Old Chip Info?

[Rick Bensene]

I've recently acquired an old Wang 144T programmable electronic calculator.
Early '70's technology.  Uses a lot of 7400-series TTL, along with some
older
DTL.  It is a microcoded machine, using a Texas Instruments TMS 2600 2K-bit
Mask Programmed ROM for the microcode store. I want to try to capture the
content
of the ROM, but I've not been able to find a pinout and specifications for
it anywhere.

Anyone out there have any old TI databooks that they might find this
old device in?  The date codes on all of the parts in the machine
range from 7132 to 7144, so it's all mid-to-late '71 timeframe for
manufacture,
if that helps.  According to one reference I found, the chip was introduced
in 1970.

Thanks,

Rick Bensene
The Old Calculator Web Museum
http://oldcalculatormuseum.com