IBM Personal System/2 Model 70 386
| Machine Type | 8570-A21 |
| Serial | 55-AKA57 |
| Manufacturer | IBM Corp., United Kingdom |
| FCC ID | ANO9SA8570-B |
| Date | September 1989 |
Physical description
| Type | Desktop (24 AUG 1989 print on rev. of FD panel) |
| Dimensions (HxWxD) | 140 x 360 x 420 mm |
| Weight | 9.5 Kg |
| Drive bays | 2 x 3.5" half-height (accessible), 1 x 3.5 or 5.25" half-height (internal) |
| Power supply | 132 W, 90-137/180-265 VAC auto sense (8938) |
Main board
| BIOS | IBM, Feb. 20, 1989 (128Kb, planar id F9FF, model F80D) |
| Processor | Intel 80386-25 MHz (32-bit) PGA |
| Coprocessor | Intel 80387-25 MHz, PGA ADDITION |
| Cache | 64 Kb 30ns |
| Cache Controller | Intel 82385 |
| Memory | 4 sockets for 80ns 72-pin SIMMs (PS/2 type), parity checked (also accept faster 70ns SIMMs) |
| Max on system board | 8 Mb (4 x 2 Mb - only accepts 2 Mb SIMMs) |
| Max. using adapter cards | 16 Mb |
| Bus | Micro channel (MCA) 32-bit |
| Expansion slots | 3 (2 x 32-bit; 1 x 16-bit w. video ext.) |
| Interface | ESDI HDD (1 unit), FDD (2 units) |
| Video | Integrated 16-bit VGA display adapter (256 Kb; max res. 320x200, 256 colours or 640x480, 16 colours) |
| Ports | PS/2 keyboard, PS/2 mouse, buffered serial, parallel, VGA |
Cards
| Installed RAM | 4 x 2 Mb, 70ns SIMMs (two 37-89) |
Storage
| Diskette drive | 1.44 Mb, 3.5" half-height (Mitsubishi MF355C, SEP. 1989) |
| Hard disk | WD-3158 (120 Mb), 3.5" half-height |
Trivia
| Acquisition | Summer 98, paid a few $ together w. other appliances |
| Condition | Very good, setup needed |
| Installed O.S. | IBM OS/2 2.1 (Italian), hardly booting |
| Repairs/modifications | Removed 3270 emulation card, replaced battery |
| Current status | All hw working |
| Current O.S. | IBM DOS 5.0 (Italian) |
| Spare parts | Almost everything, incl. drives, planar, etc. |
Notes
I also tested this machine with a IBM Blue Lightning upgrade (486DLC2-66 MHz w. 16 Kb internal cache).
Peripherals: KEYBOARDS, MONITORS, MICES, PRINTERS
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This page was first
published on the web on Nov. 11, 2001 |