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# PACKARD BELL
PB800/900 (REVISION C)
Processor 80286
Processor Speed 8/10MHz
Chip Set C & T
Max. onboard DRAM 1MB
SRAM Cache None
BIOS Phoenix
Dimensions 330mm x 240mm
I/O Options 32-bit memory expansion slot
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| External battery | BAT | 32-bit memory | S1 |
| | | expansion slot | |
|--------------------+----------+-----------------+----------|
| Diagnostics header | DIAG | Speaker | SPK |
|--------------------+----------+-----------------+----------|
| Power LED & | KLK | Turbo LED | TLD |
| keylock | | | |
|--------------------+----------+-----------------+----------|
| Reset | RST | | |
|------------------------------------------------------------|
| Note:The diagnostics header is used in preproduction, |
| and no aftermarket technical information is available |
| on its usage. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| ยป | Monitor type select color | C/M | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | Monitor type select | C/M | pins 2 & 3 |
| | monochrome | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | U17 | J19 |
|------------------+--------------------+--------------------|
| 8MHz | Empty | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 10MHz | 30-32MHz crystal | pins 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (18) 41256 | (18) 41256 |
|------------------------------------------------------------|
| Note:Banks are soldered to the board. |
+------------------------------------------------------------+