->>  GG>> Still have a model 100 somewhere.

->>  PR> I've got one of those, with 256MB!  And a stack of IMSAI
->>  PR> 8080's.

->>  Imsai 8080s? I did my assembly language course on those in
->>  college. Used a cross assembler from a DEC something or other.
->>  Started with the toggle switches, though.

 WC> Seen them.
 WC> Wire wrapped my first computer from a 5 page article in
 WC> Popular Electronics.
 WC> The RCA Cosmac Elf based on RCA's 1802 CPU.
 WC> Ran at a blazing speed of 1 MHz but could have been clocked
 WC> to 3.2 MHz or 6.4 if you sprang for the ceramic packaged
 WC> CPU.

 My first computer was the Super Elf. 256 bytes of memory.

->>  Never bothered to learn any more assembly than that, and the
->>  extensions to the Z80. Did a fair amount of Z80 assembly, and
->>  machine language, though. Long ago.

 WC> Being just 20 Y.O. when I built mine for a mere 90 dollars
 WC> I became stunned when I discovered RCA wanted over 800
 WC> dollars for the assembler.

 No wonder I never got that. No wonder the 1802 didn't catch on.

 WC> Mine also used a bidirectional bus both driving the LED
 WC> outputs and being driven by toggle switch inputs.
 WC> That, a RUN switch, memory protect, input DPDT and some
 WC> housekeeping chips and miniscule amount of RAM was all
 WC> there was to it

 I don't even recall what all was on the Super Elf.

BOB KLAHN bob.klahn{at}sev.org   http://home.toltbbs.com/bobklahn

... Only one vice president has ever served two terms as president.
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