The Bellmac-32 was probably the last CPU by AT&T Bell Labs / Western Electric, following the Bellmac-8, CRISP, Hobbit chips: https://en.wikipedia.org/wiki/BELLMAC-8 https://dl.acm.org/doi/abs/10.1145/30350.30385 The hardware architecture of the CRISP microprocessor https://en.wikipedia.org/wiki/AT%26T_Hobbit Photo of the MAC-8 and Bellmac 32: https://www.cpushack.com/2013/06/16/cpu-of-the-day-bell-labs-bellmac-8-aka-t... I'm trying to find the MAC-8 article in the Bell System Technical Journal issue of February 1981 (Vol 60, number 2). It is NOT one of the selected papers from the BSTJ (Bell System Technical Journal) here: https://ftp.math.utah.edu/pub/tex/bib/toc/bstj1980.html Here's something related: https://www.telephonecollectors.info/index.php/browse/bstj-archive https://archive.org/details/bstj57-6-2251/mode/2up BSTJ 57: 6. July-August 1978: UNIX Time-Sharing System: A Support Environment for MAC-8 Systems. (Rovegno, H.D.) A 32000 chip was on display in MARCH's CPU exhibit mostly for the unique package with pins that went thru the package. I chronicled some of the 32000 chip: http://ferretronix.com/tech/3b2/index.html MARCH has a 3b2/310 and 630 terminal. The Jerq/Blit/630/730 terminals were 68k based but the 5620 was 32100 based. Wikipedia seems correct with: https://en.wikipedia.org/wiki/Blit_(computer_terminal) The Blit programmable bitmap graphics terminal was designed by Rob Pike and Bart Locanthi Jr. of Bell Labs in 1982. The Blit technology was commercialized by AT&T and Teletype. In 1984, the DMD (dot-mapped display) 5620 was released, followed by models 630 MTG (multi-tasking graphics) in 1987 and 730 MTG in 1989. The 5620 used a Western Electric 32100 processor (aka Bellmac 32) and had a 15" green phosphor display with 800 x 1024 x 1 resolution (66 x 88 characters in the initial text mode) interlaced at 30 Hz. The 630 and 730 had Motorola 68000 processors and a 1024 x 1024 x 1 monochrome display at 60 Hz (most had amber displays, but some had white or green displays).