TYAN COMPUTER CORPORATION
S1680S
| 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 Memory | 1GB (EDO supported) | 
| Maximum Video Memory | None | 
| Cache | 256/512KB (located on Pentium Pro/Pentium II CPU) | 
| BIOS | AMI, Award | 
| Dimensions | 330mm x 218mm | 
| I/O Options | 32-bit PCI slots (5), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), IR connector, USB connectors (2), ATX power connector | 
| NPU Options | None | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| Serial port 2 | CN1 | USB connector 1 | J6 | 
| IDE interface 1 | CN2 | CPU fan power | J39 | 
| IDE interface 2 | CN3 | Keylock | J43 | 
| Floppy drive interface | CN4 | Green PC connector | J45/pins 2 & 3 | 
| Serial port 1 | CN5 | IDE interface LED | J45/pins 15 & 16 | 
| Parallel port | CN6 | Power LED | J45/pins 18 & 20 | 
| IR connector | CN7 | Reset switch | J45/pins 22 & 23 | 
| PS/2 mouse interface | J3 | Speaker | J45/pins 24 – 27 | 
| USB connector 2 | J5 | 32-bit PCI slots | PC1 – PC5 | 
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | Factory configured - do not alter | J7 | Unidentified | 
| » | Factory configured - do not alter | J8 | Unidentified | 
| » | Factory configured - do not alter | J23 | Unidentified | 
| » | Factory configured - do not alter | J28 | Unidentified | 
| » | Factory configured - do not alter | J29 | Unidentified | 
| » | Factory configured - do not alter | J30 | Unidentified | 
| » | Flash BIOS voltage select 5v | J33 | Pins 1 & 2 closed | 
| Flash BIOS voltage select 12v | J33 | Pins 2 & 3 closed | |
| » | Factory configured - do not alter | J34 | Unidentified | 
| » | CMOS memory normal operation | J36 | Open | 
| CMOS memory clear | J36 | Closed | |
| » | Factory configured - do not alter | J44 | Unidentified | 
| » | Factory configured - do not alter | J46 | Unidentified | 
| » | Factory configured - do not alter | J48 | Unidentified | 
| » | Factory configured - do not alter | J49 | Unidentified | 
| » | Factory configured - do not alter | J50 | Unidentified | 
| » | Factory configured - do not alter | J51 | Unidentified | 
| Note: The location of the following jumpers are unidentified: J7, J8, J28, J29, J30, J34 & J46. | |||
| SIMM CONFIGURATION | ||||
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | 
| 8MB | (2) 1M x 36 | None | None | None | 
| 16MB | (2) 2M x 36 | None | None | None | 
| 16MB | (2) 1M x 36 | (2) 1M x 36 | None | None | 
| 24MB | (2) 2M x 36 | (2) 1M x 36 | None | None | 
| 24MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x 36 | None | 
| 32MB | (2) 4M x 36 | None | None | None | 
| 32MB | (2) 2M x 36 | (2) 2M x 36 | None | None | 
| 32MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x 36 | 
| 40MB | (2) 4M x 36 | (2) 1M x 36 | None | None | 
| 48MB | (2) 4M x 36 | (2) 2M x 36 | None | None | 
| 48MB | (2) 2M x 36 | (2) 2M x 36 | (2) 2M x 36 | None | 
| 64MB | (2) 2M x 36 | (2) 2M x 36 | (2) 2M x 36 | (2) 2M x 36 | 
| 64MB | (2) 8M x 36 | None | None | None | 
| 64MB | (2) 4M x 36 | (2) 4M x 36 | None | None | 
| 72MB | (2) 8M x 36 | (2) 1M x 36 | None | None | 
| 80MB | (2) 8M x 36 | (2) 2M x 36 | None | None | 
| 96MB | (2) 8M x 36 | (2) 4M x 36 | None | None | 
| 96MB | (2) 4M x 36 | (2) 4M x 36 | (2) 4M x 36 | None | 
| 128MB | (2) 16M x 36 | None | None | None | 
| 128MB | (2) 8M x 36 | (2) 8M x 36 | None | None | 
| 128MB | (2) 4M x 36 | (2) 4M x 36 | (2) 4M x 36 | (2) 4M x 36 | 
| 136MB | (2) 16M x 36 | (2) 1M x 36 | None | None | 
| 144MB | (2) 16M x 36 | (2) 2M x 36 | None | None | 
| 152MB | (2) 16M x 36 | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x 36 | 
| 160MB | (2) 16M x 36 | (2) 4M x 36 | None | None | 
| 176MB | (2) 16M x 36 | (2) 2M x 36 | (2) 2M x 36 | (2) 2M x 36 | 
| 192MB | (2) 16M x 36 | (2) 8M x 36 | None | None | 
| 192MB | (2) 8M x 36 | (2) 8M x 36 | (2) 8M x 36 | None | 
| 224MB | (2) 16M x 36 | (2) 4M x 36 | (2) 4M x 36 | (2) 4M x 36 | 
| 256MB | (2) 32M x 36 | None | None | None | 
| 256MB | (2) 16M x 36 | (2) 16M x 36 | None | None | 
| 256MB | (2) 8M x 36 | (2) 8M x 36 | (2) 8M x 36 | (2) 8M x 36 | 
| 272MB | (2) 16M x 36 | (2) 16M x 36 | (2) 1M x 36 | (2) 1M x 36 | 
| 280MB | (2) 32M x 36 | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x 36 | 
| SIMM CONFIGURATION (CON’T) | ||||
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | 
| 288MB | (2) 16M x 36 | (2) 16M x 36 | (2) 2M x 36 | (2) 2M x 36 | 
| 304MB | (2) 32M x 36 | (2) 2M x 36 | (2) 2M x 36 | (2) 2M x 36 | 
| 320MB | (2) 16M x 36 | (2) 16M x 36 | (2) 4M x 36 | (2) 4M x 36 | 
| 320MB | (2) 16M x 36 | (2) 8M x 36 | (2) 8M x 36 | (2) 8M x 36 | 
| 352MB | (2) 32M x 36 | (2) 4M x 36 | (2) 4M x 36 | (2) 4M x 36 | 
| 384MB | (2) 16M x 36 | (2) 16M x 36 | (2) 16M x 36 | None | 
| 448MB | (2) 32M x 36 | (2) 8M x 36 | (2) 8M x 36 | (2) 8M x 36 | 
| 512MB | (2) 32M x 36 | (2) 32M x 36 | None | None | 
| 512MB | (2) 16M x 36 | (2) 16M x 36 | (2) 16M x 36 | (2) 16M x 36 | 
| 640MB | (2) 32M x 36 | (2) 16M x 36 | (2) 16M x 36 | (2) 16M x 36 | 
| 768MB | (2) 32M x 36 | (2) 32M x 36 | (2) 32M x 36 | None | 
| 1024MB | (2) 32M x 36 | (2) 32M x 36 | (2) 32M x 36 | (2) 32M x 36 | 
| Note: Board accepts EDO memory. | ||||
| SIMM VOLTAGE CONFIGURATION | |||||
| Voltage | J17 | J18 | J19 | J20 | |
| 3.3v | Open | Open | Open | Open | |
| » | 5v | Closed | Closed | Closed | Closed | 
| SIMM VOLTAGE CONFIGURATION (CON’T) | |||||
| Voltage | J37 | J38 | J40 | J41 | |
| 3.3v | Closed | Closed | Closed | Closed | |
| » | 5v | Open | Open | Open | Open | 
| 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 | J21 | J24 | J25 | J26 | 
| 150MHz | 60MHz | 2.5x | 3 & 4 | Open | Closed | Closed | 
| 166MHz | 66MHz | 2.5x | 1 & 2 | Open | Closed | Closed | 
| 180MHz | 60MHz | 3x | 3 & 4 | Closed | Open | Closed | 
| 200MHz | 66MHz | 3x | 1 & 2 | Closed | Open | Closed | 
| Note: Pins designated should be in the closed position. | ||||||
| CPU SPEED SELECTION (PENTIUM PRO, CON’T) | |||||
| CPU speed | Clock speed | Multiplier | J27 | J31 | J32 | 
| 150MHz | 60MHz | 2.5x | Closed | Closed | Open | 
| 166MHz | 66MHz | 2.5x | Closed | Open | Closed | 
| 180MHz | 60MHz | 3x | Closed | Closed | Open | 
| 200MHz | 66MHz | 3x | Closed | Open | Closed | 
| CPU SPEED SELECTION (PENTIUM II) | ||||||
| CPU speed | Clock speed | Multiplier | J21 | J24 | J25 | J26 | 
| 200MHz | 66MHz | 3x | 1 & 2 | Closed | Open | Closed | 
| 233MHz | 66MHz | 3.5x | 1 & 2 | Open | Open | Closed | 
| 266MHz | 66MHz | 4x | 1 & 2 | Closed | Closed | Open | 
| 300MHz | 66MHz | 4.5x | 1 & 2 | Open | Closed | Open | 
| Note: Pins designated should be in the closed position. | ||||||
| CPU SPEED SELECTION (PENTIUM II, CON’T) | |||||
| CPU speed | Clock speed | Multiplier | J27 | J31 | J32 | 
| 200MHz | 66MHz | 3x | Closed | Open | Closed | 
| 233MHz | 66MHz | 3.5x | Closed | Open | Closed | 
| 266MHz | 66MHz | 4x | Closed | Open | Closed | 
| 300MHz | 66MHz | 4.5x | Closed | Open | Closed |