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Packard Bell 386 25 (Rev. D) M/Board
Specification
There are two motherboard versions. Rev. D has all simm sockets grouped together, Rev. F has them arranged in two groups.
- Battery : DS1287 soldered on Motherboard
- BIOS : 2 X 32K Phoenix BIOS Phoenix 1.10.20C1. To access setup, Ctrl+Alt+Ins
- Bus Architecture : ISA based system bus
- Cache : 64K, 35 ns
- CPU : 80C386DX-25 MHz. Keyboard Switchable Ctrl-Alt-1 = 8 MHz, Ctrl-Alt-2 = 25 MHz. Use number keys on numeric pad.
- Interfaces :
- 1 DB-25 Parallel Port
- 2 DB-9 Serial ports
- 1 Keyboard Port
- 1 Ext. VGA Conn 15 pin
- RAM : 4MB standard Maximum on Motherboard 8 MB
- Speaker : Piezoelectric, soldered on motherboard
- Video : Oak, Trident, PBVGA Multi, or SVGA
Jumpers
| Function | Jumper | Description |
|---|---|---|
| SIMM Speed | E1-E2, E4-E5 | 100ns |
| SIMM Type | E55-E56 E53-E54, E55-E56 NONE | Static Column Fast Paged Standard RAS/CAS |
| SIMM Size | E7-E8, E10-E11 E8-E9, E11-E12 | 256k SIMM 1MB SIMM |
| Total RAM | NONE E61-E63 E60-E62 E60-E62, E61-E63 | 1MB 2MB 4MB 8MB |
| ROM Size | E57-E58 E58-E59 | 64K 128K |
| Keyboard Reset | E34-E35 E35-E36 | Enabled Disabled |
| Math Coprocessor | E28-E29 E29-E30 | Installed Not Installed |
| Monitor Type | E41-E42 E40-E41 | Colour Monochrome |
| Printer Acknowledge | E16-E17 E17-E18 | Leading Edge Trailing Edge |
| Parallel Port | E13-E14 E14-E15 E19-E20 E20-E21 | LPT1 Enabled LPT1 Disabled LPT2 Enabled LPT2 Disabled |
| UNIX Mode | E37-E38 E38-E39 | UNIX System Non-UNIX |
| Serial Port | E22-E23 E23-E24 E25-E26 E26-E27 | COM1 Enabled COM1 Disabled COM2 Enabled COM2 Disabled |
Upgrades
- Battery : DS 1287 soldered on motherboard.
- Maths Co-Processor : This system supports the 80387SX-25 math co-processor. It is installed at location U41. No jumper settings are required.
- RAM : 4MB standard Maximum on Motherboard 8 MB. This board will accept RAS/CAS, Fast-Paged, or Static Column memory upto 8MB. SIMM type, either 256k or 1MB SIMMS, at a speed of 100ns. See the jumpers section for necessary jumper changes when upgrading memory.