Summary of changes in BIOS 1.7

[timn@ion.apana.org.au (Tim Noonan)]

The following is an abbridged set of notes extracted from the file
rss750a.txt

Essentially this is what things are fixed/changed in the 1.7 flashrom BIOS
upgrade disk.

IBM ThinkPad System Program Service Diskette Ver 1.07     Jun. 3, 1994

What This Diskette Does

This System Program Service diskette updates the system program stored
in ROM of the following ThinkPad models.
   - ThinkPad 750, 750C, 750P, 750Cs and 750Ce
   - ThinkPad 755C and 755Cs
   - ThinkPad 360, 360C, 360P and 360Cs.
If you are experiencing one of the problems listed in the following
Summary of Problem Fixes section, please follow the instructions given
in the Updating System Programs section below to update the system program
of your ThinkPad 750/755/360 family computer.
[Note these instructions have been deleted]

Summary of Problem Fixes

ThinkPad 750, 750C, 750P and 750Cs
- Intermittent OS/2 hang at the first FDD access following wake-up
  from hibernation.
- Intermittent 199FE error upon wake-up from hibernation.
- Suspend mode entered sooner than the specified System Off Timer value.
- Intermittent 19929 error upon resume.
- Excessive screen flicker after resume (750Cs only).
- Video problems on externally attached ISO monitor (750Cs only).
- Diagnostic long run erroneously reports a 5016 error (750Cs only).

- The external CRT attached to the Dock I goes blank after the
  Operating System is boot-up or resume when the 750's lid is closed.
- System hang by using ROM free Area E000-E6FF described in ROM.
  Correct range (E000-E5FF in this version) is indicated in the area.
- Unable to suspend after removing AC adapter.

- Some of the 16MB memory cards can not be used.
- The Screen Off Timer becomes inactive if any key other than "Fn"
  is depressed to restore the screen.
- System can't enter the suspend mode again if the AC adapter is
  disconnected or connected during the suspend mode.
- Some video adapters installed in the Dock-I fail with an 103 error.
- System with some PCMCIA modem card installed may malfunction
  when suspending.
- Entering the suspend mode may be rejected for around 30 seconds
  with beeps. (This is normal if the CDPD Mobile Communications
  Module is installed.)

ThinkPad 750Ce
- The CPU information is wrong in the EasySetup.
- An 118 error occurs.
- Some video adapters installed in the Dock-I fail with 103 error.
- The external mouse hangs intermittently after Suspend/Resume
  under the DOSSHELL.
- 195 error occurs after hibernation with ATA PCMCIA card in
  the Port Replicator with PCMCIA.
- Audio stops after Standby.

ThinkPad 755C and 755Cs
- Some video adapters installed in the Dock-I fail with 103 error.
- RPL from PCMCIA Ethernet card does not work.
- System hangs when hibernating under the following conditions.
  - One of the primary partitions is HPFS, and
  - The hibernation file is in an extended partition.
- Remote IPL from new IBM Token Ring PCMCIA Card doesn't work.

ThinkPad 360, 360C, 360P and 360Cs
- In block transfer of Video, some dots are missed.
- Remote IPL from new IBM Token Ring PCMCIA Card doesn't work.


Service information

The System Program Service diskette installs System Program as follows.

    ThinkPad model               BIOS part number   Date
    ---------------------------------------------------------
    750, 750C, 750P and 750Cs    59G3987            05/25/94
    750Ce                        40G3482            04/27/94
    755C and 755Cs               89G5118            06/03/94
    360, 360C, 360P and 360Cs    89G5119            06/03/94

The BIOS P/N and the date can be viewed by invoking Easy-Setup and
selecting Config followed by SystemBoard.