Olivetti P500

Machine type XP-2650
Serial 8416197
Manufacturer Olivetti, made in Italy
Date May 1989

Physical description

Type Desktop
Dimensions (HxWxD) 152 x 422 x 416 mm
Drive bays 4 x 3.5" (two may be converted into one 5.25" half-height), all accessible
Power supply 140 W, 220-240VAC, 1A (04/89)

Main board

Manufacturer Olivetti, model BA827 (planar id F7FF, MCA model/submodel F800) (*)
BIOS Olivetti, 9 Oct.1989 (rev. 7E)
Chipset Chips & Technologies
Processor Intel 80386SX-16 MHz (32-bit) PQFP
Coprocessor Socket for 80387SX coprocessor
External cache N/a
Memory 4 sockets for 100ns 30-pin SIMMs (to be installed in pairs)
Max on system board 4 Mb (4 x 1 Mb)
Bus Micro Channel (MCA) 16-bit
Expansion slots 6 x 16-bit (1 w. video ext., 5 available)
Interface FDD (2 units)
Video Integrated Chips & Technologies 82C452 (rev. 5) VGA adapter
Ports PS/2 keyboard, PS/2 mouse, serial (UART 16550A), parallel, VGA


Installed RAM 4 x 1 Mb 85ns SIMMs (two Olivetti chips dated 8825, two dated 9448)
Controller WD 1006V-MC1, supports two ST-506 HDD (4588 printed on card, Olivetti sticker has 02/89)


Diskette drive 3.5" half-height, 1.44 Mb (Panasonic JU257A101P)
Hard Disk NEC D3142 (40 Mb), 3.5" half-height (DATE 1989.02)


Acquisition March 2002, gift (was going to be demolished)
Condition Very good, working
Installed O.S. IBM PC-DOS 6.30, MS Windows 3.11 (Italian)
Current status All hw working
Current O.S. Olivetti MS-DOS 4.011 (Italian)
Spare parts Floppy drive


(*) Same id as IBM PS/2 model 80 (16 MHz). An Olivetti sticker has 02/91, but chips have, at most, 8835. Possibly, in early 1991 either this main board had been repaired or replaced using an older part from late 1988.


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This page was first published on the web on Apr. 29, 2002
Last revised May 25, 2004