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# DIAMOND MULTIMEDIA SYSTEMS, INC.
FASTBUS VLB
Processor 80386DX/80486SX/80487SX/80486DX/80486DX2
Processor 25/33/40/50 (internal)/50/66(internal) MHz
Speed
Chip Set C & T
Max. onboard 128MB
DRAM
Cache 64/256KB
BIOS C & T
Dimensions 330mm x 218mm
I/O Options 32-bit VESA local bus slots (2), floppy drive
interface, IDE interface, parallel port, serial
ports (2)
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | BAT1 | Reset switch | CN7 |
|------------------+----------+-------------------+----------|
| Parallel port | CN1 | Speaker | CN8 |
|------------------+----------+-------------------+----------|
| Serial port | CN2 | Turbo switch | CN9 |
| (COM1) | | | |
|------------------+----------+-------------------+----------|
| Serial port | CN3 | IDE interface LED | CN10 |
| (COM2) | | | |
|------------------+----------+-------------------+----------|
| IDE interface | CN4 | Power LED & | CN11 |
| | | keylock | |
|------------------+----------+-------------------+----------|
| Floppy drive | CN5 | 32-bit VESA local | S1 |
| interface | | bus slot | |
|------------------+----------+-------------------+----------|
| Turbo LED | CN6 | 32-bit VESA local | S2 |
| | | bus slot | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | Onboard I/O controller | J23 | Closed |
| | enabled | | |
|---+---------------------------+---------------+------------|
| | Onboard I/O controller | J23 | Open |
| | disabled | | |
|---+---------------------------+---------------+------------|
| » | CMOS memory normal | JCOM | pins 2 & 3 |
| | operation | | closed |
|---+---------------------------+---------------+------------|
| | CMOS memory clear | JCOM | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/7 | Off |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/8 | Off |
| | not alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 8M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 8M x 36 | (1) 8M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | S3 | JTAG1 | JTAG2 |
|------------+---------------+---------------+---------------|
| 64KB | 64KB module | Installed | Not installed |
|------------+---------------+---------------+---------------|
| 128KB | 256KB module | Not installed | Installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA CPU TYPE (ID0 & ID1) CONFIGURATION |
|------------------------------------------------------------|
| CPU Type | SW1/switch 1 (ID0) | SW1/2 (ID1) |
|------------------+--------------------+--------------------|
| 80386 | On | Off |
|------------------+--------------------+--------------------|
| 80486 | Off | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE (ID2) CONFIGURATION |
|------------------------------------------------------------|
| Wait states | CPU speed | SW1/3(ID2) |
|--------------------+-------------------+-------------------|
| 0 wait states | <=33MHz | Off |
|--------------------+-------------------+-------------------|
| 1 wait state | >33MHz | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA BUS SPEED (ID3) CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | SW1/4 (ID3) |
|-----------------------------+------------------------------|
| <=33MHz | Off |
|-----------------------------+------------------------------|
| >33MHz | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA ID4 CONFIGURATION |
|------------------------------------------------------------|
| Setting | SW1/5 (ID4) |
|-------------------------------+----------------------------|
| Reserved for future use | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| TYPE | JCALA | JNMI | JFERR | JIGN | JCLK | JCLK2 |
|----------+--------+--------+--------+-------+------+-------|
| AMD386 | pins 1 | Open | pins 2 | pins | pins | pins |
| | & 2 | | & 3 | 2 & 3 | 2 & | 2 & 3 |
| | | | | | 3 | |
|----------+--------+--------+--------+-------+------+-------|
| 80486SX | pins 2 | Open | pins 2 | pins | pins | pins |
| | & 3 | | & 3 | 2 & 3 | 1 & | 1 & 2 |
| | | | | | 2 | |
|----------+--------+--------+--------+-------+------+-------|
| 80487SX | pins 2 | Closed | pins 1 | pins | pins | pins |
| | & 3 | | & 2 | 1 & 2 | 1 & | 1 & 2 |
| | | | | | 2 | |
|----------+--------+--------+--------+-------+------+-------|
| 80486DX | pins 2 | Closed | pins 2 | pins | pins | pins |
| | & 3 | | & 3 | 1 & 2 | 1 & | 1 & 2 |
| | | | | | 2 | |
|----------+--------+--------+--------+-------+------+-------|
| 80486DX2 | pins 2 | Closed | pins 2 | pins | pins | pins |
| | & 3 | | & 3 | 1 & 2 | 1 & | 1 & 2 |
| | | | | | 2 | |
|------------------------------------------------------------|
| Note:AMD386 is a CPU module available from the |
| manufacturer |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| TYPE | Speed | SW2/6 |
|--------------------+--------------------+------------------|
| AMD386 | 40MHz | On |
|--------------------+--------------------+------------------|
| 80486SX | 25MHz | On |
|--------------------+--------------------+------------------|
| 80486SX | 33MHz | Off |
|--------------------+--------------------+------------------|
| 80487SX | 25MHz | On |
|--------------------+--------------------+------------------|
| 80487SX | 33MHz | Off |
|--------------------+--------------------+------------------|
| 80486DX | 25MHz | On |
|--------------------+--------------------+------------------|
| 80486DX | 33MHz | Off |
|--------------------+--------------------+------------------|
| 80486DX | 50MHz | Off |
|--------------------+--------------------+------------------|
| 80486DX2 | 50i MHz | On |
|--------------------+--------------------+------------------|
| 80486DX2 | 66i MHz | Off |
+------------------------------------------------------------+