PACKARD BELL
486 MODEL 3X3 SERIES, 4X4 SERIES
Device Type | Mainboard |
Processor | 80486SX/80486SX2/80486DX/80486DX2/P24T |
Processor Speed | 25/33/50(internal)/66(internal)MHz |
Chip Set | OPTI |
Video Chip Set | Cirrus Logic |
Maximum Onboard Memory | 64MB |
Maximum Video Memory | Unidentified |
Cache | 128/512KB |
BIOS | Phoenix |
Dimensions | 254mm x 218mm |
I/O Options | 32-bit VESA local bus slot, floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
PS/2 mouse port | J2 | IDE interface | J23 |
VGA port | J3 | IDE interface | J24 |
Parallel port | J5 | Front panel connector | J34 |
Serial port 1 | J6 | Keylock | J35 |
VGA feature connector | J14 | Chassis fan power | J38 |
Floppy drive interface | J21 | Riser slot | SL1 |
Modem connector | J22 | 32-bit VESA local bus slot | SL2 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
» | Factory configured - do not alter | J4 | Unidentified |
» | Monitor type select color | J8 | Closed |
Monitor type select monochrome | J8 | Open | |
» | VGA IRQ9 disabled | J9 | Open |
VGA IRQ9 enabled | J9 | Closed | |
» | Factory configured - do not alter | J10 | Unidentified |
» | Factory configured - do not alter | J11 | Unidentified |
» | Boot block normal operation | J17 | Pins 2 & 3 closed |
Boot block enabled | J17 | Pins 1 & 2 closed | |
» | Parity disabled | J18 | Pins 2 & 3 closed |
Parity enabled | J18 | Pins 1 & 2 closed | |
» | On board video enabled | J19 | Pins 2 & 3 closed |
On board video disabled | J19 | Pins 1 & 2 closed | |
» | On board I/O enabled | J20 | Pins 2 & 3 closed |
On board I/O disabled | J20 | Pins 1 & 2 closed | |
» | Factory configured - do not alter | J29 | Unidentified |
» | On board speaker enabled | J30 | Pins 3 & 4 closed |
On board speaker disabled | J30 | Open | |
» | LDEV# enabled | J33 | Closed |
LDEV# disabled | J33 | Open | |
» | Speaker enabled | J36 | Pins 3 & 4 closed |
Speaker disabled | J36 | Open | |
» | Factory configured - do not alter | J39 | Open |
» | Factory configured - do not alter | J40 | Unidentified |
» | Factory configured - do not alter | J41 | Unidentified |
SIMM CONFIGURATION | |||
Size | Bank 0 | Bank 1 | Bank 2 |
1MB | (1) 256K x 36 | None | 4MB |
2MB | (1) 512K x 36 | None | 4MB |
2MB | (1) 256K x 36 | (1) 256K x 36 | 4MB |
3MB | (1) 512K x 36 | (1) 256K x 36 | 4MB |
4MB | (1) 1M x 36 | None | 4MB |
4MB | (1) 512K x 36 | (1) 512K x 36 | 4MB |
5MB | (1) 1M x 36 | (1) 256K x 36 | 4MB |
6MB | (1) 1M x 36 | (1) 512K x 36 | 4MB |
8MB | (1) 2M x 36 | None | 4MB |
8MB | (1) 1M x 36 | (1) 1M x 36 | 4MB |
9MB | (1) 2M x 36 | (1) 256K x 36 | 4MB |
10MB | (1) 2M x 36 | (1) 512K x 36 | 4MB |
12MB | (1) 2M x 36 | (1) 1M x 36 | 4MB |
12MB | (1) 1M x 36 | (1) 2M x 36 | 4MB |
16MB | (1) 4M x 36 | None | 4MB |
16MB | (1) 2M x 36 | (1) 2M x 36 | 4MB |
17MB | (1) 4M x 36 | (1) 256K x 36 | 4MB |
18MB | (1) 4M x 36 | (1) 512K x 36 | 4MB |
20MB | (1) 4M x 36 | (1) 1M x 36 | 4MB |
24MB | (1) 4M x 36 | (1) 2M x 36 | 4MB |
32MB | (1) 8M x 36 | None | 4MB |
32MB | (1) 4M x 36 | (1) 4M x 36 | 4MB |
33MB | (1) 8M x 36 | (1) 256K x 36 | 4MB |
34MB | (1) 8M x 36 | (1) 512K x 36 | 4MB |
36MB | (1) 8M x 36 | (1) 1M x 36 | 4MB |
40MB | (1) 8M x 36 | (1) 2M x 36 | 4MB |
48MB | (1) 8M x 36 | (1) 4M x 36 | 4MB |
64MB | (1) 8M x 36 | (1) 8M x 36 | 4MB |
Note: If J37 is set to enabled, add 4 MB to the size column to get correct memory size. If 64MB is installed, J37 must be disabled. |
ON BOARD MEMORY CONFIGURATION | ||
Setting | J37 | |
» | Enabled | Open |
Disabled | Closed |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
128KB | (4) 32K x 8 | None | Unidentified |
512KB | (4) 64K x 8 | (4) 64K x 8 | Unidentified |
CACHE JUMPER CONFIGURATION | |
Size | J26 |
128KB | Open |
512KB | Pins 1 & 2, 3 & 4 closed |
VIDEO MEMORY CONFIGURATION |
Note: The size of the video memory is unidentified. |
CPU SPEED SELECTION | |
Speed | J25 |
25MHz | Pins 1 & 2 closed |
33MHz | Pins 2 & 3 closed |
50iMHz | Pins 1 & 2 closed |
66iMHz | Pins 2 & 3 closed |
CPU TYPE SELECTION | |
Type | J31 |
80486SX | Pins 5 & 6 closed |
80486SX2 | Pins 1 & 2, 3 & 4 closed |
80486DX | Pins 1 & 2, 3 & 4 closed |
80486DX2 | Pins 1 & 2, 3 & 4 closed |
P24T | Pins 1 & 2, 3 & 4 closed |
CPU TYPE SELECTION | |
Type | J28 |
SL enhanced | Pins 1 & 2 closed |
Non SL enhanced | Pins 2 & 3 closed |
P24T | Pins 1 & 2 closed |
CPU VOLTAGE SELECTION | ||
Voltage | J32 | |
3.3v | Pins 1 & 3, 2 & 4 closed | |
» | 5v | Pins 3 & 5, 4 & 6 closed |
DMA CHANNEL SELECTION | |||
Channel | J15 | J16 | |
» | 1 | Pins 1 & 2 closed | Pins 1 & 2 closed |
3 | Pins 2 & 3 closed | Pins 2 & 3 closed |