Olivetti TTL 250 (M250)

Machine type XP 1530
Serial 6268414
Manufacturer Olivetti, made in Italy
Date April 1989

Physical description

Type Desktop
Dimensions (HxWxD) 110 x 410 x 405 mm
Drive bays 3 x 3.5", two accessible
Power supply 200-220VAC, 1A (4/89)

Main board

Manufacturer Olivetti
BIOS Olivetti, vers. 1.04, Jan. 20, 1989
Chipset Olivetti, Chips & Technologies
Processor Intel 80286-8 MHz (16-bit) PQFP, 0 wait states
Coprocessor Socket for optional i80287 math coprocessor (DIP)
Memory 4 sockets 30-pin SIMMs (max 120ns, to be installed in pairs)
Max memory 2 Mb (2 x 1 Mb SIMMs) on board, plus expansion cards
Bus ISA 16-bit
Expansion slots 3 x 16-bit ISA (on riser card), all available
Interface FDD (2 units), IDE HDD (2 units)
Video Integrated Paradise P-VGA adapter
Ports PS/2 keyboard, PS/2 mouse, serial (UART 16450), parallel, VGA


Installed RAM 2 x 1 Mb, 100ns SIMMs (9140)
Serial port Olivetti PC1050 IF 297 card (ISA 8-bit, 2088) ADDITION
Ethernet Olivetti GO527A adapter (10/90) ADDITION


Diskette drive 1.44 Mb, 3.5" slim-size (Panasonic JU-257, 9009)
Hard disk Conner CP346 (40 Mb) IDE/ATA, 3.5" half-height (8903)


Acquisition Oct. '02, paid 20$ (complete w. monitor, keyb., mouse, manuals & software)
Condition Excellent, working
Installed sw MS-DOS 6.22, MS Windows 3.1 (Italian)
Current status All hw working
Current O.S. Olivetti MS-DOS 4.01 (Italian)
Spare parts Parts and accessories from other Olivetti PCs


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This page was first published on the web on Dec. 27, 2002
Last revised May 25, 2004