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

60/65/80 Reply Powerboard (ASSY P/N 050081)

P1,2,4-7 32 bit slots P8 32 bit AVE slot P3 16 bit slot J1 power connector J3 Keyboard J4 40 pin floppy header J5 40 pin IDE header J6 Mouse connector J11 Parallel port J12 DB25 serial port J13 HDD15 video J14 VGA Enable Jumper J15 CPU Speed Jumper J16 Clear CMOS Jumper J18 Speaker connector U1 S82078-1C U7 Socket 3 ZIF

U17 ICDesigns 2028SC-B U20 Dallas DS1387 RTC U22 Appian ADI/2 U24 71G0438 (System Controller) U26 22.1184 MHz osc U23,29 flash, even/odd U31,39-41 72 pin SIMMs U36 10G4672 U37 Sipex SP241CCT U44,45 bios? U46,51 256x16 SOJ sockets U50 Cirrus CL-GD5434-QC U58,59 NEC 42S4260-70 Q1 FR024 Q2 Linear Tech LT1085 Y1 14.318 MHz xtal

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.

Features

CPU Support

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

Memory

Max on board 64MB
4, 8, 16 or 32MB, 70ns parity SIMM Sockets Four
optional L2 cache 128K write-through (supports 256K!)

I am running 4x 8MB 70ns (32MB) right now, but when I grab some 16MB SIMMs, I'll pop it up to 64MB.

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.

Video

   OS/2 identified the chipset correctly AND offers some hi-res modes, especially when you pump it up to 2MB with the addition of two 256kx16 SOJs (cheap things, maybe $2.50 each). I set it up on my 17" Eizo for 800x600x64k at 72 Hz. I love it. Finally, decent video...

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

Resolution    Colors   Depth
    640x480    16M    24 bits/pixel 
    800x600    64K    16 bits/pixel 
  1,024x768    256     8 bits/pixel 
1,280x1,024     16     4 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.

Floppy

   Controller supports 1.44 and 2.88MB floppy drives. Presently running a 2.88MB floppy from a 95.

Ports

Parallel: One enhanced, bi-di w/DMA support
Serial: One enhanced w/DMA support.

Failure to Copy ADF, or Damaged ADFs

   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 83MHz 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- either a timing or compatibility problem (without interposer) exists. After copying an options disk, you must reinstall the POD.