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# PACKARD BELL
PBVX588
Processor NEC V40 (Integrated 8088-compatible CPU and
system controller)
Processor 8MHz
Speed
Chip Set NEC
Max. Onboard 640KB
DRAM
SRAM Cache None
BIOS Award
Dimensions 355mm x 305mm
I/O Options Parallel port, serial port, video port
NPU Options 8087
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| Parallel port | P7 | Speaker | P12 |
|--------------------+----------+-----------------+----------|
| Serial port | P8 | Reset | P13 |
|--------------------+----------+-----------------+----------|
| Video port | P9 | Keylock & power | P14 |
| | | LED | |
|--------------------+----------+-----------------+----------|
| Floppy drive | P11 | | |
| interface | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|---------------------------------+---------------+----------|
| » | Monitor type select color | TOG | Left |
|---+-----------------------------+---------------+----------|
| | Monitor type select | TOG | Right |
| | monochrome | | |
|---+-----------------------------+---------------+----------|
| » | Factory test mode disabled | SW1/1 | Off |
|---+-----------------------------+---------------+----------|
| | Factory test mode enabled | SW1/1 | On |
|---+-----------------------------+---------------+----------|
| » | NPU disabled | SW1/2 | On |
|---+-----------------------------+---------------+----------|
| | NPU enabled | SW1/2 | Off |
|---+-----------------------------+---------------+----------|
| » | System speed select fast | SW1/8 | On |
| | (8MHz) | | |
|---+-----------------------------+---------------+----------|
| | System speed select slow | SW1/8 | Off |
| | (5.5 MHz) | | |
|---+-----------------------------+---------------+----------|
| » | Serial port enabled | SW1/10 | On |
|---+-----------------------------+---------------+----------|
| | Serial port disabled | SW1/10 | Off |
|---+-----------------------------+---------------+----------|
| » | Parallel port enabled | SW1/11 | On |
|---+-----------------------------+---------------+----------|
| | Parallel port disabled | SW1/11 | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOPPY DRIVE INTERFACE CONFIGURATION |
|------------------------------------------------------------|
| Mode | Drives Installed | SW1/7 | SW1/12 |
|------------------+------------------+----------+-----------|
| » | Enabled | A: | On | On |
|---+--------------+------------------+----------+-----------|
| | Enabled | A: & B: | Off | On |
|---+--------------+------------------+----------+-----------|
| | Disabled | N/A | N/A | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ONBOARD VIDEO CONFIGURATION |
|------------------------------------------------------------|
| Mode | SW1/5 | SW1/6 | SW1/9 |
|-----------------------+------------+-----------+-----------|
| | Monochrome | Off | Off | On |
|---+-------------------+------------+-----------+-----------|
| | 40x25 CGA | Off | On | On |
|---+-------------------+------------+-----------+-----------|
| » | 80x25 CGA | On | Off | On |
|---+-------------------+------------+-----------+-----------|
| | External EGA card | On | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank | Bank | SW1/3 | SW1/4 |
| | | | 2 | 3 | | |
|--------+--------+--------+-------+-------+--------+--------|
| 256KB | (8) | NONE | NONE | NONE | On | On |
| | 41256 | | | | | |
|--------+--------+--------+-------+-------+--------+--------|
| 512KB | (8) | (8) | NONE | NONE | Off | On |
| | 41256 | 41256 | | | | |
|--------+--------+--------+-------+-------+--------+--------|
| 576KB | (8) | (8) | (2) | NONE | On | Off |
| | 41256 | 41256 | 4464 | | | |
|--------+--------+--------+-------+-------+--------+--------|
| 640KB | (8) | (8) | (2) | (2) | Off | Off |
| | 41256 | 41256 | 4464 | 4464 | | |
|------------------------------------------------------------|
| Note:Parity sockets P1, P2, P3, and P4 are not used |
| and should be left open. DRAM banks are soldered to |
| the board, and should not be altered. |
+------------------------------------------------------------+