SOYO COMPUTER CO., LTD. SY-30 A/B/C Processor CX486S/AM486SX/80486SX/SL80486SX/CX486DX/AM486DX/ 80486DX/SL80486DX/AM486DX2/80486DX2/SL80486DX2/ 80486DX4/P24D/P24T Processor Speed25/33/40/50(internal)/50/66(internal)MHz Chip Set Unidentified Video Chip Set None Maximum Onboard128MB Memory Maximum Video None Memory Cache 256/512/1024KB BIOS Award Dimensions 254mm x 218mm I/O Options 32-bit VESA local bus slots (2), 32-bit PCI slots (4), green PC connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Power LED & J17 Green PC connector JP6 keylock (SYNCEN) Speaker J18 Green PC connector JP7 (HSYNCH) Reset switch J19 Green PC JP8 connector(VSYNCH) External battery J20 Green PC LED JP18 Turbo switch J21 Green PC connector JP42 Turbo LED J22 32-bit PCI slots PC1 – PC4 Green PC JP2 32-bit VESA local bus SL1 & SL2 connector (GPORT) slots USER CONFIGURABLE SETTINGS Function Label Position » Monitor type select monochrome JP3 Open Monitor type select EGA/VGA JP3 Closed » CMOS memory normal operation JP5 Pins 1 & 2 closed CMOS memory clear JP5 Pins 2 & 3 closed SIMM CONFIGURATION Size Bank 0 Bank 1 1MB (4) 256K x 9 None 2MB (4) 256K x 9 (4) 256K x 9 4MB (4) 1M x 9 None 5MB (4) 1M x 9 (4) 256K x 9 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 None 17MB (4) 256K x 9 (4) 4M x 9 20MB (4) 1M x 9 (4) 4M x 9 32MB (4) 4M x 9 (4) 4M x 9 64MB (4) 16M x 9 None 80MB (4) 4M x 9 (4) 16M x 9 128MB (4) 16M x 9 (4) 16M x 9 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 256KB (A) (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 256KB (B) (4) 64K x 8 None (1) 32K x 8 512KB (A) (4) 128K x 8 None (1) 32K x 8 512KB (B) (4) 64K x 8 (4) 64K x 8 (1) 32K x 8 1MB (4) 128K x 8 (4) 128K x 8 (1) 128K x 8 CACHE JUMPER CONFIGURATION Size JP13 JP14 JP33 256KB (A) Pins 1 & 2 Any setting Pins 1 & 2 closed closed 256KB (B) Pins 2 & 3 Any setting Pins 1 & 2 closed closed 512KB (A) Pins 2 & 3 Any setting Pins 2 & 3 closed closed 512KB (B) Any setting Pins 1 & 2 Pins 2 & 3 closed closed 1MB Any setting Pins 2 & 3 Pins 2 & 3 closed closed CPU SPEED SELECTION Speed JP34 JP35 JP36 JP39 25MHz Closed Open Open Closed 33MHz Closed Closed Closed Open 40MHz Closed Closed Open Open 50iMHz Closed Open Open Closed 50MHz Open Open Closed Open 66iMHz Closed Closed Closed Open 75iMHz Closed Open Open Closed 100iMHz Closed Closed Closed Open CPU TYPE SELECTION Type JP31 JP32 JP40 JP41 JP45 CX486S 4 & 5 5 & 6 2 & 3 2 & 3 2 & 3 AM486SX Open Open Open 2 & 3 1 & 2 80486SX Open Open Open 2 & 3 1 & 2 SL80486SX 3 & 4, 5 Open 1 & 2 2 & 3 2 & 3 & 6 CX486DX 4 & 5 5 & 6 2 & 3 1 & 2, 3 2 & 3 & 4 AM486DX Open Open Open 1 & 2, 3 1 & 2 & 4 80486DX Open Open Open 1 & 2, 3 1 & 2 & 4 SL80486DX 3 & 4, 5 Open 1 & 2 1 & 2, 3 2 & 3 & 6 & 4 AM486DX2 Open Open Open 1 & 2, 3 1 & 2 & 4 80486DX2 Open Open Open 1 & 2, 3 1 & 2 & 4 SL80486DX2 3 & 4, 5 Open 1 & 2 1 & 2, 3 2 & 3 & 6 & 4 80486DX4 3 & 4, 5 Open 1 & 2 1 & 2, 3 2 & 3 & 6 & 4 P24D 3 & 4, 5 2 & 3, 4 1 & 2, 3 1 & 2, 3 2 & 3 & 6 & 5 & 4 & 4 P24T 5 & 6 3 & 4 1 & 2 1 & 2, 3 2 & 3 & 4 Note: Pins designated should be in the closed position. CPU TYPE SELECTION (CON’T) Type JP46 JP52 JP53 JP54 JP63 CX486S 1 & 3, 2 Open Closed 1 & 2 Closed & 4 AM486SX 1 & 3, 2 Open Open Open Open & 4 80486SX 1 & 3, 2 Open Open Open Open & 4 SL80486SX 1 & 3, 2 Open Open Open Open & 4 CX486DX 1 & 3, 2 2 & 3 Open 1 & 2 Closed & 4 AM486DX 1 & 3, 2 2 & 3 Open Open Open & 4 80486DX 1 & 3, 2 2 & 3 Open Open Open & 4 SL80486DX 1 & 3, 2 2 & 3 Open Open Open & 4 AM486DX2 1 & 3, 2 2 & 3 Open Open Open & 4 80486DX2 1 & 3, 2 2 & 3 Open Open Open & 4 SL80486DX2 1 & 3, 2 2 & 3 Open Open Open & 4 80486DX4 3 & 5, 4 2 & 3 Open Open Open & 6 P24D 1 & 3, 2 2 & 3 Open 2 & 3 Open & 4 P24T 1 & 3, 2 1 & 2 Open 1 & 2 Open & 4 Note: Pins designated should be in the closed position. CPU MULTIPLIER SELECTION (80486DX4 ONLY) Multiplier JP64 2x Pins 2 & 3 closed 2.5x Pins 4 & 5 closed 3x Pins 1 & 2 closed WAIT STATE SELECTION Setting JP38 0 Open » 1 Closed VL-BUS SPEED SELECTION Setting JP37 <= 33MHz Open » >33 MHz Closed PCI BUS CLOCK SELECTION Setting JP20 JP27 ASYNCH Closed Pins 2 & 3 closed SYNCH Open Pins 1 & 2 closed PCI TRIGGER SELECTION Setting JP9 (PC3) JP10 (PC4) JP11 (PC1) JP12 (PC2) Level Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed closed Edge Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 closed closed closed closed PCI INTERRUPT SELECTION (IRQ14 FOR PCI1) Setting JP10B JP10L Level Pins 1 & 2 closed N/A Edge N/A Closed PCI INTERRUPT SELECTION (PCI 2, 3, 4) IRQ Setting JP10A JP10B JP10C JP10D JP10E 3 Level Open Open Open Open Open 3 Edge Open Open Open Open Open 4 Level Open Open Open Open Open 4 Edge Open Open Open Open Open 5 Level Open Open Open Open Open 5 Edge Open Open Open Open Open 6 Level Open Open Open Open Open 6 Edge Open Open Open Open Open 7 Level Open Open Open Open Open 7 Edge Open Open Open Open Open 9 Level Open Open Open Open Open 9 Edge Open Open Open Open Open 10 Level Open Open Open Open 1 & 2 10 Edge Open Open Open Open 2 & 3 11 Level Open Open Open 1 & 2 Open 11 Edge Open Open Open 2 & 3 Open 12 Level Open Open 1 & 2 Open Open 12 Edge Open Open 2 & 3 Open Open 14 Level Open 1 & 2 Open Open Open 14 Edge Open 2 & 3 Open Open Open 15 Level 1 & 2 Open Open Open Open 15 Edge 2 & 3 Open Open Open Open Note: Pins designated should be in the closed position. PCI INTERRUPT SELECTION (PCI 2, 3, 4) IRQ Setting JP10F JP10G JP10H JP10I JP10J JP10K 3 Level Open Open Open Open Open 1 & 2 3 Edge Open Open Open Open Open 2 & 3 4 Level Open Open Open Open 1 & 2 Open 4 Edge Open Open Open Open 2 & 3 Open 5 Level Open Open Open 1 & 2 Open Open 5 Edge Open Open Open 2 & 3 Open Open 6 Level Open Open 1 & 2 Open Open Open 6 Edge Open Open 2 & 3 Open Open Open 7 Level Open 1 & 2 Open Open Open Open 7 Edge Open 2 & 3 Open Open Open Open 9 Level 1 & 2 Open Open Open Open Open 9 Edge 2 & 3 Open Open Open Open Open 10 Level Open Open Open Open Open Open 10 Edge Open Open Open Open Open Open 11 Level Open Open Open Open Open Open 11 Edge Open Open Open Open Open Open 12 Level Open Open Open Open Open Open 12 Edge Open Open Open Open Open Open 14 Level Open Open Open Open Open Open 14 Edge Open Open Open Open Open Open 15 Level Open Open Open Open Open Open 15 Edge Open Open Open Open Open Open Note: Pins designated should be in the closed position.