11 Feb
2007
11 Feb
'07
7:18 p.m.
Had a good day at the Mansfield Hamfest today. I now have some LCD
monitors that I need to scope out power for (+5 @ 2A, +12 @ 1A), a
nixie-tube panel DVM, and a couple of IBM modem frontpanels.
From googling the IBM model number (7861-015), they
appear to be from
a 9600bps 4-wire leased-line modem. I picked them up because
they
have a 20-key keypad with double-shot hex letters (0-9, A-F) that look
really handy for attaching to an 1802 or similar, and a 1x16 char
"british flag" VFD. What I'd really like is to get my hands on a
schematic to skip the step of reverse-engineering the VFD drivers.
Does anyone on the list have any docs on IBM modems at that level of detail?
Thanks for any pointers,
-ethan