2023 Changelog

For more recent changes go HERE.


25 Dec 2023 – 27 Dec 2023

  • Added NIC Full-Duplex Operation (FDX) page [1] containing:
    • General description (by IBM)
    • Info on supported adapters
  • XGA & XGA-2 - added XGA Demonstration (thx David)
  • Madex CPU Adapters for Socket 5 and 7 - 586006 interposer part ID
  • IBM PC730/750 page:
    • Additional info about board variants - different video and chipset
    • Added info about the older SuperCore chipset incl. OCR'd PDF overview
    • Added InfoWorld links
  • Processor Documentation section:
    • Added a complete copy of MPR Vol. 6.1 to 14.39 docs + CD-ROM ZIP
    • Additional MPR PDFs
    • Organized all MPR PDFs by date for easier navigation
    • Updated index
    • Added InfoWorld links
  • Added IBM History page containing:
    • PDF documents
    • External links
  • IBM Plant Codes - minor additions and tweaks
  • Reworked top menu functionality; style tweaks
  • Removed the "MAD Edition" branding. This is the only actively maintained version.
  • Other minor changes

   [1] Page created by Louis Ohland; edited by Tomáš Slavotínek

20 Dec 2023

  • IBM Plant Codes page:
    • Added info posted by Michael Quaranta on IBM forums
    • Highlighted conflicting information
    • Presentation improvements
  • Disk Collection - added LANStreamer disks (trmls16, trmls321 & trpals4)
  • IBM PC730/750 - additional P/N, Vision864 ID (thx Christian Holzapfel)
  • Added LANStreamer MC 16 page [1] containing:
    • ADF/DGS links and disk image links
    • Disk images (EXE, ZIPped IMA)
    • Announcement letter
    • Adapter outline and parts list [2]
    • Adapter photos [3]
  • LANStreamer MC 32 - minor changes to match the LS MC 16 page
  • ADF Stash - added DGS for 8FA4 (thx Louis)
  • Other minor changes

   [1] Page created by Louis Ohland; edited by Tomáš Slavotínek
   [2] Outline and part ID by Tomáš Slavotínek; edited by Louis Ohland
   [3] Photos from ebay seller "Stan Shih Computers LLC"

18 Dec 2023

  • IBM PC730/750 page:
    • Added proper planar outline and parts list (replaces IBM's diagram) [1]
    • Added planar photo [2]
    • Added PC750 PCI/MCA riser outline and parts list [1]
    • Added PC730 PCI/ISA riser outline and parts list [1]
    • Added chipset information
    • Added PCI/ISA to PCI/MCA cross-flash info
    • Reworked and expanded jumper setting section
    • Added zipped image of the latest flash update disk
    • Added "PC Server 310" to the title
  • IBM PC720 - various changes to match the PC730/750 page update
  • List of IBM ASICs & GAs - PC7x0-related additions/changes
  • IBM PC Server Family - added link to PC750/730 & PC Server 310 page
  • Other minor changes

   [1] Outline and part ID by Tomáš Slavotínek
   [2] Photo by Tomáš Slavotínek

09 Dec 2023

   [1] Outline and part ID by Tomáš Slavotínek
   [2] Photos by Alexandros Paterakis
   [3] Photos from ebay seller "ctesales"

03 Dec 2023 – 07 Dec 2023

   [1] Files from Hugh Burns
   [2] Files from Moussa
   [3] Outline and part ID by Tomáš Slavotínek
   [4] Photo from ebay seller "on-wing"
   [5] Files sourced from Center for Embedded and Cyber-physical Systems

29 Nov 2023

21 Nov 2023

   [1] Files and information from Christian Holzapfel
   [2] Article HTMLized by Louis Ohland, edited by Tomáš Slavotínek

19 Nov 2023 – 20 Nov 2023

  • P/390 - S/390 Microprocessor Complex page:
    • Added disk images (thx Alexander Paterakis) [1]
    • Added fixpacks (thx Alexander Paterakis) [1][2]
    • Added PDF documents (thx Alexander Paterakis) [2]
  • Roland MPU-IMC - added better adapter photos [2]
  • 8525 Planar - planar FRU P/N correction
  • Added Tecmar MicroRAM 386 page containing:
    • Adapter photos [3]
    • Adapter outline [4]
    • Support files [3]
    • Overview of adapter's features
  • Added Serial EEPROM page containing:
    • General information about the serial EEPROM subsystem
    • List of supported machines
    • List of used devices
    • Info about programming interface and equipment
  • Lacuna Planar page:
    • Added SLC3/BL2 to the outline/parts list
    • Added EEPROM prog. header to the outline/parts list
    • Minor outline corrections
  • Bermuda Planar page:
    • Added EEPROM prog. header to the outline/parts list
    • Other parts list tweaks
  • 9556 / 9557 Planar page:
    • Added EEPROM prog. header to the outline/parts list
    • Other parts list tweaks
  • 9585 Type 1 Planar page:
    • New planar outline
    • Added note about alternative board layout
    • Added EEPROM IC to the outline/parts list
    • Added EEPROM prog. header to the outline/parts list
    • Added J15 clock selection info to the parts list
    • Added B1/B2 bus bar info to the parts list
    • Added U4 audio op-amp to the outline/parts list
  • 9585 Type 2 Planar page:
    • Reworked planar outline
    • Added EEPROM prog. header to the outline/parts list
    • Corrected bus bar B2 info in the outline/parts list
  • 8595 / 9595 XP Planar page:
    • Reworked planar outline
    • Corrected test point info in the parts list
  • 9595A / Server 500 Planar page:
    • Reworked planar outline
    • Added EEPROM prog. header to the outline/parts list
  • Common Jumpers & Connectors page:
    • Added alt. interlock connector info
    • Added info about undocumented power request pins for JMP3
    • Added JMP6 pinout diagram
  • S36/38 Workstation Emulation Adapter - corrected short adapter photo banner
  • 3270 Connection Adapters - ISA adapter parts list corrections
  • Token-Ring Network 16/4 Adapter/A page:
    • Corrected the older vs newer adapter identification (thx David)
    • Corrected ZM3 P/N for the older adapter (thx David)
  • Micro Channel Pinouts page:
    • Errata (OCR)
    • Reworked image & table references
    • Added links to the original PDF documents
  • Processor Complex Pinout - minor errata
  • Model 5550 386 page:
    • Updated S/T Stage 2 Planar outline and parts list, leaking caps info
    • Added datasheet links
    • Added 5551-S0/T0 specifications
    • Added external links
    • Reorganized, fixed some typos
  • Added 5550-S/T/V Engineering Changes page [5]
  • List of IBM ASICs & GAs - 5550 386-related additions/changes
  • Japanese Display Adapters page:
    • Added Display Adapter I POS ID and alt. name
    • Added ADF links
    • Added BIOS Modes [5]
    • Added external links
  • IBM SCSI - added link to a blog post about BlueSCSI on Spock (thx Louis)
  • Future Domain SCSI - added values of Patriot caps [6]
  • ChipChat 16 & 32 - added photos [2]
  • ATI 8514 Ultra page:
    • Added User's Guide version 2.1 [2]
    • Added 1130111315 ROM image dump [2]
    • Added floppy images [2]
  • IBM Display Adapter 8514/A - added datasheet links
  • Added IBM ROM BASIC page containing: [8]
    • General information about ROM BASIC
    • List of supported machines
    • List of ROM BASIC versions
    • List of BASIC.COM/BASICA.COM versions
    • Description of relevant interrupt routines
  • Adapter Picture Collection - recovered 6 missing images, minor errata (thx David)
  • Added the following ADF files to the ADF Stash and relevant adapter pages:
    • @8F62.ADF IBM 10/100 Mbps TX MCA Ethernet Adapter (custom) [7]
    • @EFFE.ADF Japanese Display Adapter (alt., Japanese text) + ADP
  • Datasheets - various additions/replacements
  • IBM Plant Codes page:
    • Added info about codes 23, 72 & 91 (thx Joe George)
    • Corrected code 10 from Rochester NY to MN (thx Fant Steele)
    • Swapped the Notes and Source columns
  • Style/layout changes to make the page more usable at higher resolutions
  • Other minor changes

   [1] Files sourced from Kevin Bowling's archive (original)
   [2] Photos/files from Alexander Paterakis
   [3] Photos/files from Ilya Vorobiev
   [4] Outline by Tomáš Slavotínek
   [5] Content by "Akamaki" from Diary on wind
   [6] Information provided by Josh Behrends
   [7] Files from Ryan Alswede
   [8] Based on content by David Beem

29 Jul 2023 – 30 Jul 2023

   [1] Photos/scans by Tomáš Slavotínek
   [2] ROM dump by Tomáš Slavotínek
   [3] Photos from David Beem
   [4] Photos from ebay seller "bdemchak"

07 Jul 2023

   [1] Article HTMLized by Louis Ohland, edited by Tomáš Slavotínek
   [2] Outlines and part ID by Tomáš Slavotínek
   [3] Photo from Ilya Vorobiev

28 Jun 2023

   [1] Photo from Ilya Vorobiev
   [2] Outline by Tomáš Slavotínek
   [3] Article HTMLized by Louis Ohland, edited by Tomáš Slavotínek

03 Jun 2023 – 04 Jun 2023

  • 8573 P70 page:
    • Added oscillator frequencies for the old DA
    • Added PLPC info
  • Added Matrox Impression page containing:
    • Adapter outline and parts list [1]
    • Adapter photo [2]
    • Drivers and other files (thx Louis!)
    • Impression/Ultima variants
    • RAMBIOS.SYS info
  • Matrox MG-108-M - added local copy of the files (thx Louis!)
  • Added Finn Thogersen's VGADOC version 4b
  • ChipChat 16 & 32 page:
    • Added disk 1 & 2 images [3]
    • Added User's Guide (from disk 1)
  • Added IBM 386DX Processors page [4]
  • Added QEMM 50-60 page w/ disk image and information [4]
  • Other minor changes

   [1] Outlines and part ID by Tomáš Slavotínek
   [2] Photo from ebay seller "on-wing"
   [3] Disk images provided by Lionel Harris
   [4] Files and information provided by David Beem

27 May 2023 – 28 May 2023

  • IBM SCSI Serial Console page:
    • Expanded the console announcement section
    • Updated the command list
    • Added description of the Trace command
    • Corrected and expanded description of the Fill command
    • Added some info about the ALIVE/ITS signals
    • Additional timing info for the loopback detection signal
    • Added Further Reading
    • Corrected/removed some now obsolete info
  • IBM Ultimedia Audio (7-6) page:
    • Updated outline & additional part ID
    • Added some datasheet links
    • Added PROM speculation
    • Added Y1 xtal info
    • Added scans of the 11H7636 adapter [1]
  • External Links - aperiodic update (Jim's page is back)
  • 8573 P70 page:
    • Added oscillator frequencies for the old DA
    • Added a piece of PLPC info
  • Other minor changes

   [1] Photos/scans by Tomáš Slavotínek

23 May 2023 – 24 May 2023

  • IBM SCSI Serial Console page:
    • Added diagrams of the serial connection
    • Added info about entering the 80188/80186 console
    • Updated the command list
    • Added description of the @, RC1A, RC1B, RC3 commands
    • Replaced examples based on disassembly with captured console output
    • Added a note about CHRESET's source (thx Louis)
    • Added a terminal screenshot
  • Other minor changes

21 May 2023

  • 8573 P70 page:
    • HTMLized plasma display pinout table
    • Styled the other pinout tables
    • Edited Arne Falch's findings
  • Added IBM DBA-ESDI Hard Drives page containing:
    • Information moved from the P70 page
    • Styled pinout table
    • Additional links
  • Other minor changes

18 May 2023

   [1] Outlines and part ID by Tomáš Slavotínek
   [2] Photos from DreamHardware and SuperVinx
   [3] Photos/scans by Tomáš Slavotínek
   [4] Photos by Tatsuo Sunagawa
   [5] Content collected and HTMLized by Louis Ohland; formated by Tomáš Slavotínek

27 Apr 2023

  • IBM Ultimedia Audio - credited Ryan as the author of the installation instructions
  • Other minor changes

23 Apr 2023

   [1] Photos and ROM dumps by Eric Schlaepfer aka "Tube Time"
   [2] Outline and part ID by Tomáš Slavotínek

18 Apr 2023 – 20 Apr 2023

   [1] Reverse engineered by Eric Schlaepfer aka "Tube Time"

15 Apr 2023 – 16 Apr 2023

  • Type 0 Complex page:
    • Added adapter photos [1]
    • Additional adapter ID info
  • PDF Documents - added IBM PC 300, 700, IntelliStation HMMs
  • IBM PC730/750 page:
    • Added video, audio & various other disk images
    • Added riser information
    • Added links to IBM PC 300, 700, IntelliStation HMM
    • Added EPRM links
  • IBM PC720 page:
    • Chipset identification
    • Part ID corrections and additions
    • Added EEPROM header info
  • IBM SCSI and planar pages - BIOS vs microcode ROM errata
  • SCSI-2 Fast/Wide Adapter page:
    • PLCC socket info errata, pin info, and ROM datasheets
    • Additional part ID
    • Added flash info, datasheet and photo
    • Additional J7 pinout info
    • Corrected and expanded jumper info
    • Reorganized and cleaned up
  • 85/95 Common Devices - added better SIMM layout illustration (thx Louis)
  • Added Dual Path / Dual Bus Memory page, merged with info from other pages [2]
  • IBM Technical Disclosure Bulletins - added LTB/SCSI related TDB
  • List of IBM ASICs & GAs - added local bus SCSI controller chips
  • Other minor changes

   [1] Photo from ebay seller "nyce-distribution"
   [2] HTMLized by Louis Ohland, edited by Tomáš Slavotínek

02 Apr 2023 – 04 Apr 2023

  • IBM PC720 - added info about riser battery
  • PC720 Power Supply page:
    • Added Remove PSU instructions
    • Added Open PSU instructions w/ photos [1]
    • Added photo of the PSU internals and fan protrusion [1]
    • Better PSU sticker photo [1]
    • Added PSU fan type, specs and photo [1]
    • Additional info about PSU connectors
  • 9556 / 9557 Planar page:
    • Added photo of the SLC3 planar [2]
    • Added photo of an early SLC2 planar [3] (thx Louis)
    • Additional info about BIOS ROM
    • Added info about early SLC2 planar rework
  • Troubleshooting Map - added Blinking cursor issue w/ incompatible memory (thx Louis)
  • SCSI POST Errors - overhauled and extended (thx Louis)
  • Future Domain SCSI page:
    • Cleaned up; fixed dead links
    • Merged with the Patriot Power page
    • Reworked the OS/2 Drivers & Switches section
  • 8590 / 9590 Planar - updated Loading SIMMs illustration (thx Louis)
  • IBM SCSI Microcode page:
    • Tweaked planar links, added MCU links
    • Added missing planar FRU P/Ns
    • Fixed flash size info and added flash image size note
  • SCSI-2 Fast/Wide Adapter page:
    • Added adapter photos [1][4]
    • Additional adapter ID info
  • Other minor changes

   [1] Photos by Tomáš Slavotínek
   [2] Photo from Carsten Lyng
   [3] Photo from ebay seller "intergalacticmicrosystems"
   [4] Photo from ebay seller "dreamhardware_com"

25 Mar 2023 – 27 Mar 2023

   [1] Photos from ebay seller "ctesales" (edited)
   [2] Photos from ebay seller "alan_computech_intl"
   [3] Photos from ebay seller "jordan16j" (edited)

20 Mar 2023 – 21 Mar 2023

  • IBM PC720 page:
    • Updated planar outline/parts list (EEPROM & Op-amp)
    • Reorganized the riser section
    • Added/corrected info on riser jumpers J1 and J2 (thx Tatsuo)
  • 8535/8540 Planar - added outline and parts list [1]
  • Other minor changes

   [1] Outline and part ID by Tomáš Slavotínek

19 Mar 2023

  • 8556 / 8557 Planar page:
    • Three new planar outlines replacing the original one [1]
    • Additional part ID [1]
    • Added info about PCB modules on the early boards; incl. photo [2]
    • Added info about CPU rework on the early boards; incl. photos [2]
    • Added list of notable differences between the board revisions
    • Added photos of the early [3] and later [4] planar
    • Additional BIOS P/Ns
    • Various other corrections and additions
  • 9556 / 9557 Planar page:
    • New planar outline [1]
    • Additional part ID [1]
  • IBM PC720 page:
    • New planar and riser outlines [1]
    • Additional part ID [1]
    • Additional planar and riser photos [5]
    • Various other corrections and additions
  • Networking page:
  • 8580 Planar Memory page:
    • Added Kingston KTM-1000/M80 outline/parts list [1] & photos [7]
    • Added Kingston KTM-2000/M80 outline/parts list [1] & photos [8]
    • IBM 2 MB 90X8670 - updated outline/parts list [1] & photos [9][10]
    • Additional connector types (Burndy & Panduit)

   [1] Outline and part ID by Tomáš Slavotínek
   [2] Photos from Louis Ohland
   [3] Photos from SuperVinx
   [4] Photos from ebay seller "ctsales"
   [5] Photos by Tomáš Slavotínek
   [6] Disk imaged and document scanned by Ray Zeisz
   [7] Photos from ebay seller "austintxresale"
   [8] Photos from ebay seller "black_sails_salvage2"
   [9] Photos from pc-history.com user "MaiklsBlack" (link)
   [10] Photos from sweclockers.com user "Övrigt" (link)

10 Mar 2023 – 12 Mar 2023

  • IBM PC720 page:
    • Added zipped raw images for all disks
    • Added PC720 Utility Diskette v1.10 image [1]
    • Added PC720 Support Diskette v1.10 image [1]
    • Added S3 Vision864 support disk image [1]
    • Added PCMCIA option disk image [1]
    • Added Small PCI Token Ring adapter disk images [1]
    • Added IBM IDE 2x CD-ROM option disk image [1]
    • Added scans of selected floppy disks [2]
    • Additional part ID + links
    • Added images from PS/55 Files page
  • PS/55 Files - Removed PC720 disk images
  • Added PC720 Power Supply page containing:
    • PSU specifications
    • PSU sticker photo [2]
    • Pinout for all PSU connectors
    • Fan info moved from the main PC720 page
  • PS/55 Model 5520 - added planar P/Ns and other ID (thx Tatsuo)
  • Type 4 Complex - tweaked Complex Features table legend (thx Louis)
  • PC Server 195/295 - added zipped refdisk/diags images
  • PC Server 320/520 PCI/MCA - added zipped refdisk/diags/flash images
  • PC Server 320/520 PCI/EISA - added zipped refdisk/diags/flash images; cleanup
  • PC Server 720 - added zipped refdisk/diags images
  • Other minor changes

   [1] Photos and scans from Tomáš Slavotínek
   [2] Disks imaged by Tomáš Slavotínek

03 Mar 2023

28 Feb 2023 – 01 Mar 2023

18 Feb 2023

   [1] Photos from Kevin Moonlight

09 Feb 2023 – 13 Feb 2023

   [1] Photo from aucview.aucfan.com
   [2] Photo from Yahoo! JAPAN Auctions seller "ttl_lv20c"

05 Feb 2023

   [1] Scans by Tatsuo Sunagawa (original HERE)
   [2] Information from Tatsuo Sunagawa (original HERE)

30 Jan 2023

26 Jan 2023

   [1] Photos provided by "limsup"

20 Jan 2023

   [1] Files provided by Christian Holzapfel

07 Jan 2023 – 12 Jan 2023

   [1] HTMLized by Louis Ohland, expanded by Tomáš Slavotínek

Content created and/or collected by:
Louis F. Ohland, Peter H. Wendt, David L. Beem, William R. Walsh, Tatsuo Sunagawa, Tomáš Slavotínek, Jim Shorney, Tim N. Clarke, Kevin Bowling, and many others.

Ardent Tool of Capitalism is maintained by Tomáš Slavotínek.
Last update: 20 Jan 2024 - Changelog | About | Legal & Contact