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Show new changes starting from 05:55, 29 September 2026
 
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27 September 2026

     10:36  IBM PS/2 Model 80 Troubleshooting Guide diffhist +6,485 Josh talk contribs (Rebuild against Ardent Tool's three 8580 planar pages: there are three planar types not two, and the -111/-311 models were on the wrong one; 'seven 32-bit MCA slots' and 'one 8-bit MCA slot' do not exist (Types 1/2 have three 32-bit and five 16-bit, Type 3 four and four); the 70 ns memory requirement is unsourced (both documented kits are 80 ns); replace the three invented ECAs with the real ECA 051 (8580 memory parity errors, FCT841 modules at U24/U34) in IBM's own words; '161 - replace DS12...)
     08:59  IBM PS/2 Model 80 Capacitor Replacement Guide diffhist +67 Josh talk contribs (Link the documentation page for each cited manual, keeping the File: link as the direct download)

25 September 2026

      00:20  IBM PS/2 Model 30 2 changes history +156 [Josh (2×)]
     
00:20 (cur | prev) −99 Josh talk contribs (P4 verification: remove the now-duplicated manual link bullet (superseded by the fuller documentation line))
     
00:19 (cur | prev) +255 Josh talk contribs (P4 verification: link the IBM manuals hosted on this wiki that document this machine (they were unlinked from every article))
     00:20  IBM PS/2 Model 25 2 changes history +88 [Josh (2×)]
     
00:20 (cur | prev) −96 Josh talk contribs (P4 verification: remove the now-duplicated manual link bullet (superseded by the fuller documentation line))
     
00:19 (cur | prev) +184 Josh talk contribs (P4 verification: link the IBM manuals hosted on this wiki that document this machine (they were unlinked from every article))
     00:19  IBM PS/2 Model 80 diffhist +260 Josh talk contribs (P4 verification: link the IBM manuals hosted on this wiki that document this machine (they were unlinked from every article))
     00:18  File:IBM PS2 Model 80 Technical Reference Oct90.pdf diffhist +1,265 Josh talk contribs (P4 verification: real File: description - document identity from its own title page, page count, honest source note and honest licence block)
     00:16  IBM PS2 Model 80 Technical Reference (May 1988) diffhist +2,660 Josh talk contribs (P4 verification: real documentation page - title as printed, part/form number, edition, contents, honest gaps, what it settles, cross-links)
     00:16  IBM PS2 Model 80 Technical Reference (April 1987) diffhist +4,193 Josh talk contribs (P4 verification: real documentation page - title as printed, part/form number, edition, contents, honest gaps, what it settles, cross-links)
     00:16  IBM PS2 Model 80 Schematics diffhist +3,769 Josh talk contribs (P4 verification: real documentation page - title as printed, part/form number, edition, contents, honest gaps, what it settles, cross-links)

23 September 2026

     03:33  IBM PS/2 Model 30 diffhist +4,256 Josh talk contribs (Rebuilt against IBM's Model 30 Technical Reference and announcement letters plus the ardent-tool planar maps. Three figures were wrong: the 8086 Model 30 DOES have a real-time clock (NS MM58167AN at U16, IRQ2, with the 3 V lithium cell on the RISER at B1, not on the planar); the fixed-disk interface is a dedicated 44-pin I/O channel with the controller on the drive, not ST-506; and the supplies are 70 W (8086, internal sensing) and 90 W (286, switched) - there is no 80 W unit. Also fixed two...)
     03:31  IBM PS/2 Model 25 diffhist +2,963 Josh talk contribs (Rebuilt against IBM's Model 25 Technical Reference (hosted here) and the ardent-tool planar maps. Colour PSU is 113 W not 115 W (IBM TechRef; the Canadian quick reference rounds it) and the 286/SX are 124.5 W; the fixed disk is a dedicated 44-pin I/O-channel connector with the controller ON THE DRIVE, not an ST-506 controller or an aftermarket ST-506 kit; keyboard and mouse ports ARE interchangeable on the 8086 per IBM, so the '301 error if swapped' claim is removed; corrected the planar chip...)
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