WYSE TECHNOLOGY, INC. WYSE DECISION 486SE Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2 Processor Speed 16/20/25/33/50(Internal)/50/66(Internal) Chip Set OPTI Max. Onboard DRAM128MB SRAM Cache 128/256/512KB BIOS Phoenix Dimensions 330mm x 218mm I/O Options 32-bit local bus slots (2), CPU processor slot NPU Options 4167 [Image] CONNECTIONS Purpose Location Purpose Location Speaker J1 32-bit local bus slot SL1 Power LED & keylock J2 32-bit local bus slot SL2 Reset switch S1 CPU processor slot SL3 USER CONFIGURABLE SETTINGS SYSTEM BOARD Function Jumper Position » Factory configured - do not alter JP1 closed » Factory configured - do not alter JP2 closed » Factory configured - do not alter JP3 closed » Factory configured - do not alter JP4 closed » Factory configured - do not alter JP5 closed » Factory configured - do not alter JP6 closed » Factory configured - do not alter JP7 pins 2 & 3 closed » Monitor type select color JP8 closed Monitor type select monochrome JP8 open » Factory configured - do not alter JP12 closed » Factory configured - do not alter JP13 closed » Factory configured - do not alter JP14 closed » Factory configured - do not alter JP15 open » Factory configured - do not alter JP16 closed DRAM CONFIGURATION Size Bank 0 Bank 1 4MB (4) 1M x 9 NONE 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE 20MB (4) 1M x 9 (4) 4M x 9 32MB (4) 4M x 9 (4) 4M x 9 64MB (4) 16M x 9 NONE 128MB (4) 16M x 9 (4) 16M x 9 BUS CLOCK CONFIGURATION Speed JP9 JP10 JP11 » £ 25MHz Open Open pins 2 & 3 closed ³ 33MHz Closed Open pins 1 & 2 closed » 16MHz synchronous Open Open pins 2 & 3 closed » 20MHz synchronous Open Open pins 2 & 3 closed 25MHz synchronous Closed Open pins 1 & 2 closed 50MHz synchronous Closed Open pins 1 & 2 closed [Image] USER CONFIGURABLE SETTINGS CPU BOARD Function Jumper Position » Factory configured - do not alter JP4 open » Factory configured - do not alter JP5 closed » Clock generator/oscillator enabled JP14 pins 1 & 2 closed Clock generator/oscillator disabled JP14 pins 2 & 3 closed Note: Clock generator is installed in U34 on board X770171 and in U33 on board Y77071. SRAM JUMPER CONFIGURATION Size JP6 JP8 JP9 JP10 JP11 JP12 JP13 128KB pins 1 closed open open closed open open & 2 closed 256KB pins 2 closed closed open closed closed open & 3 closed 512KB pins 1 closed closed closed closed closed closed & 2 closed SRAM CONFIGURATION Size Cache Location TAG/U26 TAG/U27 TAG/U16 Dirty Bit/U25 64KB (8) 8K Banks 0 & NONE NONE (1) 16K (1) 64K x x 8 1 x 1 1 128KB (4) Bank 0 NONE (1) 8K x (1) 16K (1) 64K x 32K x 8 x 1 1 8 256KB (8) Banks 0 & (1) 8K x (1) 8K x (1) 16K (1) 64K x 32K x 1 8 8 x 1 1 8 512KB (8) Bank 0 NONE (1) 32K (1) 64K (1) 64K x 128K x x 8 x 1 1 8 Note: For Tag Ram U16 may be occupied with 64K x 1 chips. CPU SPEED CONFIGURATION Type CPU Speed JP1 JP2 JP3 JP7 80486SX 16MHz pins 2 & 3 pins 2 open open & 3 80487SX 16MHz closed pins 2 pins 1 open & 3 & 2 80486SX 20MHz pins 2 & 3 pins 2 open open & 3 80487SX 20MHz closed pins 2 pins 1 open & 3 & 2 80486SX 25MHz pins 2 & 3 pins 2 open closed & 3 80486SX 33MHz pins 2 & 3 pins 2 open closed & 3 80486DX 25MHz closed pins 2 pins 2 closed & 3 & 3 80486DX 33MHz closed pins 2 pins 2 closed & 3 & 3 80486DX2/50i 25MHz closed pins 2 pins 2 closed & 3 & 3 80486DX2/66i 33MHz closed pins 2 pins 2 closed & 3 & 3 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION SWITCH 1 BOARD X77017 Type SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 SW1/7 SW1/8 80486SX/16MHz off on off on on off on off 80487SX/16MHz off on off on on off on off 80486SX/20MHz off off off on on off on off 80487SX/20MHz off off off on on off on off 80486SX/25MHz off on on off on off on off 80486SX/33MHz off on on off on off on off 80486DX/25MHz off on on off on off on off 80486DX/33MHz off on on off on off on off 80486DX2/50iMHz off on on off on off on off 80486DX2/66iMHz off off on off on off on off CPU TYPE CONFIGURATION SWITCH 1 BOARD Y77017 Type SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 SW1/7 SW1/8 80486SX/16MHz on off off on on off on off 80487SX/16MHz on off off on on off on off 80486SX/20MHz off off on on on off off off 80487SX/20MHz off off on on on off off off 80486SX/25MHz off off on on on off on off 80486SX/33MHz off on on on on off on off 80486DX/25MHz on off on on on off on off 80486DX/33MHz off on on on on off on off 80486DX2/50iMHz on on on on on off on off 80486DX2/66iMHz off off on on on off on off