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# ACER, INC.
ACERPOWER425SE/433E/466DE (J3 PROJECT)
Processor 80486SX/80487SX/ODP486SX/80486DX/80486DX2/Pentium
Overdrive/Pentium (depends on CPU card installed)
Processor 25/33/40/50(internal)/50/66(internal)/66MHz
Speed
Chip Set Unidentified
Max. Onboard 256MB
DRAM
Cache 64/128/256/1024KB (depends on CPU card installed)
BIOS Unidentified
Dimensions 330mm x 218mm
I/O Options External CPU card, 32-bit VESA local bus slots
(2), PS/2 mouse port
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| PS/2 mouse port | CN1 | Chassis fan | JJ1 |
| | | power | |
|--------------------+----------+-----------------+----------|
| SCSI interface LED | J5 | Chassis fan | JJ2 |
| | | power | |
|--------------------+----------+-----------------+----------|
| Speaker | J6 | 32-bit VESA | SL1 & |
| | | local bus slots | SL2 |
|--------------------+----------+-----------------+----------|
| Optional | J7 | External CPU | SL3 |
| mouse/keyboard | | slot | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | JP5 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Password disabled | JP6 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Password enabled | JP6 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP7 | Open |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP7 | Closed |
|---+----------------------------------+--------+------------|
| » | IRQ select IRQ11 | JP8 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | IRQ select IRQ10 | JP8 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Onboard buzzer enabled | JP9 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | External speaker enabled | JP9 | pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (SYSTEM BOARD) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 12MB | (1) 1M x 36 | (1) 1M x | (1) 1M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 20MB | (1) 1M x 36 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 1M x 36 | (1) 1M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 1M x 36 | (1) 4M x | (1) 1M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 28MB | (1) 1M x 36 | (1) 1M x | (1) 4M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 28MB | (1) 1M x 36 | (1) 4M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 1M x 36 | (1) 4M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 4M x 36 | (1) 4M x | (1) 1M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 1M x 36 | (1) 1M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 1M x 36 | (1) 4M x | (1) 4M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 4M x 36 | (1) 4M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 52MB | (1) 1M x 36 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 52MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 16M x | NONE | NONE | NONE |
| | 36 | | | |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 1M x 36 | (1) 1M x | (1) 16M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 4M x 36 | (1) 16M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 84MB | (1) 1M x 36 | (1) 4M x | (1) 16M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 84MB | (1) 4M x 36 | (1) 16M x | (1) 1M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 88MB | (1) 1M x 36 | (1) 1M x | (1) 4M x | (1) 16M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 88MB | (1) 4M x 36 | (1) 16M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 4M x 36 | (1) 4M x | (1) 16M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 4M x 36 | (1) 16M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 100MB | (1) 1M x 36 | (1) 4M x | (1) 4M x | (1) 16M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 100MB | (1) 4M x 36 | (1) 16M x | (1) 4M x | (1) 1M x |
| | | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (SYSTEM BOARD CON'T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 112MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 16M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 112MB | (1) 4M x 36 | (1) 16M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 16M x | (1) 16M x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 132MB | (1) 16M x | (1) 16M x | (1) 1M x | NONE |
| | 36 | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 136MB | (1) 1M x 36 | (1) 1M x | (1) 16M x | (1) 16M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 136MB | (1) 16M x | (1) 16M x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 144MB | (1) 4M x 36 | (1) 16M x | (1) 16M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 144MB | (1) 16M x | (1) 16M x | (1) 4M x | NONE |
| | 36 | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 148MB | (1) 1M x 36 | (1) 4M x | (1) 16M x | (1) 16M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 148MB | (1) 16M x | (1) 16M x | (1) 4M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 160MB | (1) 4M x 36 | (1) 4M x | (1) 16M x | (1) 16M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 160MB | (1) 4M x 36 | (1) 16M x | (1) 4M x | (1) 16M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 160MB | (1) 16M x | (1) 16M x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 192MB | (1) 16M x | (1) 16M x | (1) 16M x | NONE |
| | 36 | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 208MB | (1) 4M x 36 | (1) 16M x | (1) 16M x | (1) 16M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 208MB | (1) 16M x | (1) 16M x | (1) 4M x | (1) 16M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 256MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 16M x |
| | 36 | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | JP3 |
|----------------------------+-------------------------------|
| 0 wait states | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 1 wait state | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP4 |
|----------------------------+-------------------------------|
| <= 33MHz | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| > 33MHz | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTERNAL BATTERY CONFIGURATION |
|------------------------------------------------------------|
| Type | JP10 | JP11 | JP12 | JP13 |
|-----------+---------------+----------+----------+----------|
| Dallas | pins 2 & 3 | pins 2 & | pins 2 & | pins 2 & |
| | closed | 3 closed | 3 closed | 3 closed |
|-----------+---------------+----------+----------+----------|
| Benchmarq | pins 1 & 2 | pins 1 & | pins 1 & | pins 1 & |
| | closed | 2 closed | 2 closed | 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AIC-7770 CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP1 | JP2 |
|--------------------+-------------------+-------------------|
| Installed | Open | Open |
|--------------------+-------------------+-------------------|
| Not installed | Closed | Closed |
+------------------------------------------------------------+
IMG IMG 2
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | LADS for VLB select 33MHz | JP3 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | LADS for VLB select 50MHz | JP3 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP5 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP6 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP7 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Local bus disabled | JP10 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Local bus enabled | JP10 | pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG | TAG |
| | | | | (DIRTY) |
|--------+-------------+-------------+-----------+-----------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x | (1) 16K x |
| | | | 8 | 1 |
|--------+-------------+-------------+-----------+-----------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x | (1) 16K x |
| | | | 8 | 1 |
|--------+-------------+-------------+-----------+-----------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x | (1) 16K x |
| | | | 8 | 1 |
|--------+-------------+-------------+-----------+-----------|
| 1MB | (4) 128K x | (4) 128K x | (1) 128K | (1) 64K x |
| | 8 | 8 | x 8 | 1 |
|------------------------------------------------------------|
| Note: The orientation of the cache banks and TAG banks are |
| unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP11 | JP12 | JP13 | JP14 | JP18 | JP19 | JP20 |
|------+-------+-------+-------+-------+-------+------+------|
| 64KB | Open | Open | Open | Open | Open | Open | Open |
|------+-------+-------+-------+-------+-------+------+------|
|128KB |Closed | Open | Open | Open | Open |Closed| Open |
|------+-------+-------+-------+-------+-------+------+------|
|256KB |Closed |Closed | Open | Open | Open |Closed|Closed|
|------+-------+-------+-------+-------+-------+------+------|
| 1MB |Closed |Closed |Closed |Closed |Closed |Closed|Closed|
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE BANK CONFIGURATION |
|------------------------------------------------------------|
| Type | JP15 | JP16 |
|------------------+--------------------+--------------------|
| Single bank | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Double bank | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Type | JP1 | JP2 | JP8 | JP9 |
|--------+--------+--------+----------------+----------------|
| 25MHz | Open | Open | pins 1 & 2 | pins 1 & 2 |
| | | | closed | closed |
|--------+--------+--------+----------------+----------------|
| 33MHz | Open | Closed | pins 1 & 2 | pins 2 & 3 |
| | | | closed | closed |
|--------+--------+--------+----------------+----------------|
| 40MHz | Closed | Closed | pins 2 & 3 | pins 1 & 2 |
| | | | closed | closed |
|--------+--------+--------+----------------+----------------|
| 50iMHz | Open | Open | pins 1 & 2 | pins 1 & 2 |
| | | | closed | closed |
|--------+--------+--------+----------------+----------------|
| 50MHz | Closed | Closed | pins 2 & 3 | pins 2 & 3 |
| | | | closed | closed |
|--------+--------+--------+----------------+----------------|
| 66iMHz | Open | Closed | pins 1 & 2 | pins 2 & 3 |
| | | | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP4 |
|------------------------------+-----------------------------|
| 80486SX | pins 1 & 2 closed |
|------------------------------+-----------------------------|
| ODP486SX | pins 2 & 3 closed |
|------------------------------+-----------------------------|
| 80487SX | pins 2 & 3 closed |
|------------------------------+-----------------------------|
| 80486DX | Open |
|------------------------------+-----------------------------|
| 80486DX2 | Open |
|------------------------------+-----------------------------|
| Pentium Overdrive | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP17 |
|----------------------------+-------------------------------|
| <= 33MHz | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| > 33MHz | pins 2 & 3 closed |
+------------------------------------------------------------+
IMG IMG 3
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------+-----------+-------------------|
| » | Local bus disabled | JP4 | pins 2 & 3 closed |
|---+------------------------+-----------+-------------------|
| | Local bus enabled | JP4 | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG | TAG |
| | | | | (DIRTY) |
|--------+---------------+------------+----------+-----------|
| 256KB | (4) 32K x 8 | (4) 32K x | (1) 32K | (1) 16K x |
| | | 8 | x 8 | 1 |
|--------+---------------+------------+----------+-----------|
| 1MB | (4) 128K x 8 | (4) 128K x | (1) 32K | (1) 64K x |
| | | 8 | x 8 | 1 |
|------------------------------------------------------------|
| Note: The orientation of the cache banks and TAG |
| banks are unidentified. The location of the TAG is |
| unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP11 | JP12 | JP14 | JP15 |
|-----------+------------+-----------+-----------+-----------|
| 256KB | Open | Open | Open | Open |
|-----------+------------+-----------+-----------+-----------|
| 1MB | Closed | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU FREQUENCY CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP1 | JP2 | JP3 |
|-------+-----------------+-----------------+----------------|
| 33MHz | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 40MHz | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 50MHz | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 66MHz | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 80MHz | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
+------------------------------------------------------------+