IBM ROMs
These are binary image files of some of the more sought-after late revision PS/2 Microchannel ROMs, suitable for use with most EPROM programmers. They are provided as is, without any guarantee or warranty of any kind; use at your own risk. All files are compressed with PKZIP 2.04G.
| 61G2976 | 65,536 | Microcode 61G2977 Revision 0026, 1993, for PS/2 Caching SCSI controller. 27C512 |
| 92F2244 | 32,768 | BIOS 92F2246, 1991, for PS/2 Caching SCSI controller. Needs 92F2245 also. 27C256 |
| 92F2245 | 32,768 | BIOS 92F2247, 1991, for PS/2 Caching SCSI controller. Needs 92F2244 also. 27C256 |
| FD700M77 | 8,192 | IBM BIOS v1.01 for Future Domain MCS-700 card used in PS/2 Model 77s. 27C64 |
| MCS700.361 | 8,192 | Future Domain MCS700 v3.61. 27C64 |
| 25H3518 | 16,384 | IBM LAN Adapter/a For Ethernet (Sonic-T chipset) v2.2. 27C128 |
| 52G9509 | 131,072 | Model 90/95xp 486 Type 1 Processor Complex |
| 41G9361 | 131,072 | Model 90/95xp 486 Type 2 Processor Complex, courtesy of Tim Clarke. |
| 04G3759 | 16,384 | IBM ESDI Attachment ECA Microcode |
| SVGA141.ROM | 32,768 | IBM Cirrus 5428 1 MB short SVGA/A BIOS v1.41. 27C256 32-pin PLCC |
| CL28 | 32,768 | Japanese IBM 5428 SVGA/A BIOS v1.41. 2 MB Capable? Thanks to T. Sunagawa. |