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Packard Bell 286X M/Board

286x Motherboard Diagram

Specification

  • Battery : 3.6 Volts. NiCad "barrel" soldered on motherboard
  • BIOS : 2 X 32Kb - Phoenix 3.10.115. To access, Ctrl+Alt+S.
  • Cache : N/A
  • Clock/Driver : Not removable , soldered on motherboard
  • Cover Removal : 1 screw , back left edge at center. 1 screw , back right edge at center
  • CPU : 80286-12 MHz. Keyboard switches : (Ctrl)-(Alt)-(+) = 6/12 MHz
  • Drive Cavities :
    • 1 x 3 half-height (enclosed)
    • 2 x 5 half-height (enclosed)
    • 1 x 3 half-height (exposed/vertical)
  • I/O Expansion slots : 3 x 16-bit ISA, 1 x 8-bit ISA
  • Interfaces :
    • 1 DB-25 Parallel Port
    • 2 RS-232C, DB-9 Serial Port
    • 1 PS/2 Keyboard Port
    • 1 PS/2 Mouse Port
  • Keyboard : 101 Key enhanced PS/2
  • Power Supply :
    • 100 W : Fuse F4A 250V, switchable 110/220V , 50/60 Hz
    • 120V:3A :60Hz:outlet 1A
    • 220V:1.5A:50Hz:outlet 0.5A
  • RAM : Standard on motherboard : 1MB. Maximum on motherboard : 4MB (Use 256Kb/1MB SIMMs 9-bit 100ns).
  • Speaker : Piezoelectric soldered on mothboard.
  • Video : VGA card on expansion slot. PBVGA Multi or SVGA. 800 x 600 , 16-bit, 256k

Jumpers

JumperFunctionPinsDescription
J7Serial Port1-2 Closed
1-2 Open
* Com1 Enabled
Com1 Disabled
  3-4 Closed
3-4 Open
* Com2 Enabled
Com2 Disabled
J14RAM Wait StateClosed
Open
* 0 Wait State
1 Wait State
J15SIMM TypeClosed
Open
* 256k x 9
1MB x 9
J16384k RelocationClosed
Open
* Disabled
Enabled
J17Parallel Port1-2
2-3
* LPT1
LPT2
J18Parallel Port IRQ1-2
2-3
IRQ5
* IRQ7
J21Floppy ControllerClosed
Open
* Enabled
Disabled
J22Display ModeClosed
Open
* Colour
Monochrome
J23IDE ControllerClosed
Open
* Enabled
Disabled

1. Parallel Port LPT1 must be set to IRQ7, LPT 2 must be set to IRQ5
2. * Indicates default settings.

Upgrades

  • Cache Memory : This system does not support cache memory.
  • Maths Co-Processor : An 80287-8 co-processor can be installed, no jumpers need to be changed.
  • RAM :

    Total
    Memory
    SIMMsJumpersExtended
    Memory
    1MBFour 256k x 9
    (Banks 0 and 1)
    J14 ON*
    J15 ON*
    J16 ON*
    384
    2MBTwo 1MB x 9
    (Bank 0)
    J14 ON*
    J15 OFF
    J16 OFF
    1408
    4MBFour 1MB x 9
    (Bank 0 and 1)
    J14 ON*
    J15 OFF
    J16 OFF
    3456

    * Default Setting
    Base Memory = 640 (always)
    J16 OFF Enables 384k Relocation, this is optional
    Recommended SIMM speed is 100ns

  • Video Memory : This system is NOT VESA compatible. This system has 256k video memory soldered (not upgradeable).