(TXT) View Source
# PACKARD BELL
PB450, LEGEND-CD 486SX
Processor 80486SX/SL80486SX/80486DX/SL80486DX/80486DX2/SL80486DX2/80486DX4/P24T
Processor 25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set OPTI
Video Chip Cirrus Logic
Set
Maximum 64MB
Onboard
Memory
Maximum 2MB
Video
Memory
Cache 128/512KB
BIOS Unidentified
Dimensions 254mm x 218mm
I/O Floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse
Options port, serial ports (2), VESA feature connector, VGA port, riser slot
NPU None
Options
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| PS/2 mouse port | J2 | IDE interface 1 | J24 |
|-------------------+----------+------------------+----------|
| VGA port | J3 | External battery | J30 |
|-------------------+----------+------------------+----------|
| Parallel port | J5 | Front panel | J34 |
| | | connector | |
|-------------------+----------+------------------+----------|
| Serial port 1 | J6 | Power LED & | J35 |
| | | keylock | |
|-------------------+----------+------------------+----------|
| VESA feature | J14 | Speaker | J36 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Floppy drive | J21 | Chassis fan | J38 |
| interface | | power | |
|-------------------+----------+------------------+----------|
| Serial port | J22 | Riser slot | SL1 |
| 2/modem connector | | | |
|-------------------+----------+------------------+----------|
| IDE interface 2 | J23 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Monitor type select color | J8 | Closed |
|---+---------------------------------+-------+--------------|
| | Monitor type select monochrome | J8 | Open |
|---+---------------------------------+-------+--------------|
| » | Video IRQ9 disabled | J9 | Open |
|---+---------------------------------+-------+--------------|
| | Video IRQ9 enabled | J9 | Closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J10 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J11 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Flash BIOS normal operation | J17 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS boot block enabled | J17 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | DRAM parity disabled | J18 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | DRAM 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 |
|---+---------------------------------+-------+--------------|
| | Battery type select internal | J30 | Pins 3 & 4 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Battery type select external | J30 | Closed |
|---+---------------------------------+-------+--------------|
| » | LDEV# bypass enabled | J33 | Closed |
|---+---------------------------------+-------+--------------|
| | LDEV# bypass disabled (PCI card | J33 | Open |
| | present) | | |
|---+---------------------------------+-------+--------------|
| | Speaker type select internal | J36 | Pins 3 & 4 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Speaker type select external | J36 | Closed |
|---+---------------------------------+-------+--------------|
| » | On board memory enabled | J37 | Open |
|---+---------------------------------+-------+--------------|
| | On board memory disabled | J37 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|-------------+--------------+---------------+---------------|
| 4MB | 4MB | None | None |
|-------------+--------------+---------------+---------------|
| 5MB | 4MB | (1) 256K x 36 | None |
|-------------+--------------+---------------+---------------|
| 6MB | 4MB | (1) 256K x 36 | (1) 256K x 36 |
|-------------+--------------+---------------+---------------|
| 6MB | 4MB | (1) 512K x 36 | None |
|-------------+--------------+---------------+---------------|
| 8MB | 4MB | (1) 512K x 36 | (1) 512K x 36 |
|-------------+--------------+---------------+---------------|
| 8MB | 4MB | (1) 1M x 36 | None |
|-------------+--------------+---------------+---------------|
| 12MB | 4MB | (1) 1M x 36 | (1) 1M x 36 |
|-------------+--------------+---------------+---------------|
| 12MB | 4MB | (1) 2M x 36 | None |
|-------------+--------------+---------------+---------------|
| 16MB | 4MB | (1) 2M x 36 | (1) 1M x 36 |
|-------------+--------------+---------------+---------------|
| 20MB | 4MB | (1) 2M x 36 | (1) 2M x 36 |
|-------------+--------------+---------------+---------------|
| 20MB | 4MB | (1) 4M x 36 | None |
|-------------+--------------+---------------+---------------|
| 24MB | 4MB | (1) 4M x 36 | (1) 1M x 36 |
|-------------+--------------+---------------+---------------|
| 24MB | 4MB | (1) 1M x 36 | (1) 4M x 36 |
|-------------+--------------+---------------+---------------|
| 28MB | 4MB | (1) 2M x 36 | (1) 4M x 36 |
|-------------+--------------+---------------+---------------|
| 36MB | 4MB | (1) 4M x 36 | (1) 4M x 36 |
|-------------+--------------+---------------+---------------|
| 36MB | 4MB | (1) 8M x 36 | None |
|-------------+--------------+---------------+---------------|
| 40MB | 4MB | (1) 8M x 36 | (1) 1M x 36 |
|-------------+--------------+---------------+---------------|
| 52MB | 4MB | (1) 8M x 36 | (1) 4M x 36 |
|-------------+--------------+---------------+---------------|
| 64MB | 4MB | (1) 8M x 36 | (1) 8M x 36 |
|------------------------------------------------------------|
| Note: If 64MB is installed, J37 must be closed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG0 | TAG1 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | (1) 32K x 8 | (1) 64K x 1 |
|------------+---------------+---------------+---------------|
| 512KB | (4) 128K x 8 | (1) 32K x 8 | (1) 64K x 1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J26 |
|----------------------------+-------------------------------|
| 128KB | Open |
|----------------------------+-------------------------------|
| 512KB | Pins 1 & 2, 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 2MB | (2) 256K x 16 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|----------------------------+-------------------------------|
| 75iMHz | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 100iMHz | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | J28 | J31 |
|-------------+-------------------+--------------------------|
| 80486SX | Pins 2 & 3 closed | Pins 5 & 6 closed |
|-------------+-------------------+--------------------------|
| SL80486SX | Pins 1 & 2 closed | Pins 1 & 2, 3 & 4 closed |
|-------------+-------------------+--------------------------|
| 80486DX | Pins 2 & 3 closed | Pins 1 & 2, 3 & 4 closed |
|-------------+-------------------+--------------------------|
| SL80486DX | Pins 1 & 2 closed | Pins 1 & 2, 3 & 4 closed |
|-------------+-------------------+--------------------------|
| 80486DX2 | Pins 2 & 3 closed | Pins 1 & 2, 3 & 4 closed |
|-------------+-------------------+--------------------------|
| SL80486DX2 | Pins 1 & 2 closed | Pins 1 & 2, 3 & 4 closed |
|-------------+-------------------+--------------------------|
| 80486DX4 | Pins 2 & 3 closed | Pins 1 & 2, 3 & 4 closed |
|-------------+-------------------+--------------------------|
| P24T | Pins 1 & 2 closed | Pins 1 & 2, 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU MULTIPLIER SELECTION (80486DX4 ONLY) |
|------------------------------------------------------------|
| Multiplier | J29 |
|----------------------------+-------------------------------|
| 2x | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 3x | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | J32 |
|----------------------------+-------------------------------|
| 3.3v | Pins 1 & 3, 2 & 4 closed |
|----------------------------+-------------------------------|
| 5v | Pins 3 & 5, 4 & 5 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 |
+------------------------------------------------------------+