Parasitic Engineering Altair Clock Fix Kit...

William Sudbrink wh.sudbrink at
Fri Feb 21 17:38:00 CST 2020

I have an Altair with the power supply mod and a printed copy of the power
supply instructions.  I don't think the printed instructions are original.
As a
matter of fact, I think they are probably printed from deramps's scan.  Mr.
"Saga of a System" mentions both the PS mod and the clock mod although it
does not suggest that he ever installed the clock mod.  I'd still like to
show it at
VCF East if possible.

Bill S.

-----Original Message-----
From: cctalk [mailto:cctalk-bounces at] On Behalf Of Fred Cisin
via cctalk
Sent: Thursday, February 20, 2020 8:26 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Parasitic Engineering Altair Clock Fix Kit...

On Thu, 20 Feb 2020, William Sudbrink via cctalk wrote:
> Hi,
> Does anyone happen to have the instructions for this kit?  I would really
> appreciate a scan if you do.
> Also looking for a 1975ish GE Porta-Color television (borrow, rent or buy)
> for VCF East.
> Thanks,
> Bill Sudbrink

Please let us know what you find.

Howard Fullmer created a "beefier" power supply for the Altair.  Ed 
Roberts said that people selling aftermarket peripherals were "parasites", 
so Howard named his company "Parasitic Engineering".

He later produced the "Shuffleboard" (daughterboard) set for TRS80 that 
changed the memory map to be CP/M compatible, and an adapter 
(daughterboard) to change the exp-ansion interface to support 8" single 
density.   (4th West Coast Computer Faire 1979)

He and George Morrow put out early proposals for standardizing S100.

Later, he was chief engineer for Morrow.

He is no longer at the same addresses in north Berkeley and Albany.
I heard a rumor that he had died, but I have been unable to find more 
information.  George Morrow, who would know, is also dead.

Grumpy Ol' Fred     		cisin at

More information about the cctalk mailing list