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Packard Bell Pegasus M/Board

Pegasus Motherboard Diagram

Specification

  • Audio : On board ESS ES1869.
  • BIOS : AWARD BIOS.
  • Cache : 512 kB Pipeline Burstcache integrated on motherboard. Not upgradable.
  • Chipset : Sis 5598 ISA/PCI chip.
  • CPU Support : Socket 7 processors: Intel Pentium 90-233 MMX, Cyrix M2, AMD K6-2.
  • Expansion Slots: 1 ISA slot, 2 PCI slots, 1 shared ISA/PCI slot.
  • Form Factor : MicroATX
  • RAM : 2 DIMM sockets supporting single or double-sided SDRAM up to a maximum of 256 MB.
  • Video : Integrated in chipset, uses main RAM as video memory.

Upgrade Options


  • RAM :
    • Maximum on Motherboard: 256 MB
    • Uses 8/16/32/64/128 MB DIMMs, 60ns or faster EDO SDRAM DIMMs
    • Supports only non-parity DIMM modules.
    • The 168-pin DIMM sockets will accept 3.5 V 1 MBx64 (8 MB), 2 MBx64 (16 MB), 4 MBx64 (32 MB), 8 MBx64 (64 MB), and 16 MBx64 (128 MB) DIMMs.
    • Bank 0 will be populated as the default from the factory.
    • No configuration jumpers: BIOS detects memory size, and memory type.
    • This motherboard will not accept 36-bit DIMM modules (parity).
  • Video Memory:
    • The video controller is integrated on the motherboard and the amount of video memory (4 MB) is not upgradeable.
  • Cache Memory:
    • This system has 512 KB cache memory integrated on the motherboard and it is not upgradeable.
  • Processors :
    • Motherboard can accommodate the following CPUs: Intel P54C/P55C: 75 - 233 MHz, AMD K6: 266 MHz, AMD K6-2: 300 - 333 MHz, Cyrix MII: 266 - 333
    • When upgrading the CPU, use the CPU Clock Selection jumpers (JP14, JP15, and JP16) to set the host bus frequency and the CPU/Bus Speed Selection jumpers (JP1, JP2, and JP3) to set the clock multiplier.
Configuring the motherboard for Intel CPUs
 JP1Rest
CPUV0V1V2V3JP6SW1SW2SW3SW4SW5SW6
Pentium 90OFFOFFOFFONOFFONOFFOFFOFFOFF OFF
Pentium 100OFFOFFOFFONOFFOFFOFFOFFOFFOFF OFF
Pentium 120OFFOFFOFFONOFFONOFFOFFONOFF OFF
Pentium 133OFFOFFOFFONOFFOFFOFFOFFONOFF OFF
Pentium 150OFFOFFOFFONOFFONOFFOFFONON OFF
Pentium 166OFFOFFOFFONOFFOFFOFFOFFONON OFF
Pentium 200OFFOFFOFFONOFFOFFOFFOFFOFFON OFF
Pentium 166 MMXOFFOFFOFFONOFFOFFOFFOFFON ONOFF
Pentium 200 MMXOFFOFFOFFONOFFOFFOFFOFFOFF ONOFF
Pentium 233 MMX OFFOFFOFFONOFFOFFOFFOFFOFF OFFOFF
Configuring the motherboard for other CPUs
 JP1Rest
CPUV0V1V2V3JP6SW1SW2SW3SW4SW5 SW6
Cyrix M2 300ONOFFOFFONOFFOFFONONOFFON OFF
AMD K6-2 333OFFONOFFOFFOFFOFFOFFOFFOFFON ON
AMD K6-2 366OFFONOFFOFFOFFOFFOFFOFFOFFOFF ON

Jumpers

JumperFunctionConfiguration
JP2CMOS Clear1-2 - Normal Operation
2-3 - Clear CMOS Data
Open - Disable Battery

Onboard VGA (JP16, JP25)

JumperPinsFunction
JP161-2
2-3
Disable onboard video
Enable onboard video
JP251-2
2-3
Enable onboard video
Disable onboard video

CPU/DRAM Clock Selection

CPU/DRAM Clock
(MHz)
SW1SW2SW3
55ONONOFF
60ONOFFOFF
66OFFOFFOFF
75OFFONON

CPU/Bus Speed Ratio Select

Intel CPU/BusSW4SW5SW6
X1.5/X3.5OFFOFFOFF
X2.0ONOFFOFF
X2.5ONONOFF
X3.0OFFONOFF
X4.0ONOFFON
X4.5ONONON
X5.0OFFONON
X5.5OFFOFFON

Core Voltage - JP1

VoltageVOV1V1V3
2.1vONOFFOFFOFF
2.2vOFFONOFFOFF
2.3vONONOFFOFF
2.8vOFFOFFOFFON
2.9vONOFFOFFON
3.2vOFFOFFONON
3.3vONOFFONON
3.5vONONONON

I/O voltage - JP6

VoltageJP6
3.3vOFF
3.45vON