[Coco] USR quad modems... (ontopic - really!)
zmerch-coco at 30below.com
Wed Aug 16 17:36:02 EDT 2006
So, I have an older USR Total Control system with quad V.34 modems on each
card, and prolly 12 cards in the system.
I was curious as to just what makes this sucker tick, so I pulled a card &
started looking at chip numbers...
Each "modem section" has:
a Intel 80C186 (same chip as in the Tandy 2000) - except they're rated for
a TI/USR DSP chip, which is prolly useless outside of the intended use
2 each 32Kx8 static ram chips,
4 each 128Kx8 static ram chips
and lots of other 8/16-bit 74-series buffer chips & whanot.
So, *if* I can get a Dynamic-RAM -> Static RAM converter board designed for
the CoCo, I could upgrade 4 CoCo3s to 512K with each modem board.
Anyone have any use for some 20Mhz 80C186's?
Roger "Merch" Merchberger
Roger "Merch" Merchberger | "Profile, don't speculate."
SysAdmin, Iceberg Computers | Daniel J. Bernstein
zmerch at 30below.com |
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