SOYO COMPUTER CO., LTD. SY-033 A2/A5/A1M Device Type Mainboard Processor Pentium Processor Speed 75/90/100MHz Chip Set Unidentified Maximum Onboard Memory 128MB Cache 256/512/1024KB BIOS Unidentified Dimensions 254mm x 218mm I/O Options 32-bit PCI slots (4) [Image] CONNECTIONS Purpose Location Purpose Location Green PC connector BSW1 Reset switch J19 5v power J2 Turbo switch J21 3.3v power J3 Turbo LED J22 Power LED & keylock J17 Chassis fan power JP9 Speaker J18 32-bit PCI slots PC1 – PC4 USER CONFIGURABLE SETTINGS Function Label Position » BIOS type select EPROM JP1 Pins 2 & 3, 4 & 5 closed BIOS type select flash JP1 Pins 1 & 2, 5 & 6 closed » Monitor type select color JP3 Closed Monitor type select JP3 Open monochrome » Factory configured - do not JP5 Unidentified alter » Factory configured - do not JP7 Pins 2 & 3 closed alter » External fan controlled by JP8 Pins 1 & 2 closed JP18 External fan always enabled JP8 Pins 2 & 3 closed » Factory configured - do not JP11 Pins 1 & 2 closed alter » Factory configured - do not JP12 Pins 2 & 3 closed alter » Factory configured - do not JP13 Pins 1 & 2 closed alter » Clock generator select JP17 Pins 1 & 2 closed stopped by STPCLK Clock generator select JP17 Pins 2 & 3 closed stopped by SMOUT » Fan control select stopped by JP18 Pins 1 & 2 closed STPCLK Fan control select stopped by JP18 Pins 2 & 3 closed SMOUT » Factory configured - do not JP20 Pins 2 & 3 closed alter » Factory configured - do not SLED Unidentified alter Note: The location of JP8 is unidentified. SIMM CONFIGURATION Size Bank 0 Bank 1 2MB (2) 256K x 36 None 4MB (2) 512K x 36 None 4MB (2) 256K x 36 (2) 256K x 36 8MB (2) 1M x 36 None 8MB (2) 512K x 36 (2) 512K x 36 12MB (2) 512K x 36 (2) 1M x 36 16MB (2) 2M x 36 None 16MB (2) 1M x 36 (2) 1M x 36 20MB (2) 512K x 36 (2) 2M x 36 24MB (2) 1M x 36 (2) 2M x 36 32MB (2) 4M x 36 None 32MB (2) 2M x 36 (2) 2M x 36 36MB (2) 512K x 36 (2) 4M x 36 40MB (2) 1M x 36 (2) 4M x 36 48MB (2) 2M x 36 (2) 4M x 36 64MB (2) 8M x 36 None 64MB (2) 4M x 36 (2) 4M x 36 72MB (2) 1M x 36 (2) 8M x 36 80MB (2) 2M x 36 (2) 8M x 36 96MB (2) 4M x 36 (2) 8M x 36 128MB (2) 8M x 36 (2) 8M x 36 128MB (2) 16M x 36 None SIMM JUMPER CONFIGURATION Size JP15 JP16 2MB Pins 1 & 2 closed Pins 1 & 2 closed 4MB Pins 1 & 2 closed Pins 1 & 2 closed 4MB Pins 2 & 3 closed Pins 2 & 3 closed 8MB Pins 2 & 3 closed Pins 2 & 3 closed 8MB Pins 1 & 2 closed Pins 1 & 2 closed 12MB Pins 1 & 2 closed Pins 1 & 2 closed 16MB Pins 1 & 2 closed Pins 1 & 2 closed 16MB Pins 2 & 3 closed Pins 2 & 3 closed 20MB Pins 2 & 3 closed Pins 2 & 3 closed 24MB Pins 1 & 2 closed Pins 1 & 2 closed 32MB Pins 2 & 3 closed Pins 2 & 3 closed 32MB Pins 1 & 2 closed Pins 1 & 2 closed 36MB Pins 2 & 3 closed Pins 2 & 3 closed 40MB Pins 1 & 2 closed Pins 1 & 2 closed 48MB Pins 2 & 3 closed Pins 2 & 3 closed 64MB Pins 1 & 2 closed Pins 1 & 2 closed 64MB Pins 2 & 3 closed Pins 2 & 3 closed 72MB Pins 1 & 2 closed Pins 1 & 2 closed 80MB Pins 2 & 3 closed Pins 2 & 3 closed 96MB Pins 1 & 2 closed Pins 1 & 2 closed 128MB Pins 2 & 3 closed Pins 2 & 3 closed 128MB Pins 1 & 2 closed Pins 1 & 2 closed CACHE CONFIGURATION Size Bank 0 TAG 256KB (8) 32K x 8 (1) 8K x 8 512KB (8) 64K x 8 (1) 16K x 8 1MB (8) 128K x 8 (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JP10 JP14 JP20 256KB Pins 2 & 3 Pins 1 & 2 Open closed closed 512KB Pins 1 & 2 Pins 1 & 2 Closed closed closed 1MB Pins 2 & 3 Pins 2 & 3 Closed closed closed CPU SPEED SELECTION CPU speed Clock Multiplier JP2 JP4 JP6 speed 75MHz 50MHz 1.5x Open Open Open 90MHz 60MHz 1.5x Closed Open Open 100MHz 66MHz 1.5x Closed Closed Closed