- Apr 24, 2015
I'm... Not sure actually! All I have is the mainboard, a piece I've had since my late childhood, before I kept any records or marked parts as to what they came from. (still not great at that, to be honest)Interesting... what Televideo terminal is that? Did it have MS-DOS support?
Anyhow, a more useful answer is- These are the markings: TELEVIDEO SYSTEMS INC., 965 P/N 132970-00 REV. G-H-G (not sure on the H there, badly faded paper label)
Further markings: Barcode label- M965X10901157CG and Silkscreen: X715A448-2 (no other pertinent marking as far as I can tell)
List of socketed chips: U16 - SILICON LOGIC 271582-00 (c) 1105A9006 (PLCC-84); U21 - MOSEL MS6264L-10PC 9031AN1 (DIP-28);
U24/25 - ST MK48H64LN-70 99012 (DIP-28); U14 - S SCN2672TC5N40 KHT7316 9018KA (DIP-40); U10 - CMDu G65SC816P-5 8836 (DIP-40);
U9 - ST M27512-2F1 89021 (DIP-28); U8 - ST M27256-2F1 89019EN (DIP-28); U7 - HYUNDAI HY6264LP-10 9024D KOREA (DIP-28);
U6/5 - UM6551A 9021S (DIP-28); U4/3 - MOTOROLA MC1489AP RQFV9020 (DIP-14); U2/1 - S MC1488N FHK6778/FHN3269 9035VJ (DIP-14).
Non-socketed chips are mostly 74-logic, aside from IC 401 - TDA1170N 89023 (DIP-14-ISH?), U101 - TI TL494CN 9018BR PORTUGAL (DIP-16), and U201 - CQY 80N 006 A TFK4 0883 (DIP-6, makers-mark: VDE, likely an opto-coupler)
Has two DB25 ports on the back, labelled MAIN and AUX, and an RJ11 jack for the keyboard.
CRT was built-in and there were no external adjustments for it, aside from a slider for something. (brightness or contrast, maybe?)
Sadly, unless I sent it in for decapping and possible repair, the U9 ROM is unrecoverable.
I recall, as a child, playing with the board and trying to get it to function while hooked up to its CRT sans the case.
I'd removed (some/all of?) the socketed chips and I reinstalled that ROM upside-down because the label is printed at the opposite end to the other one.
When I turned it on the clear window lit up like a light-bulb! I turned it off, reversed it, and tried again, but it was toast.
Don't recall if anything displayed on the screen at all. I've since lost all but the board to improper storage/breakage.
Anyhow, please let me know if you do get a positive identification on it! Might have a (small) chance at resurrecting it then.