I only got to spend Friday morning at the Hamvention, but I think my biggest
find was an RCA VIP-3301 terminal. I remember seeing ads for this 20+ years
ago. The seller started off asking $50, but I talked him down to $10. eBay
eat your heart out!
Inside, the 1800-series chips are the following - 1802, 1854, 1869, 1870,
several 1852 I/O ports, a couple of 1856 latches?, one 1867, and one 1823.
The RAM appears to be five 2114 chips, the rest is glue logic and some level
converter hardware, including optoisolators for the switch-selectable 20mA
mode.
The configuration jumpers read as the following:
UC U & LC
E/O M/S
E/M O/S
2SB 1SB
F-DPX H-DPX
CTRL OFF
40/24 20/12
CL EIA
LOCAL LINE
110
300
1200
4800
9600
19.2K
And the backplate has the following - volume pot, speaker on/off switch, RCA
video-out jack, unmarked 5-pin DIN, DB25F serial connector, 5-pin DIN marked
"POWER" and a power switch.
There is a LM340T bolted to the case inside, so presumably, it takes in
something around 7-9VDC and regulates it down to +5VDC, but since the design
is 100% CMOS and Linear circuits, it doesn't _have_ to be exactly that.
So... beyond the obvious things I've mentioned, does anyone have any
interesting
comments about this beastie? At this point, I have no idea if the membrane
keyboard is any good. I have yet to power it on.
Thanks in advance,
-ethan
=====
Even though my old e-mail address is no longer going to
vanish, please note my new public address: erd_at_iname.com
The original webpage address is still going away. The
permanent home is:
http://penguincentral.com/
See
http://ohio.voyager.net/ for details.
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Received on Sun May 21 2000 - 23:08:59 BST