PC Chips M-209

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PC Chips M-209
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Bus type ISA
Bus width 16-bit
Bus speed 40 MHz
8-bit ISA compatible? Yes
Manufacturer PC Chips
Chipset Hedaka D60
Compatible with AT
Connectors AT Keyboard
Requires -5VDC? Unknown
"Unknown" is not recognized as a Boolean (true/false) value.
Requires -12VDC? Unknown
"Unknown" is not recognized as a Boolean (true/false) value.
Config method Jumpers, Software
Form factor Baby AT
Power connector
CPU socket PLCC68
ISA slots 1 @ 8-bit
6 @ 16-bit
RAM slots 4 @ SIPP
Maximum RAM 16MB
16,777,216 B
Boot ROM Socket, 28-pin JEDEC, read-only
Manual Vogonsdrivers
Driver Vogonsdrivers

The PC Chips M-209 is a 286 motherboard capable of up to 20MHz operation, with hardware EMS support.


Hardware EMS

This motherboard works with the Hedaka D60 chipset drivers, which provide an EMS interface allowing a chosen amount of memory above 1MB to be accessed as EMS. Thus it is possible for this board to be configured to have conventional, EMS, XMS and Int15 extended memory available, all at the same time.


The chipset does not natively support backfilling unused parts of upper memory with UMBs. However if EMS support is not required, third party drivers can use the hardware EMS facility to make a small amount of memory available in as UMBs.

External links

  • TH99
  • Vogons forum post from a user able to run this board with 16MB RAM