a "field guide" for older TI memory boards

[B. Degnan]

Ethan,
I wrote the post about the TI 9900 processor cards.  What are the 
dimensions of the cards, and how many pins?  I have two ram boards that may 
be similar to yours, perhaps a little older based on the RAM chip numbers 
you list below (assuming smaller number means older).  I have the details 
of my TI 9900-related stuff on 
http://vintagecomputer.net/ti/TI-990-101/readme.txt.  Here is a URL of pdf 
links to TI-related hardware http://computer-refuge.org/bitsavers/ti/ and 
try http://www.mainbyte.com/ti99/ in the event that you have a card 
originally from an expansion unit for a 99 4/a.  If you can read Japanese, 
this page appears to have some info as well 
http://www.orchid.co.jp/computer/hardware/parts/tms9900.html

Bill

 >I was going through the basement at my old place today and ran across
 >some boards that I bought at Dayton a large number of years ago. They
 >all seem to be RAM boards of one type or another, one marked "24K",
 >the other "8K w/ECC", loaded with different amounts of TI4060 RAM
 >chips (approx the same package dimensions as, say, 5101 SRAMs). I
 >don't have a net connection there at the moment, and I didn't have my
 >camera with me, or I'd have taken pictures to post, but I thought I'd
 >start by asking if anyone knows of a repository of TI board pictures
 >like some of the Qbus field guides that are out there. I could then
 >do a little browsing to figure out what these are from.
 >One guess is that these look like what I've been reading about on the
 >list recently about the TI990(?). They look newer than the boards in
 >my TI980, and a little larger than those.
 >I also found what look to be like TI laptop parts - a couple of
 >daughter cards that seem to be some kind of video controller, and more
 >of a main board, but without a CPU.
 >I have no particular use for them except as a source of parts. If
 >these sound interesting to anyone here, I can do a little more digging
 >and/or take down part numbers and take pictures.
 >No CPU or I/O cards, sorry.
 >-ethan

------------------------------