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# PACKARD BELL
PB410 & PB420/420T (REVISION C)
Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor 20/25/33/40/50(internal)/66(internal)MHz
Speed
Chip Set ACC
Max. onboard 36MB
DRAM
SRAM Cache 32/128/512KB
BIOS Phoenix
Dimensions 330mm x 240mm
I/O Options Fax/modem daughterboard, floppy drive interface,
game port, IDE interface, multi-function
connector (IDE interface LED, reset, keylock,
turbo switch, turbo-LED, non-turbo LED), parallel
port, PS/2 keyboard port, PS/2 mouse port, serial
port, VGA port, video feature connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+----------+---------------------+----------|
| PS/2 keyboard | J1 | Floppy drive | J19 |
| | | interface | |
|----------------+----------+---------------------+----------|
| PS/2 mouse | J2 | Propriatary | J21 |
| | | fax/modem | |
| | | daughterboard | |
|----------------+----------+---------------------+----------|
| VGA port | J3 | External battery | J28 |
|----------------+----------+---------------------+----------|
| Game port | J4 | External fan power | J35 |
| | | (+12V DC) | |
|----------------+----------+---------------------+----------|
| Parallel port | J5 | Multi-function | J36 |
| | | connector | |
|----------------+----------+---------------------+----------|
| Serial port | J6 | Keylock | J37 |
|----------------+----------+---------------------+----------|
| Video feature | J10 | Speaker | J38 |
| connector | | | |
|----------------+----------+---------------------+----------|
| Audio | J14 | Riser card | S1 |
| interface | | | |
| connector | | | |
| (unused) | | | |
|----------------+----------+---------------------+----------|
| IDE interface | J18 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | Onboard Game port enabled | J15 | Closed |
|---+---------------------------+---------------+------------|
| | Onboard Game port | J15 | Open |
| | disabled | | |
|---+---------------------------+---------------+------------|
| » | PS/2 mouse port enabled | J27 | Closed |
| | (IRQ12) | | |
|---+---------------------------+---------------+------------|
| | PS/2 mouse port disabled | J27 | Open |
|---+---------------------------+---------------+------------|
| » | Monitor type select color | J12 | Closed |
|---+---------------------------+---------------+------------|
| | Monitor type select | J12 | Open |
| | monochrome | | |
|---+---------------------------+---------------+------------|
| » | Onboard I/O ports enabled | J16 | Closed |
|---+---------------------------+---------------+------------|
| | Onboard I/O ports | J16 | Open |
| | disabled | | |
|---+---------------------------+---------------+------------|
| » | Hard drive boot from DOS | J17 | pins 2 & 3 |
| | boot block | | closed |
|---+---------------------------+---------------+------------|
| | Hard drive boot from | J17 | pins 1 & 2 |
| | custom boot block | | closed |
|---+---------------------------+---------------+------------|
| » | Flash BIOS write protect | J20 | Open |
| | enabled | | |
|---+---------------------------+---------------+------------|
| | Flash BIOS write protect | J20 | Closed |
| | disabled | | |
|---+---------------------------+---------------+------------|
| » | Onboard battery enabled | J24 | Closed |
|---+---------------------------+---------------+------------|
| | Onboard battery disabled | J24 | Open |
|---+---------------------------+---------------+------------|
| » | Speaker select internal | J39 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | Speaker select external | J39 | pins 2 & 3 |
| | | | closed |
|------------------------------------------------------------|
| Note:Parallel port, serial port, floppy drive |
| interface, and IDE interface are configured through |
| the BIOS setup options. |
| |
| J20 is only a trace, and has not been implimented in |
| any production models of the board. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (NO MEMORY SOLDERED TO BOARD) |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 2MB | (1) 512K x 36 |
|----------------------------+-------------------------------|
| 4MB | (1) 1M x 36 |
|----------------------------+-------------------------------|
| 8MB | (1) 2M x 36 |
|----------------------------+-------------------------------|
| 16MB | (1) 4M x 36 |
|----------------------------+-------------------------------|
| 32MB | (1) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (4MB OF MEMORY SOLDERED TO BOARD) |
|------------------------------------------------------------|
| Size | Bank 0 | Parity 0 (P0) | Bank 1 |
|-----------+---------------+----------------+---------------|
| 4MB | (8) 441000 | (1) 441000 | NONE |
|-----------+---------------+----------------+---------------|
| 6MB | (8) 441000 | (1) 441000 | (1) 512K x 36 |
|-----------+---------------+----------------+---------------|
| 8MB | (8) 441000 | (1) 441000 | (1) 1M x 36 |
|-----------+---------------+----------------+---------------|
| 12MB | (8) 441000 | (1) 441000 | (1) 2M x 36 |
|-----------+---------------+----------------+---------------|
| 20MB | (8) 441000 | (1) 441000 | (1) 4M x 36 |
|-----------+---------------+----------------+---------------|
| 36MB | (8) 441000 | (1) 441000 | (1) 8M x 36 |
|------------------------------------------------------------|
| Note:Bank 0 & parity 0 are soldered to the board. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ONBOARD VIDEO CONFIGURATION |
|------------------------------------------------------------|
| Onboard Video | IRQ | J11 | J22 |
|------------------+---------+-------------------+-----------|
| » | Enabled | IRQ9 | pins 2 & 3 closed | Closed |
|----+-------------+---------+-------------------+-----------|
| | Enabled | None | pins 2 & 3 closed | Open |
|----+-------------+---------+-------------------+-----------|
| | Disabled | N/A | pins 1 & 2 closed | N/A |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 (U23) | Bank 1 (U20) | Bank 1 (U22) |
|---------------+--------------+--------------+--------------|
| 512KB | (1) 256K x | NONE | NONE |
| | 16 DIP | | |
|---------------+--------------+--------------+--------------|
| 1MB factory | (1) 256K x | NONE | (1) 256K x |
| installed | 16 DIP | | 16 DIP |
|---------------+--------------+--------------+--------------|
| 1MB user | (1) 256K x | (1) 256K x | NONE |
| installed | 16 DIP | 16 ZIP | |
|------------------------------------------------------------|
| Note:If board is factory installed with 1MB of VRAM, |
| a second 256K x 16 DIP will soldered on the board at |
| U22. If board is factory configured with 512KB of |
| VRAM, U22 will only be a trace, and a 40-pin ZIP |
| socket will be installed at location U20. If the ZIP |
| socket is present, there will also be traces for 2 |
| additional zip sockets at U14 and U16. Sockets |
| installed on ZIP socket traces will not function. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT IRQ CONFIGURATION |
|------------------------------------------------------------|
| IRQ | J13 |
|----------------------------+-------------------------------|
| » | IRQ7 | pins 1 & 2 closed |
|----+-----------------------+-------------------------------|
| | IRQ5 | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| CPU | J29 | J34 | J40 |
|-----------------+--------+-----------------+---------------|
| 80486SX | Closed | pins 5 & 6 | pins 3 & 4 |
| | | closed | closed |
|-----------------+--------+-----------------+---------------|
| 80487SX | Closed | pins 3 & 4 | pins 1 & 2, 5 |
| | | closed | & 6 closed |
|-----------------+--------+-----------------+---------------|
| 80486DX | Closed | pins 1 & 2, 5 & | pins 1 & 2, 5 |
| | | 6 closed | & 6 closed |
|-----------------+--------+-----------------+---------------|
| ODPR486SX-25MHz | Open | pins 1 & 2, 5 & | pins 1 & 2, 5 |
| | | 6 closed | & 6 closed |
|-----------------+--------+-----------------+---------------|
| ODP486SX-33MHz | Open | pins 3 & 4 | pins 1 & 2, 5 |
| | | closed | & 6 closed |
|-----------------+--------+-----------------+---------------|
| 80486DX2 | Open | pins 1 & 2, 5 & | pins 1 & 2, 5 |
| | | 6 closed | & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | J23 | J25 | J26 |
|---------------+--------------+--------------+--------------|
| 20MHz | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 25/50i MHz | Open | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 33/66i MHz | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| 40MHz | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Cache | TAG |
|------------------+--------------------+--------------------|
| » | 32KB | (4) 8K x 8 | (1) 8K x 8 |
|---+--------------+--------------------+--------------------|
| | 128KB | (4) 32K x 8 | (1) 32K x 8 |
|---+--------------+--------------------+--------------------|
| | 512KB | (4) 128K x 8 | (1) 128K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J30 | J31 | J32 | J33 |
|-----------+--------+-------------+------------+------------|
| » | 32KB | Open | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | | | closed | closed | closed |
|---+-------+--------+-------------+------------+------------|
| | 128KB | Closed | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 |
| | | | closed | closed | closed |
|---+-------+--------+-------------+------------+------------|
| | 512KB | Closed | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | | | closed | closed | closed |
+------------------------------------------------------------+