YOUNG MICRO SYSTEMS, INC. CROSS 486G-VLB Processor SL80486SX/80486SX/SL80486DX/80486DX/80486DX2/80486DX4/P24D/ Pentium Overdrive Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz Speed Chip Set OPTI Max. 128MB Onboard DRAM Cache 64/128/256/512KB BIOS AMI Dimensions 254mm x 218mm I/O 32-bit VESA local bus slots (3), green PC Options NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Turbo switch J1 Reset switch J4 Power LED & keylock J2 Turbo LED J5 Speaker J3 32-bit VESA local SL1 - SL3 bus slots USER CONFIGURABLE SETTINGS Function Jumper Position » Factory configured - do not JP1 Open alter Factory configured - do not JP2 pins 1 & 2 alter closed » Monitor type select color JP3 Closed Monitor type select monochrome JP3 Open » Factory configured - do not JP8 Open alter » Factory configured - do not JP11 Closed alter » Factory configured - do not JP12 Open alter » Factory configured - do not JP13 Open alter » Factory configured - do not JP14 Open alter » Factory configured - do not JP15 Open alter » Factory configured - do not JP16 Open alter » Factory configured - do not JP17 Open alter » Factory configured - do not JP18 Open alter » Factory configured - do not JP20 pins 2 & 3 alter closed » Factory configured - do not JP21 pins 1 & 2 alter closed » Factory configured - do not JP22 Open alter » Factory configured - do not JP25 Open alter » Factory configured - do not JP28 pins 1 & 2 alter closed » Factory configured - do not JP30 Open alter » Factory configured - do not JP31 pins 2 & 3 alter closed » Factory configured - do not JP38 Open alter » Factory configured - do not JP39 Open alter » Factory configured - do not JP40 Closed alter DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x NONE NONE NONE 36 4MB (1) 512K x (1) 512K x NONE NONE 36 36 4MB (1) 1M x 36 NONE NONE NONE 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 8MB (1) 2M x 36 NONE NONE NONE 16MB (1) 4M x 36 NONE NONE NONE 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 32MB (1) 4M x 36 (1) 4M x 36 NONE NONE 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 64MB (1) 8M x 36 (1) 8M x 36 NONE NONE 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 128MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 128KB (4) 32K x 8 NONE (1) 8K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 512KB (4) 128K x 8 NONE (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JP32 JP33 JP34 JP35 JP36 JP37 64KB Open 2 & 3 2 & 3 Open Open Open 128KB Open 2 & 3 1 & 2 Open Closed Open 256KB Open 2 & 3 2 & 3 Closed Closed Open 512KB Closed Open 1 & 2 Closed Closed Closed Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type JP9 JP10 JP19 JP29 JP106 JP107 SL80486SX Closed Closed Open 2 & 3 Open Open 80486SX Closed Closed Open 2 & 3 Open Open SL80486DX Closed Closed 1 & 2 1 & Open Open 2, 3 & 4 80486DX Closed Closed 1 & 2 1 & Open Open 2, 3 & 4 80486DX2 Closed Closed 1 & 2 1 & Open Open 2, 3 & 4 80486DX4 Open Open 1 & 2 1 & Closed Closed 2, 3 & 4 P24D Closed Closed 1 & 2 1 & Open Open 2, 3 & 4 P24T Open Open 1 & 2 1 & Closed Closed 2, 3 & 4 Note: Pins designated should be in the closed position. CPU SPEED CONFIGURATION Speed JP5 JP6 JP7 25MHz Open Open Closed 33MHz Closed Open Closed 40MHz Open Closed Closed 50iMHz Open Open Closed 50MHz Closed Closed Closed 66iMHz Closed Open Closed 75iMHz Open Open Closed 100iMHz Closed Open Closed CPU SPEED CONFIGURATION (80486DX4 ONLY) Speed JP26 2x pins 1 & 2 closed 2.5x pins 2 & 3 closed 3x Open VESA WAIT STATE CONFIGURATION Wait states JP23 0 wait states Open 1 wait state Closed BUS SPEED CONFIGURATION CPU speed JP24 <= 33MHz Open > 33MHz Closed BIOS CONFIGURATION Setting JP4 JP27 CMOS memory normal pins 2 & 3 closed pins 1 & 2 closed operation CMOS memory clear pins 1 & 2 closed pins 2 & 3 closed