Last update Jan 21 2023. My Webpage for STDbus stuff is linked here.. Please refer to that page for details on STDbus and lists of STDbus or Pro-Log products I have or are familiar with. The focus of this Web page, is to identify Pro-Log products before STDbus was established, which were on the same 56-pin card form factor.
For other early Pro-Log boards, check my Prolog 4040 and 4004 products at this link. A historically similar bus is the S-100 bus, check my S-100 page here.. To email me, see see my ordering Web page for my email addresses.
Before Pro-Log and Mostek developed the STDbus, Pro-Log sold microprocessor controller boards for the 4004, 4040, 8008, and other 8-bit processors. These products used the same 56-pin card as STDbus. But these cards used the edge connector as an I/O and specific-purpose connector, with only some pins designated as a "bus" of address, signals, and data. (Some I/O connections were through DIP IC sockets connecting through flat-cables ending in DIP pins.)
One design version, is among the Pro-Log 4040 and 4004 supporting cards on this linked Web page. That page lists various documents which describe those boards and some of the early STDbus products of Pro-Log.
I'm still working this out; but I believe the "PLS" product line, were non-STDbus cards, and processor-specific. The "MPS" product line, may be bus-based but also processor specific. I believe early Pro-Log STDbus cards were designated with various four-digit board numbers which were numbered into various categories; 7000-numbered in particular. Early Mostek STDbus cards, were the MD or MDX series of Z80-based boards.
Keep in mind, the early microprocessors were a surprise to most engineers and business-managers. As interest grew in the design community and then the customer base, management played catch-up. Also, as digital logic and processors and memory became more sophisicated (and often cheaper), engineers had to catch-up and design these into products. Many of Pro-log's customers were design engineers who were either training on these products or using them for development tools, or directly designed them into products. Some engineers replaced individual old control systems with these new microprocessor-based boards. Things moved fast, and products came and went or were re-defined in years or months.
These are items that I've found, as documents such as manuals or sales product descriptions, or actual Pro-Log boards. There may be multiple number-designations. Companies in the early 1970's era often re-defined their microprocessor product lines as they sorted out how to design and market these products.
8008, 8080, 6800 MPS products ---------------------------------- MPS 803, 803-1 - 2 pgs (8111, 8112, 8113) MPS 805, 805-1 - 2 pgs (8811, 8814, 8815, 8816, 8117) MPS 821 - 2 pgs 8008 system analyzer MPS 881 - 2 pgs 8080 CPU system MPS 883 - 2 pgs (8811, 8112, 8113-1) MPS 8111 - 2 pgs 8008-1 MPS 8112 - 2 pgs rom/ram MPS 8114 - 2 pgs input MPS 8115 - 2 pgs output MPS 8116 - 2 pgs ROM MPS 8117 - 2 pgs RAM MPS 8118 - 2 pgs interrupt MPS 8401 - 2 pgs driver out MPS 8402 - 2 pgs relay out MPS 8403 - 2 pgs optoisolated out MPS 8404 - 2 pgs triac out MPS 8405 - 2 pgs terminal strip MPS 8406 - 2 pgs TTY current loop (no UART) MPS 8611 - 2 pgs 6800 CPU MPS 8811 - 2 pgs 8080 CPU CRS-81 - 1/2 rack card cage for 8811A, 8816, 8814, 8815. 4 pgs CRS-82 - 1/2 rack card cage for 8821, 8114, 8115-1. 4 pgs (Giuli Microprocessors Inc) Communications Card COM-412, , 2 pgs 4004, 4040 PLS products ----------------------- PLS 401 - 3 pgs PLS401 card 4004 PLS 402 - 2 pgs 4115, 4113 4004 + I/O cards PLS 403 - 2 pgs (4111 4004 CPU, 4112 ROM, 4113 I/O) PLS M422 - 2 pgs system analyzer PLS 441 - 2 pgs 4010 4040 CPU PLS 442 - 2 pgs 4415 4040 CPU, 4113 I/O PLS 443 - 5 pgs wiring between 4417, 4418, 4113 PLS 4111, 4111-2 - 2 pgs 4111 4004 CPU, 4111-2 RAM+I/O PLS 4112, 4112-2 - 2 pgs 4112 ROM, 4112-2 ROM+I/O PLS 4113 - 3 pgs schematic I/O PLS 4114, 4114-2 - 2 pgs 4114 or 4114-2 I/O PLS 4115 - 2 pgs 4004 CPU PLS 4117 - 2 pgs schematic + 4 pgs document RAM PLS 4118 - 4 pgs schematic, control/display PLS 4121 - 2 pgs 4004 PLS 4415 - 2 pgs 4040 PSS 4417 - 2 pgs schematic 4040 PLS 4418 - 2 pgs schematic ROM CR5, CR10 - 2 pgs card racks, CR5-1 for PLS401, CR5-2 for PLS402, CR5-3 for PLS403 6800 PLS products ------------------ PLS-868 , one-card 6800 CPU, 4 ROMs, 4-2114 RAM - DIP sockets for I/O ports. A and C revisions known
Microprocessor User's Guide, 9/75, 34 pgs
--presentations from WESCON 1974 & 1975 on use of microprocessors
--brochures on MPS-883, PLS-401, Series 90 PROM pgrm, M821 system analyzer
--covers 4004, 4040, 8008, 8080
The Designer's Guide to Programmed Logic, 1973 and 1977 versions. The 1973 version supports the Intel 4004 and 4040 processor products, the PLS 400-series of Pro-Log boards. One, two or three cards can implement a complete control system, with more or less memory and I/O. The 4004 archtechure has a very small 4-bit bus so many of the 56-pins are used for additional I/O.
The archive site bitsaver.org has a Pro-Log section. Archive.org has copies of those documents, and other Pro-Log document copies.
Bitsavers.org has a 1979 Mostek Microcomputer Products Data Book of Mostek's early STDbus products.
Copyright © 2023 Herb Johnson