkotaska(a)earthlink.net&gt;

----- Original Message -----
From: "Dwight K. Elvey" &lt;dwightk.elvey(a)amd.com&gt;
To: &lt;cctalk(a)classiccmp.org&gt;
Sent: Monday, March 10, 2003 11:26 AM
Subject: Intel 4004 was: New To List and PDP8 Question

  I have a SIM4 but mine doesn't have the nice LCD read out that
 yours has. I wrote an assembler as well. Mine is single pass
 but I can still do forward references by having the lables self
 resolve them selves as their location is assigned. I also have
 a simualtor that I wrote. It is built around the SIM4 board.
 Wow Dwight, a real SIM4. Is it the -01 or -02. I think the main difference
was the number of PROMs it would hold. Do you also have the box with the
mating connectors? I think it was used to interface the SIM4 to another
board for programming 1702s. Oh what THESE would fetch on eBay. All joking
aside, I hope you wouldn't do that. I know I couldn't.

 Most 4004 systems have a lot of hardware dependencies since
 not all used things like the 4002's for RAMs or the normal
 I/O methods.
 I toyed with the idea of making a SIM4 clone but I would have had to do too
many part substitutions. It wouldn't have been much of a clone. And I still
wouldn't have been able to execute out of RAM.
Right?

Bill 