User’s reference for PS/1 Computer – US, first edition 1990
Technical reference for PS/1 Computer – P/N 57F1970, first edition 1990
Using the IBM PS1 with Windows – Q88661.pdf – Microsoft Q88661 document about using the PS/1 2011 with Windows 3.
I’m looking for ROM sets of any international model not listed here. If you’ve got any of those machines, please see below in the utility section for a program to dump the BIOS. Donations are welcome!
The following ROMs can be used with IBMulator and other emulators.
IBM PS1 2011 – ROM (US).zip – US version
IBM PS1 2011 – ROM (UK).zip – UK version
IBM PS1 2011 – ROM (IT).zip – italian version
IBM PS1 2011 – ROM (ES).zip – spanish version
IBM PS1 2011 – ROM (DE).zip – german version
IBM PS1 2011 – ROM (SE).zip – swedish version
IBM PS1 2011 – ROM (PT).zip – portuguese version
IBM PS1 2011 – ROM (FR).zip – french version
IBM PS1 2011 – ROM (CA).zip – canadian (english) version
The following are EPROM images you can use to restore a damaged machine:
IBM PS1 2011 – EPROM (US).zip – US version
IBM PS1 2011 – EPROM (UK).zip – UK version
IBM PS1 2011 – EPROM (IT).zip – italian version
IBM PS1 2011 – EPROM (DE).zip – german version
IBM PS1 2011 – EPROM (PT).zip – portuguese version
IBM PS1 2011 – EPROM (FR).zip – french version
IBM PS1 2011 – ROMBIOS reverse engineering with IDA pro.zip – BIOS code partially disassembled and commented with IDA Pro (only the POST and some INT functions)
IBM PS1 2011 – ROM drive files (IT).zip – The content of the ROM drive (the D: drive), italian version
IBM PS1 2011 – ROM patched for XTIDE (Intl).zip – Patched ROM version to use with the XTIDE Universal BIOS (all international models except canadian)
ps1audwd.exe – PS/1 Audio Card driver for Windows 3.1
Driver is limited in its capabilities (See README.TXT). Install: Move file to an empty directory. From DOS and the directory containing the file, enter: PS1AUDWD. See the README.TXT file, included, for further install instructions.
CUSTOMIZ.EXE – used to customize the way the machine operates.
CONFIGUR.EXE – used to configure the machine hardware after a hardware modification.
BPP.COM – Bidirectional Parallel Port by Krister Nordvall
Enables/Disables parallel port bidirectional mode on IBM PS/1 2011/2121 computers.
ROMDUMP.EXE – a program to dump the system ROM.
You can use it to dump the content of the ROM to 1 file (for the US version) or 2 files (for international versions.)
Put the EXE in a floppy disk with at least 300KiB (US) / 600KiB (intl.) of free space.
Usage: ROMDUMP us|intl
Use ‘us’ if you have got the US version, use ‘intl’ otherwise.
CMOSDUMP.EXE – a program to dump the CMOS memory to a file named CMOS.BIN
ROMDUMP.EXE and CMOSDUMP.EXE are open source software under the GPL license. You can find the source code at the IBMulator git repo.
Disk images / Preloaded software
Files with the *.img extension are disk images. In order to use a floppy image on a real machine, transfer it on a 3.5″ 1.44MB floppy using a program like WinImage or, if you are on Linux, the dd command. Don’t copy the .img file and don’t unpack its content on the floppy, it won’t work.
All preloaded software includes: IBM DOS 4.01, MS Works 2.0 for DOS, PS/1 Tutorial.
The US version also includes the PRODIGY Service client.
To restore a backup start the PS/1 with a DOS 4.01 bootable floppy, go to the DOS prompt and run “restore a: c: /s”
HDD images are meant to be used with emulators.
IBM PS1 2011 – Advanced Diagnostics.img – IBM Advanced Diagnostics Diskette for PS/1 2011, bootable.
IBM PS1 2011 – DOS 401 with shell.img – IBM DOS 4.01, bootable, starts with the shell.
IBM PS1 2011 – DOS 401 (US).img – IBM DOS 4.01, US, bootable.
IBM PS1 2011 – DOS 401 (IT).img – IBM DOS 4.01, italian, bootable.
IBM PS1 2011 – DOS 401 (PT).img – IBM DOS 4.01, portuguese, bootable.