TYAN COMPUTER CORPORATION
S1686D
| 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 | 305mm x 244mm | 
| I/O Options | 32-bit PCI slots (5), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), IR connectors (2), USB connectors (2), ATX power connector | 
| NPU Options | None | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| ATX power connector | ATX | USB connector 2 | J22A | 
| Serial port 2 | CN1 | CPU 2 fan power | J23 | 
| Serial port 1 | CN2 | Soft off power supply | J29/pins 1 & 2 | 
| Parallel port | CN3 | Green PC connector | J29/pins 3 & 4 | 
| Floppy drive interface | CN5 | IR connector | J29/pins 8 - 10 | 
| IDE interface 1 | CN6 | IDE interface LED | J29/pins 15 & 16 | 
| IDE interface 2 | CN7 | Power LED | J29/pins 18 - 20 | 
| IR connector | IR2 | Reset switch | J29/pins 22 & 23 | 
| PS/2 mouse port | J18 | Speaker | J29/pins 24 - 27 | 
| Chassis fan power | J19 | Wake on LAN connector | JP1 | 
| CPU 1 fan power | J20 | 32-bit PCI slots | PC1 – PC5 | 
| USB connector 1 | J22 | ||
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | CMOS memory normal operation | J44 | Open | 
| CMOS memory clear | J44 | Closed | |
| 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 | 
| SIMM CONFIGURATION (CON’T) | ||||
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | 
| 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 | 
| 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 | J13 | J14 | J15 | J16 | |
| 3.3v | Closed | Closed | Open | Open | |
| » | 5v | Open | Open | Closed | Closed | 
| SIMM VOLTAGE CONFIGURATION (CON’T) | |||||
| Voltage | J24 | J25 | J26 | J27 | |
| 3.3v | Closed | Closed | Open | Open | |
| » | 5v | Open | Open | 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 | J11 | J12 | J31 | J32 | 
| 150MHz | 60MHz | 2.5x | Open | Closed | Open | Closed | 
| 166MHz | 66MHz | 2.5x | Closed | Open | Open | Closed | 
| 180MHz | 60MHz | 3x | Open | Closed | Closed | Open | 
| 200MHz | 66MHz | 3x | Closed | Open | Closed | Open | 
| CPU SPEED SELECTION (PENTIUM PRO, CON’T) | |||||
| CPU speed | Clock speed | Multiplier | J33 | J34 | J37 | 
| 150MHz | 60MHz | 2.5x | Closed | Closed | 3 & 4 | 
| 166MHz | 66MHz | 2.5x | Closed | Closed | 1 & 2 | 
| 180MHz | 60MHz | 3x | Closed | Closed | 3 & 4 | 
| 200MHz | 66MHz | 3x | Closed | Closed | 1 & 2 | 
| Note: Pins designated should be in the closed position. | |||||
| CPU SPEED SELECTION (PENTIUM II) | ||||||
| CPU speed | Clock speed | Multiplier | J11 | J12 | J31 | J32 | 
| 200MHz | 66MHz | 3x | Closed | Open | Closed | Open | 
| 233MHz | 66MHz | 3.5x | Closed | Open | Open | Open | 
| 266MHz | 66MHz | 4x | Closed | Open | Closed | Closed | 
| 300MHz | 66MHz | 4.5x | Closed | Open | Open | Closed | 
| CPU SPEED SELECTION (PENTIUM II, CON’T) | |||||
| CPU speed | Clock speed | Multiplier | J33 | J34 | J37 | 
| 200MHz | 66MHz | 3x | Closed | Closed | 1 & 2 | 
| 233MHz | 66MHz | 3.5x | Closed | Closed | 1 & 2 | 
| 266MHz | 66MHz | 4x | Open | Closed | 1 & 2 | 
| 300MHz | 66MHz | 4.5x | Open | Closed | 1 & 2 | 
| Note: Pins designated should be in the closed position. | |||||
| SERIAL PORT SELECTION | ||
| Setting | J30 | J36 | 
| Used as serial port | Pins 1 & 2 closed | Pins 1 & 2 closed | 
| Used as IR connector | Pins 2 & 3 closed | Pins 2 & 3 closed | 
| LM78 IRQ SELECTION | ||
| IRQ | J49 | J50 | 
| 5 | Open | Pins 1 & 2 closed | 
| 7 | Open | Pins 2 & 3 closed | 
| 9 | Pins 1 & 2 closed | Open | 
| 11 | Pins 2 & 3 closed | Open |