IBM Personal System/2 Model 90 XP 486
| Type | 8590-AJ9 |
| Serial | 55-AKA14 |
| Manufacturer | IBM United Kingdom Ltd. |
| FCC ID | ANO8590A |
| Pre-loaded software | DOS 4.01 |
| Date | June 1992 |
Physical description
| Type | Desktop |
| Dimensions (HxWxD) | 140 x 440 x 430 mm |
| Weight | Approx. 11.4 Kg |
| Drive bays | 3 x 3.5" half-height, 1 x 5.25" half-height (all accessible) |
| Power supply | 194 W, 110-220VAC manual voltage switch (9222) |
Main board
| Chipset/Manufacturer | IBM (planar id FF6F) |
| Bus | Micro Channel (MCA) 32-bit |
| Expansion slots | 4 x 32-bit (1 w. video ext., 3 available), one 64-bit for Processor complex (proprietary), two 64-bit for memory cards (proprietary) |
| Interface | FDD (2 units) |
| Video | Integrated 16-bit XGA display adapter (1024x768, 16 colours; 640x480, 256 colours) |
| Ports | PS/2 keyboard, PS/2 mouse, 2 buffered serial (UART 16550A), parallel, XGA |
Cards
| Processor |
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| Memory | 2 memory riser cards (dated 9227), each features 4 sockets for 70ns 72-pin SIMMs, parity checked (PS/2 proprietary) (**) | ||||||||||||
| Installed RAM | 32 Mb 70ns on riser cards (8 x 4 Mb SIMMs type 71F7010, und.) | ||||||||||||
| SCSI Controller | IBM 32-bit PS/2 bus master SCSI adapter/A w. 512 Kb cache (id 8EFF) (sticker 10/06/92) |
Storage
| Diskette drive | 1.44 Mb, 3.5" slim-height (Alps DFR723 dated 92-05) |
| Hard disk | Model WDS-3160 (160 Mb) SCSI, 3.5" half-height |
| 2nd Hard disk | Model WDS-3160 (160 Mb) SCSI, 3.5" half-height ADDITION |
Trivia
| Acquisition | Mid-98, collected in a dump together w. other appliances, incl. another PS/2 8590-AJ9 which was demolished |
| Condition | Very good, setup needed |
| Installed O.S. | IBM PC-DOS 5.00 (Italian) |
| Modifications | Removed token-ring adapter, added second hard drive, added 4 memory SIMMs (it had 16 Mb only) |
| Current status | All hw working |
| Spare parts | Almost everything, incl. drives, planar, etc. |
Notes
(*) Existing processor complex can be changed with a newer one (Type-2, 3, or 4, CPUs up to Pentium-90), supporting up to 256 Mb of RAM
(**) slower 80ns SIMMs can be used instead. With a Type-1 complex SIMMs must be installed in pairs.
Peripherals: KEYBOARDS, MONITORS, MICES, PRINTERS
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This page was first
published on the web on Nov. 11, 2001 |