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# TYAN COMPUTER CORPORATION
S1684SA
Device Type Mainboard
Processor Pentium Pro/Pentium II
Processor Speed 150/166/180/200/233/266/300MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 768MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB (located on Pentium Pro/Pentium II
CPU)
BIOS AMI, Award
Dimensions 305mm x 244mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
game port, green PC connector, IDE interfaces
(2), parallel port, PS/2 mouse port, serial
ports (2), IR connector, USB connectors (2),
ATX power connector, line in, line out,
microphone in, wavetable connector, audio in
– CD-ROMs (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+-------------------+-----------|
| ATX power | ATX | Modem connector | J7 |
| connector | | | |
|-----------------+----------+-------------------+-----------|
| Parallel port | CN1 | Wavetable | J14 |
| | | connector | |
|-----------------+----------+-------------------+-----------|
| Serial port 2 | CN2 | CPU fan power | J24 |
|-----------------+----------+-------------------+-----------|
| Serial port 1 | CN3 | CPU fan power | J25 |
|-----------------+----------+-------------------+-----------|
| IDE interface 2 | CN6 | CPU fan fail | J28 |
| | | warning | |
|-----------------+----------+-------------------+-----------|
| IDE interface 1 | CN7 | IDE interface LED | J39 |
|-----------------+----------+-------------------+-----------|
| Floppy drive | CN8 | Soft off power | J45 |
| interface | | supply | |
|-----------------+----------+-------------------+-----------|
| PS/2 mouse port | J2 | Keylock | J49/pins |
| | | | 4 & 5 |
|-----------------+----------+-------------------+-----------|
| USB connector 1 | J3 | Soft off power | J50/pins |
| | | supply | 1 & 2 |
|-----------------+----------+-------------------+-----------|
| USB connector 2 | J3A | Green PC | J50/pins |
| | | connector | 3 & 4 |
|-----------------+----------+-------------------+-----------|
| Audio in – | J4 | IR connector | J50/pins |
| CD-ROM (Sony) | | | 8 - 10 |
|-----------------+----------+-------------------+-----------|
| Audio in – | J5 | IDE interface LED | J50/pins |
| CD-ROM | | | 15 & 16 |
|-----------------+----------+-------------------+-----------|
| Game port | J6 | Power LED | J50/pins |
| | | | 18 - 20 |
|-----------------+----------+-------------------+-----------|
| Microphone in | J6A | Reset switch | J50/pins |
| | | | 22 & 23 |
|-----------------+----------+-------------------+-----------|
| Line in | J6B | Speaker | J50/pins |
| | | | 24 - 27 |
|-----------------+----------+-------------------+-----------|
| Line out | J6C | 32-bit PCI slots | PC1 – PC4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | CON7 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| | Serial port used as serial port | J12 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Serial port used as IR | J12 | Pins 2 & 3 |
| | connector | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J13 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J17 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J21 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J22 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J29 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Flash BIOS voltage select 5v | J36 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS voltage select 12v | J36 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J46 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J51 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | J52 | Open |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | J52 | Closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J53 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J54 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 8MB | (2) 1M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 16MB | (2) 2M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 24MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 | None |
|------------+---------------+---------------+---------------|
| 32MB | (2) 4M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 48MB | (2) 2M x 36 | (2) 2M x 36 | (2) 2M x 36 |
|------------+---------------+---------------+---------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 | None |
|------------+---------------+---------------+---------------|
| 64MB | (2) 8M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 96MB | (2) 4M x 36 | (2) 4M x 36 | (2) 4M x 36 |
|------------+---------------+---------------+---------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 | None |
|------------+---------------+---------------+---------------|
| 128MB | (2) 16M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 136MB | (2) 16M x 36 | (2) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 144MB | (2) 16M x 36 | (2) 1M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 144MB | (2) 16M x 36 | (2) 2M x 36 | None |
|------------+---------------+---------------+---------------|
| 160MB | (2) 16M x 36 | (2) 2M x 36 | (2) 2M x 36 |
|------------+---------------+---------------+---------------|
| 160MB | (2) 16M x 36 | (2) 4M x 36 | None |
|------------+---------------+---------------+---------------|
| 192MB | (2) 16M x 36 | (2) 4M x 36 | (2) 4M x 36 |
|------------+---------------+---------------+---------------|
| 192MB | (2) 16M x 36 | (2) 8M x 36 | None |
|------------+---------------+---------------+---------------|
| 192MB | (2) 8M x 36 | (2) 8M x 36 | (2) 8M x 36 |
|------------+---------------+---------------+---------------|
| 256MB | (2) 16M x 36 | (2) 8M x 36 | (2) 8M x 36 |
|------------+---------------+---------------+---------------|
| 256MB | (2) 16M x 36 | (2) 16M x 36 | None |
|------------+---------------+---------------+---------------|
| 256MB | (2) 32M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 264MB | (2) 32M x 36 | (2) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 272MB | (2) 32M x 36 | (2) 1M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 272MB | (2) 32M x 36 | (2) 2M x 36 | None |
|------------+---------------+---------------+---------------|
| 288MB | (2) 32M x 36 | (2) 2M x 36 | (2) 2M x 36 |
|------------+---------------+---------------+---------------|
| 288MB | (2) 32M x 36 | (2) 4M x 36 | None |
|------------+---------------+---------------+---------------|
| 320MB | (2) 32M x 36 | (2) 4M x 36 | (2) 4M x 36 |
|------------+---------------+---------------+---------------|
| 320MB | (2) 32M x 36 | (2) 8M x 36 | None |
|------------+---------------+---------------+---------------|
| 384MB | (2) 32M x 36 | (2) 8M x 36 | (2) 8M x 36 |
|------------+---------------+---------------+---------------|
| 384MB | (2) 32M x 36 | (2) 16M x 36 | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 384MB | (2) 16M x 36 | (2) 16M x 36 | (2) 16M x 36 |
|------------+---------------+---------------+---------------|
| 512MB | (2) 32M x 36 | (2) 16M x 36 | (2) 16M x 36 |
|------------+---------------+---------------+---------------|
| 512MB | (2) 32M x 36 | (2) 32M x 36 | None |
|------------+---------------+---------------+---------------|
| 768MB | (2) 32M x 36 | (2) 32M x 36 | (2) 32M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | J32 | J33 | J34 | J35 |
|-------------+-----------+-----------+-----------+----------|
| | 3.3v | Closed | Closed | Closed | Closed |
|---+---------+-----------+-----------+-----------+----------|
| » | 5v | Open | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM VOLTAGE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Voltage | J41 | J43 | J47 | J48 |
|-------------+-----------+-----------+-----------+----------|
| | 3.3v | Open | Open | Open | Open |
|---+---------+-----------+-----------+-----------+----------|
| » | 5v | Closed | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: 256KB/512KB cache is located on the Pentium |
| Pro/Pentium II CPU. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (PENTIUM PRO) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier| J30 | J31 | J37 | J38 |
|---------+-----------+----------+-------+------+-----+------|
| 150MHz | 60MHz | 2.5x | Open |Closed|3 & 4|Closed|
|---------+-----------+----------+-------+------+-----+------|
| 166MHz | 66MHz | 2.5x |Closed | Open |1 & 2|Closed|
|---------+-----------+----------+-------+------+-----+------|
| 180MHz | 60MHz | 3x | Open |Closed|3 & 4|Closed|
|---------+-----------+----------+-------+------+-----+------|
| 200MHz | 66MHz | 3x |Closed | Open |1 & 2|Closed|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (PENTIUM PRO, CON’T) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | J40 | J42 | J44 |
| speed | speed | | | | |
|---------+----------+------------+--------+--------+--------|
| 150MHz | 60MHz | 2.5x | Open | Closed | Closed |
|---------+----------+------------+--------+--------+--------|
| 166MHz | 66MHz | 2.5x | Open | Closed | Closed |
|---------+----------+------------+--------+--------+--------|
| 180MHz | 60MHz | 3x | Closed | Open | Closed |
|---------+----------+------------+--------+--------+--------|
| 200MHz | 66MHz | 3x | Closed | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (PENTIUM II) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier| J30 | J31 | J37 | J38 |
|---------+-----------+----------+-------+------+-----+------|
| 200MHz | 66MHz | 3x |Closed | Open |1 & 2|Closed|
|---------+-----------+----------+-------+------+-----+------|
| 233MHz | 66MHz | 3.5x | Open |Closed|3 & 4|Closed|
|---------+-----------+----------+-------+------+-----+------|
| 266MHz | 66MHz | 4x |Closed | Open |1 & 2|Closed|
|---------+-----------+----------+-------+------+-----+------|
| 300MHz | 66MHz | 4.5x | Open |Closed|3 & 4|Closed|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (PENTIUM II, CON’T) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | J40 | J42 | J44 |
| speed | speed | | | | |
|---------+----------+------------+--------+--------+--------|
| 200MHz | 66MHz | 3x | Closed | Open | Closed |
|---------+----------+------------+--------+--------+--------|
| 233MHz | 66MHz | 3.5x | Open | Open | Closed |
|---------+----------+------------+--------+--------+--------|
| 266MHz | 66MHz | 4x | Closed | Closed | Open |
|---------+----------+------------+--------+--------+--------|
| 300MHz | 66MHz | 4.5x | Open | Closed | Open |
+------------------------------------------------------------+