[NTLK] Fact Check
Jim Lee
jimlee at centurytel.net
Fri Jan 22 16:59:06 EST 2010
My first computer was one I built from scratch based on an article in
Radio Electronics magazine (circa 1977). It had an RCA CDP-1802
processor (similar in architecture to the PDP-11's of the day), and a
whopping 256 BYTES of RAM! I soon upgraded the RAM to 1K, and I could
then program a graphic of the Starship Enterprise that scrolled across
my TV screen. I had to hack into the video circuitry of the tube-
based TV to hook it up, but it was a sweet setup when it was done!
Every byte of the program was toggled into the RAM via discrete front
panel switches. I hand-assembled the code on paper first.
To steer this woefully off-topic post back in the right direction, the
whole thing was about the size of 3 Newtons stacked vertically...
-Jim
On Jan 22, 2010, at 1:39 PM, Goodwin, Greg P. wrote:
> From: Frank Gruendel
>
>> (my first modem was a 1200bd modem built into my 80x24 column "CGA"
>> laptop--a
>> Tandy, with a 10 meg hard drive)
>
> Hey, MY second computer did not even HAVE a hard drive. It was a
> 2MHz Z80 computer with a whoopin'
> 64 kiloByte of RAM. ...
>
> Boy, must I be old...
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