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IBM Personal System/2 Model 80 386 (8580-A21)


Type 8580-A21
Serial 55-ADZF4
Manufacturer IBM United Kingdom Ltd.
FCC ID ANO9SA8580-111
Date September 1990

Physical description

Type Floor-standing (print inside side panel 26 4 90, print on rev of front panel 260990)
Dimensions (HxWxD) 597 x 166 (318 incl. feet) x 483 mm
Weight 23.6 Kg (8580-041)
Drive bays 2 x 3.5" half-height, 2 x 5.25" full height (1 internal)
Power supply 242 W 110-220VAC auto sense, auto-restart (WK. 36/90)

Main board

BIOS IBM, Nov. 21, 1989 (128 Kb, chips 25/4/90), planar id FFF9
Processor Intel 80386-25 MHz (32-bit), PGA
Coprocessor Intel 80387-25 MHz, PGA ADDITION
Cache 64 Kb
Cache controller Intel 82385
Memory 2 sockets for 80ns DRAM cards, parity checked (PS/2 8580 proprietary type)
Max on system board 8 Mb (2 x 4 Mb)
Max. using adapter cards 16 Mb
Bus Micro Channel (MCA) 32-bit
Expansion slots 4 x 32-bit and 4 x 16-bit (2 w. video ext.), 7 available
Interface FDD (3.5", 720 Kb or 1.44 Mb)
Video Integrated 16-bit VGA display adapter (256 Kb, max. 320x200, 256 colours or 640x480, 16 colours)
Ports PS/2 keyboard, PS/2 mouse, serial (UART 16550A), parallel, VGA

Cards

Installed RAM 2 x 4 Mb 80ns 33F5498 modules on planar (9020 and 9024 on chips), see below for memory card
Controller IBM PS/2 32-bit SCSI adapter (id 8EFE, stickers 9/8/90)
Memory IBM 32-bit 2-8 Mb 80386 expansion option (id FCFF, chip 9031) w. 4 x 2 Mb 85ns RAM SIMMs (65X6249, one 2190, two 28-90) ADDITION

Storage

Diskette drive 1.44 Mb, 3.5" half -height (Alps DFP723, 90-29)
2nd Diskette drive 1.44 Mb, 3.5" half -height (Alps DFP723, 90-29) ADDITION?
Hard disk Type WDS-3158 (120 Mb) SCSI, 3.5" half-height
2nd Hard disk Type WDS-3158 (120 Mb) SCSI, 3.5" half-height ADDITION

Trivia

Acquisition Sept. 99, paid a few $ together w. some other appliances, incl. a similar 8580-A16 which was in poor condition and had been demolished
Condition Very good, working, setup needed because of missing cards
Installed O.S. IBM OS/2 2.1 (Italian), hardly booting
Repairs/modifications Removed token-ring adapter, added two 2 Mb SIMMs to memory card (it had 2 x 2 Mb only), and 2nd hard drive (taken from mentioned 8580-A16 unit)
Current status All hw working, power supply is slightly rusty
Current IBM PC-DOS 4.00 (US English)
Spare parts Almost everything, incl. drives, planar, etc.

Peripherals: KEYBOARDS, MONITORS, MICES, PRINTERS


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This page was first published on the web on Nov. 11, 2001
Last revised Oct. 22, 2004
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