Help identify ISA cards

[andy]

I have four ISA cards that I need help identifying. Three of them are RAM expansion cards, and one if a video card.

One RAM board is labeled Teletek ASSY A1850, part number 0601-0124, and is full of 2 MB of 256k DIP RAM chips. The other one is ASSY A1950, part number 0601-0125, and has 8 30 pin SIMM sockets.



The third RAM board is labeled "Tecmar Inc 1984" "AT Maestro BD 931063", and currently has 128K of RAM installed. It also has what I assume are serial and parallel ports.



Finally, I have a video card. It's detected as CGA in my XT 286. It has 256k of RAM, and 8 DIP switches. I read the ROM, and it starts out "IBM EGA & CGA COMPATIBLE (C)COPYRIGHT NSI 1985 10/31/85". I know that NSI made EGA video cards, but I haven't been able to find anything on this model.


Can anyone help with documentation, or jumper settings for any of these boards?

 

[Chuck(G)]

It's "Tecmar" and described here. The video card is an EGA card--the two RCA connectors (that do nothing on your card) are a giveaway. Don't know anything about the Teletek memory.

 

[dhau]

First card looks like an early EGA card with only 64KB of video ram onboard from NEC. I have a similar but smaller EGA card in my NEC APC IV from 1986.
https://www.vcfed.org/forum/forum/ge...579#post977579

 

[andy]

It's "Tecmar" and described here. The video card is an EGA card--the two RCA connectors (that do nothing on your card) are a giveaway. Don't know anything about the Teletek memory.

Please excuse the typo on Tecmar, but thanks for the link. That's exactly what I was looking for.

 

[andy]

First card looks like an early EGA card with only 64KB of video ram onboard from NEC. I have a similar but smaller EGA card in my NEC APC IV from 1986.
https://www.vcfed.org/forum/forum/ge...579#post977579

Thanks, that was helpful. It would still be nice to know the full switch settings, but configuring the switches the way they are in that other thread has changed it to high resolution EGA mode instead of CGA mode. It does in fact have 256K of RAM (the chips are 64k x 4). The PCB was probably designed to take 16k x 4 chips as an option. The ASIC is the same as the card in the pictures.

 

[dhau]

Thanks, that was helpful. It would still be nice to know the full switch settings, but configuring the switches the way they are in that other thread has changed it to high resolution EGA mode instead of CGA mode. It does in fact have 256K of RAM (the chips are 64k x 4). The PCB was probably designed to take 16k x 4 chips as an option. The ASIC is the same as the card in the pictures.

My pleasure, it looks like the card is NSI Logic Smart EGA. There are some links about it's successor, NSI Logic Smart EGA Plus:

http://old.vgamuseum.info/home/661-nsi-logic-evc-315s.html

http://old.vgamuseum.info/images/stories/doc/misc/nsiega.pdf

http://books.google.cz/books?id=zjw...6AEwAQ#v=onepage&q=NSI Smart EGA Plus&f=false

https://techmonitor.ai/techonology/nsi_logic_offers_extended_ega_card_for_ps2_software