EduQuest Forty

Type 9604

IBM's Eduquest: The Only Good 90s All-In-One (YouTube)
EduQuest Forty Photo

Planar Outline

Based on content by William R. Walsh (original HERE). Edited by Major Tom.


CPU: Intel 486SX 25 MHz (soldered), "OverDrive" socket available
RAM: 4 MB soldered


D4 Power LED
FLOPPY Floppy Connector
IDE IDE Connector
JP1 On-board video (open - disable)
JP2-5 ? (2 and 4 closed)
JP8 Reset Switch
J5 SCSI Connector
J6 Pads next to J5 (ext. SCSI header?)
OSC1 24.000MHz
OSC3 50.000MHz (CPU)
SIMM 1-4 30 Pin SIMM Sockets
U9 Music MU9C4870-80DC RAMDAC
U13 Benchmarq bq3287MT
U14 Samsung KM416C157AJ7 VRAM (512K)
U15 VLSI/Future Domain TMC-950 SCSI
U20 Intel 8042 KBC
U21 VRAM Upgrade Socket (512K)
U23 Video and System ROM BIOS
U24 Empty socket ("MASK ROM")
U38 ATI Mach32 Video Chip
U39 ROM DOS 01 - MS-DOS V5.00
U40 ROM DISK 01b (ROM DOS device drivers)
U51 Soldered Intel 80486SX-25 CPU
U53 Math-Co/Overdrive Socket
U54 VLSI VL82C486-FC2
U60-U67 Samsung KM44C1000BJ-7 (4MB)
VESA VESA Feature connector
X1 12.000MHz XTAL

20MB RAM is the maximum supported amount you can install.
4x4MB in the SIMM sockets and 4MB on the system board.

Content created and/or collected by:
Louis F. Ohland, Peter H. Wendt, David L. Beem, William R. Walsh, Tatsuo Sunagawa, Tomáš Slavotínek, Jim Shorney, Tim N. Clarke, Kevin Bowling, and many others.

Ardent Tool of Capitalism is maintained by Tomáš Slavotínek.
Last update: 08 May 2024 - Changelog | About | Legal & Contact