heller.umass-cs@udel-relay.arpa (04/15/83)
From: Robert (LISPer DM)Heller <heller.umass-cs@udel-relay.arpa> JAMECO (and some other discount/mailorder electronics companies) list these chips: IDM2901ADC (CPU - 4-bit slice) & IDM2909AJC (micro-program sequencer). I am thinking of putting together a homebrew bit-slice computer, but I want to get data sheets for these chips. My problem is I don't know manufactures these two chips. If anyone knows what company makes these chips, please send me mail at Heller.UMass-CS@Udel-Relay. Thank-you in advance. robert heller
matt@ucla-security.arpa (04/16/83)
From: Matthew J. Weinstein <matt@ucla-security.arpa> The manufacturer is Advanced Micro Devices. They have a very good data book ``Bipolar Microprocessor Logic and Interface Data Book''. Try a local rep, or: Advanced Micro Devices 901 Thompson Place P.O. Box 453 Sunnyvale, CA 94086 (408) 732-2400 - Matt
pn (04/17/83)
My word, what is this world coming to? Advanced Micro Devices is the inventor of the 2900 bitslice family. We also generally make the fastest version. The IDM prefix seems to indicate the particular chips you are considering are made by National and you'll be lucky if they work. National's the kind of place that can't even keep the inventor of the 16000. If you want data sheets, AMD publishes a "Bipolar Microprocessor Logic and Interface Data Book". You can contact your local salesman, or try calling AMD directly (ask for literature) at (800) 538-8450. "Usually proud to work here", Phil Ngai
pn (04/17/83)
On the subject of speed, it may be of interest to note that when AMD decided to second-source MMI's PALs, we ran into a slight problem with DEC. They loved our high programming yields, but our minimum prop. delays were too fast... (6 nS) As the VAX-11/730 is basically just a big box full of PALs, we are now working on a low-power PAL which will run slower. Phil "hey, I can replace Schottky gates with these PALs" Ngai
lee (04/21/83)
If your interested in an alternative approach to the 2900 bit-sliced parts, you might investigate the Am29116. According to AMD, "It's the fastest MPU ever made.". It's a 16 bit bipolar and microprogrammable part plus they have a family of support chips and it's all (well, mostly all) available now. They have some new interesting parts coming out this summer and fall as well that would be useful for anyone considering bitmapped graphics and such. Your local AMD salesman will be happy to tell you more.