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# VISION TECHNOLOGIES
SIS 486-471 VL BUS, VLT MB
Processor CX486S/80486SX/SL80486SX/CX486DX/AM486DX/80486DX/AM486DXL/
SL80486DX/CX486DX2/AM486DX2/AM486DXL2/80486DX2/SL80486DX2/ 80486DX4
Processor 20/25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set SIS
Max. 128MB
Onboard
DRAM
Cache 64/128/256/512/1024KB
BIOS Award
Dimensions 330mm x 218mm
I/O 32-bit VESA local bus slots (3), green PC connector
Options
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| External battery | J1 | Speaker | J7 |
|-------------------+----------+------------------+----------|
| Green PC | J2 | Power LED & | J8 |
| connector (VGA) | | keylock | |
|-------------------+----------+------------------+----------|
| Reset switch | J4 | Green PC | JP29 |
| | | connector | |
|-------------------+----------+------------------+----------|
| Turbo LED | J5 | 32-bit VESA | SL1 - |
| | | local bus slots | SL3 |
|-------------------+----------+------------------+----------|
| Turbo switch | J6 pins | | |
| | 2 & 3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | JP20 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| | Factory configured - do not | JP21 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP30 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP35 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP38 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP38 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select | JP39 | Open |
| | monochrome/EGA/VGA | | |
|---+----------------------------------+--------+------------|
| | Monitor type select CGA | JP39 | Closed |
|---+----------------------------------+--------+------------|
| » | RC pin for break switch enabled | JP40 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | RC pin used for RC | JP40 | pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION 1 |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (4) 256K x 9 | NONE |
|------------------+--------------------+--------------------|
| 2MB | (4) 256K x 9 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 4MB | (4) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (1) 4M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (1) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (4) 8M x 9 | (1) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (4) 16M x 9 | (1) 16M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION 2 |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 1MB | (4) 256K x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 2MB | (4) 256K x 9 | (1) 256K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 4MB | (4) 1M x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 5MB | (4) 256K x 9 | (1) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 6MB | (4) 256K x 9 | (1) 256K x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 8MB | (4) 1M x 9 | (1) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 12MB | (4) 1M x 9 | (1) 1M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 16MB | (4) 4M x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 17MB | (4) 256K x 9 | (1) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 18MB | (4) 256K x 9 | (1) 256K x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 20MB | (4) 1M x 9 | (1) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 24MB | (4) 1M x 9 | (1) 1M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | (4) 4M x 9 | (1) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 34MB | (4) 256K x 9 | (1) 256K x 36 | (1) 8M x 36 |
|------------+---------------+---------------+---------------|
| 36MB | (4) 1M x 9 | (1) 4M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 40MB | (4) 1M x 9 | (1) 1M x 36 | (1) 8M x 36 |
|------------+---------------+---------------+---------------|
| 48MB | (4) 4M x 9 | (1) 4M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 48MB | (4) 4M x 9 | (1) 8M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 64MB | (4) 4M x 9 | (1) 4M x 36 | (1) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION 2 (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 64MB | (4) 16M x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 68MB | (4) 1M x 9 | (1) 8M x 36 | (1) 8M x 36 |
|------------+---------------+---------------+---------------|
| 80MB | (4) 4M x 9 | (1) 8M x 36 | (1) 8M x 36 |
|------------+---------------+---------------+---------------|
| 96MB | (4) 16M x 9 | (1) 8M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 128MB | (4) 16M x 9 | (1) 8M x 36 | (1) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION 3 |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 1MB | NONE | (1) 256K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 2MB | NONE | (1) 256K x 36 | (1) 256K x 36 |
|------------+---------------+---------------+---------------|
| 4MB | NONE | (1) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 5MB | NONE | (1) 256K x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 6MB | (4) 1M x 9 | (1) 256K x 36 | (1) 256K x 36 |
|------------+---------------+---------------+---------------|
| 8MB | NONE | (1) 1M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 8MB | NONE | (1) 2M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 12MB | (4) 1M x 9 | (1) 1M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 16MB | (4) 4M x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 16MB | NONE | (1) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 17MB | NONE | (1) 256K x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 18MB | (4) 4M x 9 | (1) 256K x 36 | (1) 256K x 36 |
|------------+---------------+---------------+---------------|
| 20MB | NONE | (1) 1M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 24MB | (4) 4M x 9 | (1) 1M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | NONE | (1) 4M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | NONE | (1) 8M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 36MB | (4) 4M x 9 | (1) 1M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 36MB | NONE | (1) 1M x 36 | (1) 8M x 36 |
|------------+---------------+---------------+---------------|
| 48MB | (4) 4M x 9 | (1) 4M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 48MB | NONE | (1) 4M x 36 | (1) 8M x 36 |
|------------+---------------+---------------+---------------|
| 64MB | (4) 16M x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 72MB | (4) 16M x 9 | (1) 1M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 96MB | (4) 16M x 9 | (1) 4M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 128MB | (4) 16M x 9 | (1) 8M x 36 | (1) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Configuration | JP36 | JP37 |
|------------------+--------------------+--------------------|
| 1 | pins 1 & 2 closed | Open |
|------------------+--------------------+--------------------|
| 2 | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 3 | pins 2 & 3 closed | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|-------+--------------+--------------+----------------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
|-------+--------------+--------------+----------------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K or (1) 16K x |
| | | | 8 |
|-------+--------------+--------------+----------------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 16K x 8 |
|-------+--------------+--------------+----------------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|-------+--------------+--------------+----------------------|
| 512KB | (8) 64K x 8 | NONE | (1) 32K x 8 |
|-------+--------------+--------------+----------------------|
| 1MB | (4) 128K x 8 | (4) 128K x 8 | (1) 128K x 8 |
|------------------------------------------------------------|
| Note: The location of the TAG is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP1 | JP2 | JP3 | JP25 | JP26 | JP27 | JP28 |
|-------+------+------+------+-------+-------+------+--------|
| 64KB | 1 & | 2 & | 2 & | 1 & 2 | 1 & 2 | 1 & | Open |
| | 2 | 3 | 3, 4 | | | 2 | |
| | | | & 5 | | | | |
|-------+------+------+------+-------+-------+------+--------|
| 128KB | 2 & | 1 & | 1 & | 2 & 3 | 1 & 2 | 1 & | Open |
| | 3 | 2 | 2, 3 | | | 2 | |
| | | | & 4 | | | | |
|-------+------+------+------+-------+-------+------+--------|
| 256KB | 2 & | 2 & | 2 & | 2 & 3 | Open | Open | Closed |
| | 3 | 3 | 3, 4 | | | | |
| | | | & 5 | | | | |
|-------+------+------+------+-------+-------+------+--------|
| 256KB | 2 & | 2 & | 2 & | 2 & 3 | 2 & 3 | 1 & | Open |
| | 3 | 3 | 3, 4 | | | 2 | |
| | | | & 5 | | | | |
|-------+------+------+------+-------+-------+------+--------|
| 512KB | 2 & | 1 & | 1 & | 2 & 3 | 2 & 3 | 2 & | Open |
| | 3 | 2 | 2, 3 | | | 3 | |
| | | | & 4 | | | | |
|-------+------+------+------+-------+-------+------+--------|
| 1MB | 2 & | 2 & | 2 & | 2 & 3 | 2 & 3 | 2 & | Open |
| | 3 | 3 | 3, 4 | | | 3 | |
| | | | & 5 | | | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP4 | JP5 | JP6 | JP7 | JP8 |
|-------------+-------+-------+-------+--------------+-------|
| CX486SX | Open | Open | Open | 2 & 3 | 2 & 3 |
|-------------+-------+-------+-------+--------------+-------|
| 80486SX | Open | Open | Open | 3 & 4 | Open |
|-------------+-------+-------+-------+--------------+-------|
| SL80486SX | Open | Open | Open | 1 & 2, 3 & 4 | Open |
|-------------+-------+-------+-------+--------------+-------|
| CX486DX | Open | Open | Open | 1 & 2, 3 & 4 | 2 & 3 |
|-------------+-------+-------+-------+--------------+-------|
| 80486DX | Open | Open | Open | 1 & 2, 3 & 4 | Open |
|-------------+-------+-------+-------+--------------+-------|
| SL80486DX | Open | Open | Open | 1 & 2, 3 & 4 | Open |
|-------------+-------+-------+-------+--------------+-------|
| CX486DX2-66 | Open | Open | Open | 1 & 2, 3 & 4 | 2 & 3 |
|-------------+-------+-------+-------+--------------+-------|
| CX486DX2-80 | Open | Open | Open | 1 & 2, 3 & 4 | 2 & 3 |
|-------------+-------+-------+-------+--------------+-------|
| AM486DX2 | Open | Open | Open | 1 & 2, 3 & 4 | Open |
|-------------+-------+-------+-------+--------------+-------|
| AM486DXL2 | Open | Open | Open | 1 & 2, 3 & 4 | Open |
|-------------+-------+-------+-------+--------------+-------|
| 80486DX2 | Open | Open | Open | 1 & 2, 3 & 4 | Open |
|-------------+-------+-------+-------+--------------+-------|
| SL80486DX2 | Open | Open | Open | 1 & 2, 3 & 4 | Open |
|-------------+-------+-------+-------+--------------+-------|
| 80486DX4 | Open | Open | Open | 1 & 2, 3 & 4 | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP9 | JP10 | JP11 | JP12 | JP13 |
|-------------+-------+-------+-------+-----------+----------|
| CX486SX | 2 & 3 | 1 & 2 | 2 & 3 | Open | 1 & 2, 3 |
| | | | | | & 4 |
|-------------+-------+-------+-------+-----------+----------|
| 80486SX | 2 & 3 | 1 & 2 | Open | Open | Open |
|-------------+-------+-------+-------+-----------+----------|
| SL80486SX | 2 & 3 | 1 & 2 | Open | Open | 2 & 3 |
|-------------+-------+-------+-------+-----------+----------|
| CX486DX | 2 & 3 | 1 & 2 | 2 & 3 | 3 & 4 | 1 & 2, 3 |
| | | | | | & 4 |
|-------------+-------+-------+-------+-----------+----------|
| 80486DX | 2 & 3 | 1 & 2 | Open | 3 & 4 | Open |
|-------------+-------+-------+-------+-----------+----------|
| SL80486DX | 2 & 3 | 1 & 2 | Open | 3 & 4 | 2 & 3 |
|-------------+-------+-------+-------+-----------+----------|
| CX486DX2-66 | 2 & 3 | 1 & 2 | 2 & 3 | 3 & 4 | 1 & 2, 3 |
| | | | | | & 4 |
|-------------+-------+-------+-------+-----------+----------|
| CX486DX2-80 | 2 & 3 | 1 & 2 | 2 & 3 | 3 & 4 | 1 & 2, 3 |
| | | | | | & 4 |
|-------------+-------+-------+-------+-----------+----------|
| AM486DX2 | 2 & 3 | 1 & 2 | Open | 3 & 4 | Open |
|-------------+-------+-------+-------+-----------+----------|
| AM486DXL2 | 2 & 3 | 2 & 3 | 3 & 4 | 1 & 2, 3 | Open |
| | | | | & 4 | |
|-------------+-------+-------+-------+-----------+----------|
| 80486DX2 | 2 & 3 | 1 & 2 | Open | 3 & 4 | Open |
|-------------+-------+-------+-------+-----------+----------|
| SL80486DX2 | 2 & 3 | 1 & 2 | Open | 3 & 4 | 2 & 3 |
|-------------+-------+-------+-------+-----------+----------|
| 80486DX4 | 2 & 3 | 1 & 2 | Open | 3 & 4 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP14 | JP15 | JP16 | JP17 | JP18 | JP19 |
|-------------+-------+------+-------+-------+--------+------|
| CX486SX | 2 & | Open | Open | 2 & 3 | Closed | 2 & |
| | 3, 4 | | | | | 3 |
| | & 5 | | | | | |
|-------------+-------+------+-------+-------+--------+------|
| 80486SX | Open | Open | Open | Open | Closed | 2 & |
| | | | | | | 3 |
|-------------+-------+------+-------+-------+--------+------|
| SL80486SX | 3 & 4 | Open | 1 & 2 | 4 & 5 | Closed | 2 & |
| | | | | | | 3 |
|-------------+-------+------+-------+-------+--------+------|
| CX486DX | 2 & | Open | Open | 2 & 3 | Closed | 2 & |
| | 3, 4 | | | | | 3 |
| | & 5 | | | | | |
|-------------+-------+------+-------+-------+--------+------|
| 80486DX | Open | Open | Open | Open | Closed | 2 & |
| | | | | | | 3 |
|-------------+-------+------+-------+-------+--------+------|
| SL80486DX | 3 & 4 | Open | 1 & 2 | 4 & 5 | Closed | 2 & |
| | | | | | | 3 |
|-------------+-------+------+-------+-------+--------+------|
| CX486DX2-66 | 2 & | Open | Open | 2 & 3 | Closed | 2 & |
| | 3, 4 | | | | | 3 |
| | & 5 | | | | | |
|-------------+-------+------+-------+-------+--------+------|
| CX486DX2-80 | 2 & 3 | Open | Open | 2 & 3 | Closed | 2 & |
| | | | | | | 3 |
|-------------+-------+------+-------+-------+--------+------|
| AM486DX2 | Open | Open | Open | Open | Closed | 2 & |
| | | | | | | 3 |
|-------------+-------+------+-------+-------+--------+------|
| AM486DXL2 | Open | Open | Open | Open | Closed | 2 & |
| | | | | | | 3 |
|-------------+-------+------+-------+-------+--------+------|
| 80486DX2 | Open | Open | Open | Open | Closed | 2 & |
| | | | | | | 3 |
|-------------+-------+------+-------+-------+--------+------|
| SL80486DX2 | 3 & 4 | Open | 1 & 2 | 4 & 5 | Closed | 2 & |
| | | | | | | 3 |
|-------------+-------+------+-------+-------+--------+------|
| 80486DX4 | 3 & 4 | Open | 1 & 2 | 4 & 5 | Open | 2 & |
| | | | | | | 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP33 | JP34 | JP41 | JP42 | JP43 |
|-------------+-------+-------+------------+--------+--------|
| CX486SX | 1 & 2 | 2 & 3 | 3 & 4, 5 & | Open | Open |
| | | | 6 | | |
|-------------+-------+-------+------------+--------+--------|
| 80486SX | 2 & 3 | 1 & 2 | 3 & 4, 5 & | Open | Open |
| | | | 6 | | |
|-------------+-------+-------+------------+--------+--------|
| SL80486SX | 2 & 3 | 1 & 2 | 3 & 4, 5 & | Open | Open |
| | | | 6 | | |
|-------------+-------+-------+------------+--------+--------|
| CX486DX | 1 & 2 | 2 & 3 | 3 & 4, 5 & | Open | Open |
| | | | 6 | | |
|-------------+-------+-------+------------+--------+--------|
| 80486DX | 2 & 3 | 1 & 2 | 3 & 4, 5 & | Open | Open |
| | | | 6 | | |
|-------------+-------+-------+------------+--------+--------|
| SL80486DX | 2 & 3 | 1 & 2 | 3 & 4, 5 & | Open | Open |
| | | | 6 | | |
|-------------+-------+-------+------------+--------+--------|
| CX486DX2-66 | 1 & 2 | 2 & 3 | 1 & 2, 3 & | Closed | Open |
| | | | 4 | | |
|-------------+-------+-------+------------+--------+--------|
| CX486DX2-80 | 1 & 2 | 2 & 3 | 1 & 2, 3 & | Closed | Open |
| | | | 4 | | |
|-------------+-------+-------+------------+--------+--------|
| AM486DX2 | 2 & 3 | 1 & 2 | 1 & 2, 3 & | Open | Closed |
| | | | 4 | | |
|-------------+-------+-------+------------+--------+--------|
| AM486DXL2 | 1 & 2 | 2 & 3 | 3 & 4, 5 & | Open | Open |
| | | | 6 | | |
|-------------+-------+-------+------------+--------+--------|
| 80486DX2 | 2 & 3 | 1 & 2 | 3 & 4, 5 & | Open | Open |
| | | | 6 | | |
|-------------+-------+-------+------------+--------+--------|
| SL80486DX2 | 2 & 3 | 1 & 2 | 3 & 4, 5 & | Open | Open |
| | | | 6 | | |
|-------------+-------+-------+------------+--------+--------|
| 80486DX4 | 2 & 3 | 1 & 2 | 1 & 2, 3 & | Closed | Open |
| | | | 4 | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION (AV9107) |
|------------------------------------------------------------|
| Speed | JP22 | JP23 | JP24 |
|---------------+--------------+--------------+--------------|
| 20MHz | Closed | Open | Closed |
|---------------+--------------+--------------+--------------|
| 25MHz | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| 33MHz | Open | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 40MHz | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 50iMHz | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| 50MHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 66iMHz | Open | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 75iMHz | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| 100iMHz | Open | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION (MX8315) |
|------------------------------------------------------------|
| Speed | JP22 | JP23 | JP24 |
|---------------+--------------+--------------+--------------|
| 20MHz | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| 25MHz | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| 33MHz | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 40MHz | Open | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 50iMHz | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| 50MHz | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 66iMHz | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 75iMHz | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| 100iMHz | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | JP31 |
|----------------------------+-------------------------------|
| 0 wait states | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 1 wait state | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP32 |
|----------------------------+-------------------------------|
| <= 33MHz | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| > 33MHz | pins 2 & 3 closed |
+------------------------------------------------------------+