Altair 8800 Help (Another Follow-Up)
cclist at sydex.com
Fri Oct 26 13:10:07 CDT 2007
On 26 Oct 2007 at 10:33, Rick Bensene wrote:
> An update on the Altair...
Congratulations on getting the thing running! I'm surprised that the
old capacitors in the power supply haven't dried out yet--but I
suspect that you have a heavier-duty PSU in your box--the original
didn't have much spare capacity.
Yup, the 4K DRAM boards were miserable--they had an annoying tendency
to change contents when "Reset" was pressed. Still, if you feel the
urge to try them, I have some Fujitsu clones of the original 4K TI
chips that you can have that might hold onto data better.
On the other hand, the boards that used 2102 or even 21L02 SRAMs were
pretty power hungry.
I never used MITS-DOS; I became disgusted with the lousy production
quality of the 8800 and moved to an IMSAI box for a time, then to an
Integrand "no blinky lights, not even a power indicator" box and ran
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