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# MICRONICS COMPUTERS, INC.
TWISTER LX
Device Type Mainboard
Processor Pentium II
Processor Speed 233/266/300/333MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 768MB (EDO & SDRAM supported)
Memory
Maximum Video None
Memory
Cache 256/512KB (located on Pentium II CPU)
BIOS Award
Dimensions 254mm x 218mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
IDE interfaces (2), parallel port, PS/2 mouse
interface, serial ports (2), IR connector,
USB connectors (2), ATX power connector, AGP
slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+------------+-----------------+------------|
| AGP slot | AGP | Reset switch | J27/pins |
| | | | 22 & 23 |
|----------------+------------+-----------------+------------|
| ATX power | ATX | Speaker | J27/pins |
| connector | | | 24 - 27 |
|----------------+------------+-----------------+------------|
| IDE interface | J7 | CPU fan power | J28 |
| 1 | | | |
|----------------+------------+-----------------+------------|
| IDE interface | J8 | Chassis fan | J29 |
| 2 | | power | |
|----------------+------------+-----------------+------------|
| Floppy drive | J9 | Temperature | J31 |
| interface | | sensor | |
|----------------+------------+-----------------+------------|
| Parallel port | J13 | Chassis | J32 |
| | | intrusion | |
| | | connector | |
|----------------+------------+-----------------+------------|
| Serial port 1 | J14 | SCSI interface | J45 |
| | | LED | |
|----------------+------------+-----------------+------------|
| Serial port 2 | J15 | USB connector 1 | J46 |
|----------------+------------+-----------------+------------|
| Soft off power | J27/pins 1 | USB connector 2 | J47 |
| supply | & 2 | | |
|----------------+------------+-----------------+------------|
| IR connector | J27/pins 6 | PS/2 mouse | J49 |
| | – 10 | interface | |
|----------------+------------+-----------------+------------|
| IDE interface | J27/pins | 32-bit PCI | PC1 – PC4 |
| LED | 13 – 16 | slots | |
|----------------+------------+-----------------+------------|
| Power on LED | J27/pins | | |
| | 18 - 20 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | W1 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | W4 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | W5 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | W5 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 8MB | (1) 1M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 16MB | (1) 2M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 24MB | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 32MB | (1) 2M x 64 | (1) 2M x 64 | None |
|------------+---------------+---------------+---------------|
| 32MB | (1) 4M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 48MB | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 | None |
|------------+---------------+---------------+---------------|
| 64MB | (1) 8M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 96MB | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 128MB | (1) 8M x 64 | (1) 8M x 64 | None |
|------------+---------------+---------------+---------------|
| 128MB | (1) 16M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 136MB | (1) 16M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 144MB | (1) 16M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 144MB | (1) 16M x 64 | (1) 2M x 64 | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|----------+----------------+----------------+---------------|
| 160MB | (1) 16M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|----------+----------------+----------------+---------------|
| 160MB | (1) 16M x 64 | (1) 4M x 64 | None |
|----------+----------------+----------------+---------------|
| 192MB | (1) 16M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|----------+----------------+----------------+---------------|
| 192MB | (1) 16M x 64 | (1) 8M x 64 | None |
|----------+----------------+----------------+---------------|
| 192MB | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 |
|----------+----------------+----------------+---------------|
| 256MB | (1) 16M x 64 | (1) 8M x 64 | (1) 8M x 64 |
|----------+----------------+----------------+---------------|
| 256MB | (1) 16M x 64 | (1) 16M x 64 | None |
|----------+----------------+----------------+---------------|
| 256MB | (1) 32M x 64 | None | None |
|----------+----------------+----------------+---------------|
| 264MB | (1) 32M x 64 | (1) 1M x 64 | None |
|----------+----------------+----------------+---------------|
| 272MB | (1) 32M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|----------+----------------+----------------+---------------|
| 272MB | (1) 32M x 64 | (1) 2M x 64 | None |
|----------+----------------+----------------+---------------|
| 288MB | (1) 32M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|----------+----------------+----------------+---------------|
| 288MB | (1) 32M x 64 | (1) 4M x 64 | None |
|----------+----------------+----------------+---------------|
| 320MB | (1) 32M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|----------+----------------+----------------+---------------|
| 320MB | (1) 32M x 64 | (1) 8M x 64 | None |
|----------+----------------+----------------+---------------|
| 384MB | (1) 32M x 64 | (1) 8M x 64 | (1) 8M x 64 |
|----------+----------------+----------------+---------------|
| 384MB | (1) 32M x 64 | (1) 16M x 64 | None |
|----------+----------------+----------------+---------------|
| 384MB | (1) 16M x 64 | (1) 16M x 64 | (1) 16M x 64 |
|----------+----------------+----------------+---------------|
| 512MB | (1) 32M x 64 | (1) 16M x 64 | (1) 16M x 64 |
|----------+----------------+----------------+---------------|
| 512MB | (1) 32M x 64 | (1) 32M x 64 | None |
|----------+----------------+----------------+---------------|
| 768MB | (1) 32M x 64 | (1) 32M x 64 | (1) 32M x 64 |
|------------------------------------------------------------|
| Note: Board accepts EDO & SDRAM memory. Maximum SDRAM |
| is 384MB. Maximum EDO is 768MB. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: 256KB/512KB cache is located on the Pentium II CPU. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| W3/ | W3/ | W3/ | W3/ |
| speed | speed | | | | | |
| | | |pins 1 &|pins 3 |pins 5 |pins 7 |
| | | | 2 | & 4 | & 6 | & 8 |
|-------+--------+----------+--------+-------+-------+-------|
|233MHz | 66MHz | 3.5x | Closed |Closed | Open | Open |
|-------+--------+----------+--------+-------+-------+-------|
|266MHz | 66MHz | 4x | Closed | Open |Closed |Closed |
|-------+--------+----------+--------+-------+-------+-------|
|300MHz | 66MHz | 4.5x | Closed | Open |Closed | Open |
|-------+--------+----------+--------+-------+-------+-------|
|333MHz | 66MHz | 5x | Closed | Open | Open |Closed |
+------------------------------------------------------------+