jbdigriz Posted September 30, 2020 Share Posted September 30, 2020 (edited) 6 hours ago, pnr2015 said: Do you have that user guide (or a link)? Did anybody ever come across a copy of the "990/12 Writeable Control Store Assembler and Language" manual? Regrettably, no. Been looking high and low for a while on both. As well as basically anything 990, Business System, including the TIPC and other Intel-based, the 68K machines, NuBus, Explorer, NuMachine, Lisp uP, etc. that bitsavers, kl99, etc. don't have online yet. Also 960, 980, ASC, the earlier TIACs, and so forth. And some of the 3rd-party 990 boards, and the 990-based PC add-in systems. So far it's been interesting tracing the development histories of these machines. Some fascinating stuff. The Ten-X COBOL accelerator was another product that "walked out the door" from TI. Used AM29203 ALU's. Customers wanted faster COBOL, TI decided it would rather sell /12's than a /10 add-in card, so the engineers working on the concept left and started Ten-X. Far from done but I hope to start writing some of this up soon. 990 microcode is of course a different animal than 99K macrocode assembly, but if your aim is to implement the rest of the /12 instruction set, it would be useful to know. I'll post anything I find here. jbdigriz Edited September 30, 2020 by jbdigriz 1 Quote Link to comment Share on other sites More sharing options...
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