PB410 & PB420/420T (REVISION B) Motherboard Settings and Configuration
PACKARD BELL
PB410 & PB420/420T (REVISION B)
Processor | 80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
Processor Speed | 20/25/33/40/50(internal)/66(internal)MHz |
Chip Set | ACC |
Max. onboard DRAM | 36MB |
SRAM Cache | 32/128/512KB |
BIOS | Phoenix |
Dimensions | 330mm x 240mm |
I/O Options | Fax/modem daughterboard, floppy drive interface, game port, IDE interface, multi-function connector (IDE interface LED, reset, keylock, turbo switch, turbo-LED, non-turbo LED), parallel port, PS/2 keyboard port, PS/2 mouse port, serial port, VGA port, video feature connector |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
PS/2 keyboard | J1 | Floppy drive interface | J19 |
PS/2 mouse | J2 | Proprietary fax/modem daughterboard | J21 |
VGA port | J3 | External battery | J28 |
Game port | J4 | External fan power (+12V DC) | J35 |
Parallel port | J5 | Multi-function connector | J36 |
Serial port | J6 | Keylock | J37 |
Video feature connector | J10 | Speaker | J38 |
Audio interface connector (unused) | J14 | Riser card | S1 |
IDE interface | J18 |
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USER CONFIGURABLE SETTINGS | |||
Function | Jumper/Switch | Position | |
» | Onboard Game port enabled | J15 | Closed |
| Onboard Game port disabled | J15 | Open |
» | PS/2 mouse port enabled (IRQ12) | J27 | Closed |
| PS/2 mouse port disabled | J27 | Open |
» | Monitor type select color | J12 | Closed |
| Monitor type select monochrome | J12 | Open |
» | Onboard I/O ports enabled | J16 | Closed |
| Onboard I/O ports disabled | J16 | Open |
» | Hard drive boot from DOS boot block | J17 | pins 2 & 3 closed |
| Hard drive boot from custom boot block | J17 | pins 1 & 2 closed |
» | Flash BIOS write protect enabled | J20 | Open |
| Flash BIOS write protect disabled | J20 | Closed |
» | Onboard battery enabled | J24 | Closed |
| Onboard battery disabled | J24 | Open |
» | Speaker select internal | J39 | pins 1 & 2 closed |
| Speaker select external | J39 | pins 2 & 3 closed |
Note: Parallel port, serial port, floppy drive interface, and IDE interface are configured through the BIOS setup options. J20 is only a trace, and has not been implemented in any production models of the board. | |||
DRAM CONFIGURATION (NO MEMORY SOLDERED TO BOARD) | |
Size | Bank 0 |
2MB | (1) 512K x 36 |
4MB | (1) 1M x 36 |
8MB | (1) 2M x 36 |
16MB | (1) 4M x 36 |
32MB | (1) 8M x 36 |
DRAM CONFIGURATION (4MB OF MEMORY SOLDERED TO BOARD) | |||
Size | Bank 0 | Parity 0 (P0) | Bank 1 |
4MB | (8) 441000 | (1) 441000 | NONE |
6MB | (8) 441000 | (1) 441000 | (1) 512K x 36 |
8MB | (8) 441000 | (1) 441000 | (1) 1M x 36 |
12MB | (8) 441000 | (1) 441000 | (1) 2M x 36 |
20MB | (8) 441000 | (1) 441000 | (1) 4M x 36 |
36MB | (8) 441000 | (1) 441000 | (1) 8M x 36 |
Note:Bank 0 is soldered to the board. | |||
ONBOARD VIDEO CONFIGURATION | ||||
Onboard Video | IRQ | J11 | J22 | |
» | Enabled | IRQ9 | pins 2 & 3 closed | Closed |
| Enabled | None | pins 2 & 3 closed | Open |
| Disabled | N/A | pins 1 & 2 closed | N/A |
VRAM CONFIGURATION | |||
Size | Bank 0 (U23) | Bank 1 (U20) | Bank 1 (U22) |
512KB | (1) 256K x 16 DIP | NONE | NONE |
1MB factory installed | (1) 256K x 16 DIP | NONE | (1) 256K x 16 DIP |
1MB user installed | (1) 256K x 16 DIP | (1) 256K x 16 ZIP | NONE |
Note:If board is factory installed with 1MB of VRAM, a second 256K x 16 DIP will soldered on the board at U22. If board is factory configured with 512KB of VRAM, U22 will only be a trace, and a 40-pin ZIP socket will be installed at location U20. If the ZIP socket is present, there will also be traces for 2 additional zip sockets at U14 and U16. Sockets installed on ZIP socket traces will not function. | |||
PARALLEL PORT IRQ CONFIGURATION | ||
IRQ | J13 | |
» | IRQ7 | pins 1 & 2 closed |
| IRQ5 | pins 2 & 3 closed |
CPU TYPE CONFIGURATION | ||||
CPU | Type | Location | J29 | J34 |
80486SX | PQFP | U47 | Open | pins 1 & 3, 2 & 4 |
80487SX | PGA | U45 | Open | pins 1 & 3, 2 & 4 |
80486DX | PGA | U45 | Open | pins 3 & 5, 4 & 6 |
ODPR486SX-25MHz | PGA | U45 | Closed | pins 3 & 5, 4 & 6 |
ODP486SX-33MHz | PGA | U45 | Closed | pins 1 & 3, 4 & 6 |
80486DX2 | PGA | U45 | Closed | pins 3 & 5, 4 & 6 |
Note:Pins designated should be in the closed position. | ||||
CPU SPEED CONFIGURATION | |||
Speed | J23 | J25 | J26 |
20MHz | Closed | Open | Open |
25/50i MHz | Open | Closed | Closed |
33/66i MHz | Open | Closed | Open |
40MHz | Open | Open | Closed |
CACHE CONFIGURATION | |||
Size | Cache | TAG | |
» | 32KB | (4) 8K x 8 | (1) 8K x 8 |
| 128KB | (4) 32K x 8 | (1) 32K x 8 |
| 512KB | (4) 128K x 8 | (1) 128K x 8 |
CACHE JUMPER CONFIGURATION | |||||
Size | J30 | J31 | J32 | J33 | |
» | 32KB | Open | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
| 128KB | Closed | pins 2 & 3 closed | pins 2 & 3 closed | pins 1 & 2 closed |
| 512KB | Closed | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed |
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