Memorex Telex 9290

Type 9590-ALG
Serial 55-2815Y
Manufacturer IBM Corp., United Kingdom Ltd. (*)
FCC ID AN09590C50
Date May 1994

Physical description

Type Desktop
Dimensions (HxWxD) 140 x 440 x 430 mm
Weight 11.4 Kg
Drive bays 3 x 3.5" half-height, 1 x 5.25" half-height (all accessible)
Power supply 194 W, 110-220VAC manual voltage switch (9418)

Main board

Chipset/Manufacturer IBM (planar id FF6F)
Bus Micro Channel (MCA) 32-bit
Expansion slots 4 x 32-bit (1 w. video ext., 2 available), one 64-bit for processor complex (proprietary), two 64-bit for memory cards (proprietary)
Interface FDD (2 units)
Video Integrated 16-bit XGA display adapter (1024x768, 16 colours; 640x480, 256 colours)
Ports PS/2 keyboard, PS/2 mouse, 2 buffered serial (UART 16550A), parallel, XGA


Type Type-2 complex (**)
BIOS IBM, Nov. 2, 1992 (92 Kb, sticker on BIOS chip 21/09/93)
Processor Intel 80486DX2-50 MHz (32-bit) PGA
Coprocessor Integraded on 486DX
Ext. Cache N/a
Max Memory 64 Mb (8 x 8 Mb) (**)
Memory 2 memory riser cards (undated), each featuring 4 sockets for 70ns 72-pin SIMMs, parity checked (PS/2 proprietary) (***)
Installed RAM 32 Mb 70ns on riser cards (2 x 8 Mb and 4 x 4 Mb SIMMs, und.)
Controller IBM 32-bit PS/2 bus master SCSI adapter/A with 512 Kb cache (id 8EFF) (sticker 06/07/93, cables 2/9/93)
Video IBM 32-bit XGA-2 graphic adpt. (id 8FDA) (sticker 07/05/93)


Diskette drive 2.88 Mb, 3.5 inch slim-height (Mitsubishi MF356F, FEB. 1994)
Hard disk Maxtor MXT-540S (540 Mb), SCSI, 3.5 inch slim-height
2nd hard disk Maxtor MXT-540S (540 Mb), SCSI, 3.5 inch slim-height ADDITION


Acquisition Summer 99, collected in a dump together w. other appliances (incl. another 9290 which was demolished)
Condition Very good, setup needed (cards pulled off)
Installed sw IBM OS/2 2.1 (Italian), not booting
Modifications Removed token-ring adapter, added second hard drive, added 2 x 8 Mb and 2 x 4 Mb memory SIMMs (it had 16 Mb only)
Current status All hw working (2nd hard drive sometimes doesn't spin up at boot), a few scratches on top cover
Current O.S. MS DOS 6.0 (US English), MS Windows for Workgroup 3.11 (Italian)
Spare parts Almost everything, incl. drives, planar, etc.


(*) This machine is in fact an IBM Enhanced Personal System/2 Model 90 XP 486.

(**) Existing processor complex can be changed with a newer one (Type-3 or 4, CPUs up to Pentium-90, supporting up to 256 Mb of RAM).

(***) Slower 80ns SIMMs can be used instead. Using a Type-2 processor complex SIMMs need not to be installed in pairs.


Back to Systems Listing
Back to PCs Main Page
Back to Home page

This page was first published on the web on Nov. 11, 2001
Last revised May 24, 2004