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Packard Bell 386 16/20 Supreme M/Board

Both versions of this mother board are shown below. The first motherboard is the new motherboard layout (386-16 & 386-20), and the second board is the old motherboard layout (386-16).

Supreme Motherboard Diagram (New Version)

Supreme Motherboard Diagram (Old Version)

Jumpers

FunctionJumper Description 
Display Type (JMP1)1-2
2-3
Colour
Monochrome
Coprocessor (JMP2 old version)1-2
2-3
Disabled
Enabled
Coprocessor (JMP2 new version)1-2
3-4
5-6
80387
None
80287
EMPROM (JMP 3 new version)1-2
2-3
256k
512k
Auxiliary IOCS16 (JMP 4 old version)1-2
2-3
Enabled
Disabled

Upgrades

  • Battery : Removable, located at J2.
  • Maths Co-Processor : This system has two variations of motherboards: A. The old variation accepts only the 80287-10 Math Co-processor at location U12. B. The new variation will accept the 80287-10, 80387DX-16 or 80387DX-20 in the appropriate Co-processor socket. JMP2 must jump 1-2 for 80387 or 5-6 for 80287.
  • RAM : 16MB maximum. Shadow BIOS and Shadow Video takes 128Kb off Extended Memory for each enabled shadow. No jumper setting required. Use 256l or 1MB SIMMS, 70ns.