a "field guide" for older TI memory boards

[Ethan Dicks]

On Sat, 19 Mar 2005 00:14:51 -0500, B. Degnan <billdeg at degnanco.com> wrote:
> 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.

OK... I don't have an exact count, but my cards have _two_ sets of
edge fingers, each set *well* over 44 pins, perhaps as many as 100
each.  From what I've been reading, I don't think these are from a TI
990... I would have to guess they are from something older, as the
RAMs are 4kbits, and from what I can tell, the TI 900 is from later
than the 4kbit RAM era.

I guess the next step is to get some pictures online and go from there.

Thanks for the pointers to the TI resources.

-ethan