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Packard Bell 22/23 M/Board

Specification

  • Battery : 3.6V DC Lithium (removable)
  • BIOS : 128 KB - Phoenix BIOS V1.01.08
  • Bus Architecture : ISA based system bus
  • Cache : 8 KB Internal (Level 1) Cache Write Through External (Level 2)
  • CPU : Intel 486 processor
  • Interfaces :
    • 1 DB-25 Parallel Port
    • 2 DB-9 Serial port
    • 1 PS/2 Keyboard Port
    • 1 PS/2 mouse port
    • 1 15-pin VGA
  • RAM : 4 MB Standard on Motherboard 32 MB Maximum
  • Speaker : Piezoelectric soldered on motherboard
  • Video : Built in Oak Extended VGA

Jumpers

* Indicates default settings. For J27 the default setting depends on the original CPU configuration.

When Modem Port is Enabled (J11 JUMPED), it becomes COM1 and Serial Port 1 is disabled.

FunctionJumperDescription
Modem Select (J11)CLOSED
OPEN
* Enabled
Disabled
Mouse Select (J12)CLOSED
OPEN
* Enabled
Disabled
VGA Select (J13)1-2
3-4
* Enabled
Disabled
Serial 1 Select (J14)1-2
2-3
* COM1
COM3
Serial 2 Select (J15)1-2
2-3
* COM2
COM4
Parallel Port (J16)1-2
2-3
* LPT1
LPT2
Parallel Port IRQ (J18)1-2
2-3
* IRQ 7
IRQ 5
Interlacing (J19)CLOSED
OPEN
* Interlaced
Non-Interlaced
IDE Address (J20)1-2
2-3
* Primary
Secondary
FDD Address (J22)1-2
2-3
* Primary
Secondary
Speaker Select (J26)1-2
2-3
* Onboard
External
CPU Select (J27)486
486sx
487
486DX installed
486SX installed
487 installed
Speaker Select (J28)NC
C
* No Cache
Cache Installed

Upgrades

  • Cache : The following cache modules are supported on this system :
    • Intel Turbo Cache 485 MA (64K) (Available from Intel)
    • Intel Turbo Cache 485 MB (128K) (Available from Intel)
    • PB Cache (128K) (Available from Packard Bell)
  • Maths Co-Processor : This system supports a math co-processor. It does not support upgrade processors (ODPs and OPDRs). The CPU frequency cannot be changed. WARNING! Do not insert a 20 or 25MHz processor into a 33MHz system. See jumpers section for necessary jumper changes.
  • RAM : 32MB maximum. 256k/1MB/4MB 30 pin SIMMs, recommended speed is 80ns. No jumper changes necessary.
  • Video Memory : This system has 512k video memory soldered (not upgradeable).