Reply PowerBoard 60/65/80

ref367.exe Turbo/Power Boards 3.67 Reference Disk
117-PB.exe 50/55/60/65/70/80 PowerBoard 1.17 BIOS

PowerBoard 60/65/80
POD Compatibility Issues

PowerBoard 60/65/80 ASSY P/N 050081 [P] | [P]

J1 Power supply connector
J3 Keyboard port
J4 40-pin floppy header
J5 40-pin IDE header
J6 Mouse port
J11 Parallel port
J12 DB25 serial port
J13 HDD15 video connector
J14 VGA Enable Jumper
J15 CPU Speed Jumper
J16 Clear CMOS Jumper
J18 Speaker connector
P1,2,4-7 32-bit MCA slot w/ MME
P8 32-bit MCA slot w/ AVE
P3 16-bit MCA slot
Q2 Linear LT1085 adjustable reg.
U1 Intel S82078-1C Floppy controller
U7 Socket 3 ZIF
U9 L2 Cache Socket
U17 ICDesigns 2028SC-B clock gen.
U20 Dallas DS1387 RTC+NVRAM
U22 Appian ADI/2 IDE controller
U23,29 flash BIOS
U24 71G0438 "System Controller"
U26 22.1184 MHz osc (UART)
U31,39-41 72-pin SIMM sockets
U36 10G4672 I/O controller
U37 Sipex SP241CCT RS232 drive/recv.
U44,45 PALs
U46,51 SOJ sockets (video RAM)
U49 LM334 current source? (Cirrus)
U50 Cirrus CL-GD5434-QC
U58,59 42S4260-70 256Kx16 DRAM (video)
U? LM386 Audio op-amp (PC Speaker)?
Y1 14.318 MHz xtal (clock gen., adapters)

J14 VGA Enable Jumper - 1-2: Planar VGA Enabled, 2-3: Planar VGA Disabled
J15 CPU Speed Jumper - ON: 25/50/75 MHz, OFF: 33/66/100 MHz
J16 Clear CMOS Jumper - CMOS configuration is cleared by switching the jumper from one position to the other. The jumper remains in its new position until the next time you decide to clear CMOS.
U17 Instead of multiple discrete oscillators this planar uses a PLL clock generator (ICDesigns 2028SC-B) to synthesize all required system clocks from a single 14.318 MHz source (Y1). The only exception is the 22.1184 MHz UART clock that is generated by a dedicated oscillator (U26).


CPU Support

486DX2/66, 486DX4/100, 586/100
CPU Socket w/ automatic voltage detection and switching.


Max on board memory: 64 MB
4 72-pin SIMM sockets, 4, 8, 16 or 32 MB, 70 ns parity SIMMs supported
Optional 128 KB write-through L2 cache (supports 256KB modules).


OS/2 identified the chipset correctly AND offers some hi-res modes, especially when you pump it up to 2 MB with the addition of two 256Kx16 SOJs. I set it up on my 17" Eizo for 800x600x64k at 72 Hz. I love it. Finally, decent video...

Video Memory: 1 MB DRAM standard, colors with optional 2 MB

640x48016M24 bits/pixel
800x60064K16 bits/pixel
1024x7682568 bits/pixel
1280x1024164 bits/pixel

The Reply setup program is different. I am still figuring how to LLF SCSI drives. Also, setup takes a while to identify and configure SCSI devices, to include SCSI adapters. I got an IBM SCSI w/cache lit up finally. Ran the IBM diagnostics on it. So I think I can just copy the *.dgs files and try again.


Controller supports 1.44 and 2.88 MB floppy drives.


Parallel: One enhanced, bi-directional w/ DMA support.
Serial: One enhanced w/ DMA support.
(This board uses the IBM 10G4672 I/O controller)

POD Compatibility Issues

I tried to install a FW and a FWSR on my PowerBoard, but I got errors where the setup program claimed the ADF on the options disk was damaged or that the ADF was not found. I took out the 83 MHz POD and used a 486DX4-100 to successfully install a BusLogic BT-646S that had failed before. Also, I had to edit the @0709 ADF because the Reply setup called it @0708 (BT-640). My SWAG is that either a timing or compatibility problem (without interposer) exists!

I ran a POD and L2 256K WB, but I got some lockups under OS/2 (that's ODD) so I pulled the L2 until a future install.

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