Other uses I've heard about, and quotes from various people I've corresponded with who have worked with the stuff:
-- "It was a horticultural process control computer (heating, vents, watering, etc) of the late 1970s/early 1980s. The circuit boards were made inhouse, using the TMS9900 as a CPU, the TMS9901 as interface, then the operating system was stored on a EPROM, the customer configuration and settings on an EEPROM. This interfaced to other boards by ribbon cable for input measurements and solid state or relay outputs to operate on-site hardware. The computer was programmed by service engineer using a DOS application through RS232, there were no moving parts, disc drives or fan for reliable operation, the settings were backed up automatically on a daily basis to the EEPROM."
-- TI Portable Speech Lab - real time conversion of speech to LPC for the speech chips.
-- Heavily used in semiconductor fab equipment made by a company called Varian.
-- Litton aircraft radar (a radar mounted in an aircraft nose cone, I believe).
-- "I used to design HW + SW for 99xx in geophysical data and instrumentation systems throughout the 80's; all real time HW and SW that went into airborne systems."
-- A PBX controller for Dutch PTT based on 99105 motherboard.
-- "The TMS9900 was the first microprocessor I used, way back in 1979 when I was doing research on data communication at Aston University. The Control lab boys were using the 9900 and so it made sense for us Telecomms bods to follow them. We built our own systems but borrowed their development kit - a TI990/10 minicomputer. It had 160K bytes of memory and three 2.5MB hard disk drives. You know the things; disks almost the size of dustbin lids."
-- "I did some industrial controllers for machine tools back in the 80's."
-- "They built a spectrum analyser based on the TMS9900 with their own hardware and pcbs."
-- Used in the Tektronix 7854 oscilloscope.
-- "There was a team at (deleted) developing electronics for the Navy and I was part of that team. The equipment used FFT (Fast Fourier Transform) to analyse pressure waves in water (aqua phones) and based on this, a special sort of display was created and shown. This was then interpreted by expert users and they could then understand what types of vessels (and fish) were around the vessel. This equipment was carried by both submarines and surface vessels. Basically for the time it was pretty advanced. It was all housed in several 19 inch racks (4 I think) and used lots of power. It was water cooled. The SBP9900s (in production) were used for various control functions within this equipment. I do not remember how many processors we had in the total device but if we assume about 24 drawers in the whole device I think we had between 2 and 4 processors in each drawer. The processors didn’t do the FFTing of course. At that time we had many TRW 16 bit multipliers working as part of the FFT processing chain. We handled all the exceptions and also all of the control functions (terminals etc.) via the processors. We designed all our own boards plus our own “operating system” for the Texas processors. All of the work was done in assembly (I can remember TXMIRA) and we used the “big” Texas development systems. There was AMPL which we used for emulation, debugging etc. To boot the development system you had to type the bootstrap code in by hand. There were 15 buttons on the front panel. At the time each system had 80 MByte of RAM (battery backed up, using lead acid accumulators I think). We were using so much memory that we could have an effect on memory prices so we were not allowed to say how much memory we needed."
Edited by Stuart, Mon May 22, 2017 4:24 PM.