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# HEWLETT-PACKARD COMPANY
HP VECTRA 486N PC Series
Processor 80486SX/80487SX/80486DX/80486DX2
Processor Speed 16/20/25/33/50(internal)/66(internal)MHz
Chip Set HP
Max. Onboard 48MB
DRAM
Cache None
BIOS HP
Dimensions 330mm x 218mm
I/O Options Bus mouse port, floppy interface, IDE
interface, parallel port, riser card slot,
serial ports (2), VGA port
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| VGA port | CN1 | Parallel port | CN4 |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN2 | Bus mouse | CN5 |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN3 | Riser card | S1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Switch | Position |
|----------------------------------------+--------+----------|
| » | I/O controller index select 0388h | SWA/3 | Off |
| | and data address select 0398h | | |
|---+------------------------------------+--------+----------|
| | I/O controller index select 026Fh | SWA/3 | On |
| | and data address select 026Eh | | |
|---+------------------------------------+--------+----------|
| » | ROM setup write enabled | SWA/4 | Off |
|---+------------------------------------+--------+----------|
| | ROM setup write disabled | SWA/4 | On |
|---+------------------------------------+--------+----------|
| » | IRQ12 select mouse port (CN5) | SWB/1 | Off |
|---+------------------------------------+--------+----------|
| | IRQ12 disabled | SWB/1 | On |
|---+------------------------------------+--------+----------|
| » | IRQ9 disabled | SWB/2 | Off |
|---+------------------------------------+--------+----------|
| | IRQ9 select VGA port | SWB/2 | On |
|---+------------------------------------+--------+----------|
| » | VGA port enabled | SWB/3 | Off |
|---+------------------------------------+--------+----------|
| | VGA port disabled | SWB/3 | On |
|---+------------------------------------+--------+----------|
| » | Password check enabled | SWB/4 | Off |
|---+------------------------------------+--------+----------|
| | Password check disabled (password | SWB/4 | On |
| | clear) | | |
|---+------------------------------------+--------+----------|
| » | CMOS memory normal operation | SWB/5 | Off |
|---+------------------------------------+--------+----------|
| | CMOS memory clear | SWB/5 | On |
|---+------------------------------------+--------+----------|
| » | Security mode disabled (CMOS setup | SWB/6 | Off |
| | may be changed) | | |
|---+------------------------------------+--------+----------|
| | Security mode enabled (CMOS setup | SWB/6 | On |
| | may not be changed) | | |
|---+------------------------------------+--------+----------|
| » | CPU upgrade socket disabled (CPU | SWB/8 | Off |
| | upgrade not installed) | | |
|---+------------------------------------+--------+----------|
| | CPU upgrade socket enabled (CPU | SWB/8 | On |
| | upgrade installed) | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 4MB | (1) 1M x 36 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 6MB | (1) 1M x 36 | (1) 512K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 10MB | (1) 1M x 36 | (1) 1M x 36 | (1) 512K x 36 |
|------------+---------------+---------------+---------------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 14MB | (1) 1M x 36 | (1) 2M x 36 | (1) 512K x 36 |
|------------+---------------+---------------+---------------|
| 16MB | (1) 1M x 36 | (1) 2M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 20MB | (1) 1M x 36 | (1) 2M x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 22MB | (1) 1M x 36 | (1) 4M x 36 | (1) 512K x 36 |
|------------+---------------+---------------+---------------|
| 24MB | (1) 1M x 36 | (1) 4M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 28MB | (1) 1M x 36 | (1) 4M x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 36MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | SWA/1 | SWA/2 |
|--------------------+-------------------+-------------------|
| 16MHz | Off | Off |
|--------------------+-------------------+-------------------|
| 20MHz | On | Off |
|--------------------+-------------------+-------------------|
| 25MHz | On | On |
|--------------------+-------------------+-------------------|
| 33MHz | On | On |
|--------------------+-------------------+-------------------|
| 50iMHz | On | On |
|--------------------+-------------------+-------------------|
| 66iMHz | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 512KB | NONE |
|----------------------------+-------------------------------|
| 1024KB | (4) 44256 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Size | SWB/7 |
|------------------------------+-----------------------------|
| 512KB | Of |
|------------------------------+-----------------------------|
| 1024KB | Off |
+------------------------------------------------------------+