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# ACHME COMPUTER, INC.
MS-4144
Processor CX476S/SL80486SX/80486SX/CX486DX/SLAMD486DX/AM486DX/SL80486DX80486DX/AM486DX2/SL80486DX2/80486DX4
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set SIS
Max. 128MB
Onboard
DRAM
Cache 128/256/512/1024KB
BIOS AMI
Dimensions 254mm x 218mm
I/O 32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel
Options port, serial ports (2)
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+-----------+----------------+------------|
| Serial port 1 | CN1 | Turbo LED | JFB1 pins |
| | | | 12 - 13 |
|------------------+-----------+----------------+------------|
| Serial port 2 | CN2 | Turbo switch | JFB1 pins |
| | | | 15 - 17 |
|------------------+-----------+----------------+------------|
| Parallel port | CN3 | Reset switch | JFB1 pins |
| | | | 19 - 20 |
|------------------+-----------+----------------+------------|
| Floppy drive | CN4 | IDE interface | JFB1 pins |
| interface | | LED | 21 & 22 |
|------------------+-----------+----------------+------------|
| IDE interface | CN5 | Green PC LED | JG1 pins 1 |
| (secondary) | | | & 2 |
|------------------+-----------+----------------+------------|
| IDE interface | CN6 | Green PC | JG1 pins 3 |
| (primary) | | connector | & 4 |
|------------------+-----------+----------------+------------|
| External battery | JBAT1 | Green PC | JG2 |
| | | connector | |
| | | (monitor) | |
|------------------+-----------+----------------+------------|
| Power LED & | JFB1 pins | Chassis fan | JFAN1 |
| keylock | 1 - 5 | power | |
|------------------+-----------+----------------+------------|
| Speaker | JFB1 pins | 32-bit PCI | PC1 - PC3 |
| | 6 - 10 | slots | |
|------------------------------------------------------------|
| Note: The location of JFAN1 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Battery type select internal | JBAT1 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Battery type select external | JBAT1 | Closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JM1 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JV1 | N/A |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+---------------+-------------+------------+----------|
| 1MB | (1) 256K x 36 | NONE | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 2MB | (1) 256K x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+---------------+-------------+------------+----------|
| 2MB | (1) 512K x 36 | NONE | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 4MB | (1) 256K x 36 | (1) 256K x | (1) 512K x | NONE |
| | | 36 | 36 | |
|------+---------------+-------------+------------+----------|
| 4MB | (1) 512K x 36 | (1) 512K x | NONE | NONE |
| | | 36 | | |
|------+---------------+-------------+------------+----------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 5MB | (1) 256K x 36 | (1) 1M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 6MB | (1) 256K x 36 | (1) 256K x | (1) 1M x | NONE |
| | | 36 | 36 | |
|------+---------------+-------------+------------+----------|
| 6MB | (1) 512K x 36 | (1) 1M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 8MB | (1) 256K x 36 | (1) 256K x | (1) 512K x | (1) 1M x |
| | | 36 | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 8MB | (1) 512K x 36 | (1) 512K x | (1) 1M x | NONE |
| | | 36 | 36 | |
|------+---------------+-------------+------------+----------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 8MB | (1) 2M x 36 | NONE | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 10MB | (1) 256K x 36 | (1) 256K x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 12MB | (1) 512K x 36 | (1) 512K x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 16MB | (1) 2M x 36 | (1) 2M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 17MB | (1) 256K x 36 | (1) 4M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 18MB | (1) 256K x 36 | (1) 256K x | (1) 4M x | NONE |
| | | 36 | 36 | |
|------+---------------+-------------+------------+----------|
| 18MB | (1) 512K x 36 | (1) 4M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 20MB | (1) 512K x 36 | (1) 512K x | (1) 4M x | NONE |
| | | 36 | 36 | |
|------+---------------+-------------+------------+----------|
| 20MB | (1) 1M x 36 | (1) 4M x 36 | NONE | NONE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 512K x | (1) 512K x | (1) 1M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 1M x 36 | (1) 1M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 2M x 36 | (1) 2M x | (1) 2M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 2M x 36 | (1) 2M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 8M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 512K x | (1) 512K x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 1M x 36 | (1) 4M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 1M x 36 | (1) 8M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 1M x 36 | (1) 1M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 1M x 36 | (1) 1M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 8M x | NONE | NONE |
| | | 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 | | | |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 8M x 36 | (1) 8M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 65MB | (1) 256K x | (1) 16M x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 68MB | (1) 1M x 36 | (1) 16M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 68MB | (1) 1M x 36 | (1) 8M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 1M x 36 | (1) 1M x | (1) 16M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 1M x 36 | (1) 1M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 4M x 36 | (1) 16M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 4M x 36 | (1) 8M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 4M x 36 | (1) 4M x | (1) 16M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 4M x 36 | (1) 4M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 16M x | (1) 16M x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|-------+--------------+--------------+----------------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K or (1) 16K or |
| | | | (1) 32K x 8 |
|-------+--------------+--------------+----------------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 16K or (1) 32K x |
| | | | 8 |
|-------+--------------+--------------+----------------------|
| 256KB | (4) 64K x 8 | NONE | (1) 16K or (1) 32K x |
| | | | 8 |
|-------+--------------+--------------+----------------------|
| 512KB | (4) 64K x 8 | (4) 64K x 8 | (1) 32K x 8 |
|-------+--------------+--------------+----------------------|
| 512KB | (4) 128K x 8 | NONE | (1) 32K x 8 |
|-------+--------------+--------------+----------------------|
| 1MB | (4) 128K x 8 | (4) 128K x 8 | (1) 64K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JS1 | JS2 | JS3 | JS4 |
|-------+------------+------------+------------+-------------|
| 128KB | pins 1 & 2 | pins 1 & 2 | Open | pins 2 & 3 |
| | closed | closed | | closed |
|-------+------------+------------+------------+-------------|
| 256KB | pins 2 & 3 | pins 1 & 2 | Open | pins 3 & 4 |
| | closed | closed | | closed |
|-------+------------+------------+------------+-------------|
| 256KB | pins 2 & 3 | pins 1 & 2 | Open | pins 1 & 2, |
| | closed | closed | | 3 & 4 |
| | | | | closed |
|-------+------------+------------+------------+-------------|
| 512KB | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | pins 3 & 4 |
| | closed | closed | closed | closed |
|-------+------------+------------+------------+-------------|
| 512KB | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | pins 1 & 2, |
| | closed | closed | closed | 3 & 4 |
| | | | | closed |
|-------+------------+------------+------------+-------------|
| 1MB | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | pins 3 & 4 |
| | closed | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JC5 | JC6 | JC7 | JC8 |
|------------+-----------------+---------------+------+------|
| CX486S | pins 3 & 4, 5 & | pins 4 & 5, 6 | Open | Open |
| | 6 closed | & 7 closed | | |
|------------+-----------------+---------------+------+------|
| SL80486SX | pins 4 & 5 | pins 6 & 7 | Open | Open |
| | closed | closed | | |
|------------+-----------------+---------------+------+------|
| 80486SX | pins 4 & 5 | pins 6 & 7 | Open | Open |
| | closed | closed | | |
|------------+-----------------+---------------+------+------|
| CX486DX | pins 3 & 4, 5 & | pins 4 & 5, 6 | Open | Open |
| | 6 closed | & 7 closed | | |
|------------+-----------------+---------------+------+------|
| SL | pins 3 & 4, 5 & | pins 4 & 5, 6 | Open | Open |
| AMD486DX | 6 closed | & 7 closed | | |
|------------+-----------------+---------------+------+------|
| AM486DX | pins 3 & 4, 5 & | pins 4 & 5, 6 | Open | Open |
| | 6 closed | & 7 closed | | |
|------------+-----------------+---------------+------+------|
| SL80486DX | pins 3 & 4, 5 & | pins 4 & 5, 6 | Open | Open |
| | 6 closed | & 7 closed | | |
|------------+-----------------+---------------+------+------|
| 80486DX | pins 3 & 4, 5 & | pins 4 & 5, 6 | Open | Open |
| | 6 closed | & 7 closed | | |
|------------+-----------------+---------------+------+------|
| AM486DX2 | pins 3 & 4, 5 & | pins 4 & 5, 6 | Open | Open |
| | 6 closed | & 7 closed | | |
|------------+-----------------+---------------+------+------|
| SL80486DX2 | pins 3 & 4, 5 & | pins 4 & 5, 6 | Open | Open |
| | 6 closed | & 7 closed | | |
|------------+-----------------+---------------+------+------|
| 80486DX2 | pins 3 & 4, 5 & | pins 4 & 5, 6 | Open | Open |
| | 6 closed | & 7 closed | | |
|------------+-----------------+---------------+------+------|
| 80486DX2 | pins 3 & 4, 5 & | pins 4 & 5, 6 | Open | Open |
| (WB) | 6 closed | & 7 closed | | |
|------------+-----------------+---------------+------+------|
| 80486DX4 | pins 3 & 4, 5 & | pins 4 & 5, 6 | Open | Open |
| | 6 closed | & 7 closed | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JC1 | JC2 | JC3 | JC4 |
|------------+-----------+-----------+-----------+-----------|
| CX486S | Not | Installed | Not | Not |
| | installed | | installed | installed |
|------------+-----------+-----------+-----------+-----------|
| SL80486SX | Installed | Not | Not | Not |
| | | installed | installed | installed |
|------------+-----------+-----------+-----------+-----------|
| 80486SX | Not | Not | Not | Not |
| | installed | installed | installed | installed |
|------------+-----------+-----------+-----------+-----------|
| CX486DX | Not | Installed | Not | Not |
| | installed | | installed | installed |
|------------+-----------+-----------+-----------+-----------|
| SL | Not | Not | Not | Not |
| AMD486DX | installed | installed | installed | installed |
|------------+-----------+-----------+-----------+-----------|
| AM486DX | Not | Not | Not | Not |
| | installed | installed | installed | installed |
|------------+-----------+-----------+-----------+-----------|
| SL80486DX | Installed | Not | Not | Not |
| | | installed | installed | installed |
|------------+-----------+-----------+-----------+-----------|
| 80486DX | Not | Not | Not | Not |
| | installed | installed | installed | installed |
|------------+-----------+-----------+-----------+-----------|
| AM486DX2 | Not | Not | Not | Not |
| | installed | installed | installed | installed |
|------------+-----------+-----------+-----------+-----------|
| SL80486DX2 | Installed | Not | Not | Not |
| | | installed | installed | installed |
|------------+-----------+-----------+-----------+-----------|
| 80486DX2 | Not | Not | Not | Not |
| | installed | installed | installed | installed |
|------------+-----------+-----------+-----------+-----------|
| 80486DX2 | Installed | Not | Installed | Not |
| (WB) | | installed | | installed |
|------------+-----------+-----------+-----------+-----------|
| 80486DX4 | Installed | Not | Not | Not |
| | | installed | installed | installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JK1 |
|-------------------------+----------------------------------|
| 25MHz | pins 7 & 8 closed |
|-------------------------+----------------------------------|
| 33MHz | pins 1 & 2, 3 & 4, 7 & 8 closed |
|-------------------------+----------------------------------|
| 40MHz | pins 3 & 4, 9 & 10 closed |
|-------------------------+----------------------------------|
| 50iMHz | pins 7 & 8 closed |
|-------------------------+----------------------------------|
| 50MHz | pins 1 & 2, 5 & 6, 9 & 10 closed |
|-------------------------+----------------------------------|
| 66iMHz | pins 1 & 2, 3 & 4, 7 & 8 closed |
|-------------------------+----------------------------------|
| 75iMHz | pins 7 & 8 closed |
|-------------------------+----------------------------------|
| 100iMHz | pins 1 & 2, 3 & 4, 7 & 8 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | jcv3 | jcv4 |
|------------+------------------------------------+----------|
| 3.45v | pins 1 & 2, 3 & 4, 5 & 6 closed | Open |
|------------+------------------------------------+----------|
| 3.8v | pins 1 & 2, 3 & 4, 5 & 6 closed | Closed |
|------------+------------------------------------+----------|
| 5v | pins 7 & 8, 9 & 10, 11 & 12 closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DACK/DRQ CONFIGURATION |
|------------------------------------------------------------|
| DACK/DRQ | JDRQ1 |
|----------------------------+-------------------------------|
| DACK1/DRQ1 | pins 1 & 2, 4 & 5 closed |
|----------------------------+-------------------------------|
| DACK3/DRQ3 | pins 2 & 3, 5 & 6 closed |
+------------------------------------------------------------+