Ardent Tool of Capitalism

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Reference
Material		 Software
& Drivers		 IBM
Systems		 Non-IBM
Systems		 MCA
Adapters		 Parts &
Technology		 Setup &
Config

8535/8540 Planar

3540st.exe 8535/8540 Starter Disk v1.03 (zipped image)
953540st.exe 9535/9540 Starter Disk v1.00 (zipped image)
25sxstr.exe Models 25 SX, 35, 40 Advanced Diagnostics v1.30 (zipped image)
253540dg.exe Models 25 SX, 35, 40 Advanced Diagnostics v1.20 (zipped image)
40sxdiag.tg0 Model 40SX Advanced Diagnostics v1.02 (zipped image)

191-075 IBM PS/2 Model 35 SX (8535-040, 043), IBM PS/2 Model 35 LS (8535-24X)
191-199 IBM PS/2 Model 35 LS (8535-14X)
191-076 IBM PS/2 Model 40 SX (8540-040, 043, 045)

SHS84F9845 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR
SHS84F9846 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMS
SHS84F7767 IBM PS/2 Model 40 SX and 40 SLC HMS
SHS84F7768 IBM PS/2 Model 40 SX and 40 SLC HMR

8535/8540 Planar
Riser Card
System Firmware
   ROM Images

8535/8540 Planar

FRU P/N 92F0140, P/N 10G3804 [P] [P]
FRU P/N 85F0077, P/N 10G3804

F3 Keyboard / Mouse fuse
J1 Mouse port
J2 Keyboard port
J3 Parallel port
J4 DB25 serial port
J5 HD15 video connector
J6-8 72-pin SIMM socket
J9 Bus riser slot
J10 IRQ5/IRQ7 jumper
J11 Power-supply connector P1
J12 8-pin Front Panel Connector
J13 Power-supply connector P2
J14 Password-override jumper
J15 40-pin floppy connector
J16 40-pin IDE connector
LN1 Pads for filter
OS1 25 MHz osc
OS2 Pads for osc "Spare"
OS3 41.5390 MHz osc (VGA)
OS4 28.322 MHz osc (VGA)
 OS5 40.0000 MHz osc
OS6 48.0000 MHz osc
U6,13,39,42,54 "Spare"
U7 VL16C451A-QC Parallel/UART
U10 P8042AH K/B controller
U11 VLSI VL82C300-FCP
U12,34 VLSI VL82C304-QC
U16 IMSG171P-50 RAMDAC
U17 DS1287 RTC/CMOS
U18 84F7985 SVGA
U19 Even ROM BIOS
U28,30 64Kx16? DRAM (video)
U29 i387SX co-pro socket
U31 Odd ROM BIOS
U35,36 Pads for additional DRAM (video)
U38 84F9287 OKI M7U100-019
U40 64F3110 TI CF61533FN
U50 i80386SX-20 (or IBM 386SLC-20?) CPU
U52 82077AA Floppy controller
Y1 14.3 MHz xtal

Riser Card

8535: FRU P/N 79F3444, ASM P/N 79F3520 [P] [P]
8540: unknown P/N

Three (8535) or five (8540) 16-bit ISA slots.

No other significant components on the riser aside from some passives. (U1?)

System Firmware (POST & BIOS)

Firmware stored in EPROM.

ROM Images

92F1502 / 92F1503 - 04 Apr 1991, rev. 6, 2x 27C512 (U19 / U31)
04G2022 / 04G2021 - 25 Sep 1991, rev. 10, 2x 27C512 (U19 / U31)

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: 15 Jun 2025 - Changelog | About | Legal & Contact