View Full Version : Another CP/M question? I have an unusual expansion card. What is it?

March 9th, 2015, 10:51 AM
I suspect this is a card for monitoring the stock market or similar? It came out of an Epson QX-10 (which I don't think I want to attempt restoring). The card has it's own power supply, which is a first I have seen. It has no ID or Part number anywhere I can find. The only clue is "Commodity Quote Graphics Rev 2" marked at the bottom of the card. Note that massive 3300uf capacitor.

March 9th, 2015, 11:03 AM
What are the ports on the card? My suspicion is that the card is designed to hook up to a feed to get and display updated stock quotes. If what I have is correct, the 1980s version of CQG used a satellite receiver.

Check your disks. You may have the matching software. Not too useful anymore but was scarce at the time.

March 9th, 2015, 11:13 AM
The only port is an 8 pin DIN connector. I suspect you are right if that was a monitor port.

March 9th, 2015, 11:36 AM
No. No dates, but I noticed it does say "45 HZ Video" above the Commodity Quote Graphics. It would have to be around 1983. I can't find when the QX-10 was discontinued.

March 9th, 2015, 12:02 PM
yes, it is Toshiba. TMM2016AP-10 30338 8347NAK. 40 pin says S (in white box) 8432 SY6845EA.

March 9th, 2015, 04:10 PM
The Synergy Semi SY6845EA is a CRT controller chip. So its outputting a screen (probably through the 8-pin DIN connector).

That begs the question... where is the source of the data if the 8pin connector is a video output?

Good detective work. I opened up the QX-10 again because there was a second card installed that I thought was a general memory expansion, but was actually a commodity quote graphics memory board rev 3.