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 | |