IBM Personal System/2 Model 77 486
| Machine type | 9577-0UA |
| Serial | 55-1G140 |
| Manufacturer | IBM Corp., United Kingdom |
| FCC ID | ANO9577 |
| Dated | Feb. 1994 |
Physical description
| Type | Desktop (may be converted to Floor standing) (sticker inside top cvr 23.2.94) |
| Dimensions (HxWxD) | 169 x 440 x 394 mm |
| Weight | 12.6 Kg |
| Drive bays | 1 x 3.5", 3 x 5.25", all accessible |
| Power supply | 197W 110/220VAC switchable (9402) |
Main board
| BIOS | IBM, Oct. 28, 1992 (92 Kb), planar id DEFE |
| Processor | Intel 80486SX-33 MHz (32-bit) PQFP |
| Coprocessor | Socket for 80487DX (*) |
| Cache | N/a |
| Memory | 4 sockets for 70ns 72-pin parity checked SIMMs (PS/2 type) |
| Max on system board | 32 Mb (2, 4 or 8 Mb SIMMs) |
| Bus | MCA 32-bit |
| Expansion slots | 5 x 32-bit (2 w. video ext.), on riser card |
| Interface | Integrated SCSI contr., FDD (2 units) |
| Ports | PS/2 keyboard, PS/2 mouse, 2 buffered serial (UART 16550A), parallel, SCSI |
Cards
| Installed RAM | 4 x 8 Mb, 70ns SIMMs (all und.) |
| Video | IBM 32-bit XGA Display adapter (FCC ID ANO 87F4773, chips sticker 09/12/93) |
Storage
| Diskette drive | 2.88 Mb, 3.5" slim (Mitsubishi MF356F, DEC. 1993) |
| Hard disk | Quantum ProDrive LPS240S (240 Mb) SCSI, 3.5" slim (late 1993, cables WK 08/94) |
Trivia
| Acquisition | May 2000, bought for a few $ together w. some other appliances, including PS/2 system units and 8514 monitors |
| Condition | Very good, working |
| Installed O.S. | None |
| Repairs/modifications | Added 2 x 8 Mb memory SIMMs (it had 16 Mb only) |
| Current status | All hw working |
| Current O.S. | MS DOS 6.22, MS Windows for Workgroup 3.11 (Italian) |
| Spare parts | Drives, power supply, accessories |
Notes
This is an earlier 8577 machine, nicknamed "Bermuda" (later models are called "Lacuna"). Model code 0xx indicates no O.S. was originally installed.
Peripherals: KEYBOARDS, MONITORS, MICES, PRINTERS
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published on the web on Nov. 11, 2001 |