ELITEGROUP COMPUTER SYSTEMS, INC. UM4981 AIO Processor CX486S/U5S/SL80486SX/80486SX/SL80486SX2/80486SX2/AM486DX/ AM486DXL/CX486DX/SL80486DX/80486DX/AM486DXL2/AM486DX2/ CX486DX2/SL80486DX2/80486DX2/P24D/80486DX4 Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz Speed Chip Set UMC Max. 64MB Onboard DRAM Cache 64/128/256KB BIOS Phoenix Dimensions 330mm x 218mm I/O 32-bit VESA local bus slots (2), floppy drive interface, green PC Options connector, IDE interfaces (2), parallel port, serial ports (2) NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Parallel port J1 Power LED & keylock JP30 Serial port 1 J2 Speaker JP31 Serial port 2 J3 Reset switch JP32 Floppy drive interface J4 Turbo LED JP33 IDE interface J5 Turbo switch JP34 (primary) IDE interface J6 IDE interface LED JP39 (secondary) External battery JP1 32-bit VESA local SL1 & SL2 bus slots Green PC connector JP15 USER CONFIGURABLE SETTINGS Function Jumper Position » Flash BIOS voltage select 5v JP2 pins 1 & 2 closed Flash BIOS voltage select 12v JP2 pins 2 & 3 closed » On board I/O enabled JP3 pins 1 & 2 closed On board I/O disabled JP3 pins 2 & 3 closed » Parallel port IRQ select IRQ7 JP4 pins 2 & 3 closed Parallel port IRQ select IRQ5 JP4 pins 1 & 2 closed » Factory configured - do not JP7 N/A alter » Parallel port mode select normal JP8 Open mode Parallel port mode select ECP JP8 Closed mode » Primary IDE interface enabled JP35 pins 1 & 2 closed Primary IDE interface disabled JP35 pins 2 & 3 closed » Secondary IDE interface enabled JP36 pins 1 & 2 closed Secondary IDE interface disabled JP36 pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x NONE NONE NONE 36 2MB (1) 256K x (1) 256K x NONE NONE 36 36 2MB NONE NONE (1) 512K x NONE 36 3MB (1) 256K x (1) 256K x (1) 256K x NONE 36 36 36 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 4MB NONE NONE (1) 512K x (1) 512K x 36 36 4MB (1) 1M x 36 NONE NONE NONE 5MB (1) 1M x 36 (1) 256K x NONE NONE 36 6MB (1) 1M x 36 (1) 256K x (1) 256K x NONE 36 36 7MB (1) 1M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 8MB NONE NONE NONE (1) 2M x 36 9MB (1) 1M x 36 (1) 1M x 36 (1) 256K x NONE 36 10MB (1) 1M x 36 (1) 1M x 36 (1) 256K x (1) 256K x 36 36 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 NONE 13MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 256K x 36 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 16MB NONE NONE (1) 2M x 36 (1) 2M x 36 16MB (1) 4M x 36 NONE NONE NONE 17MB (1) 4M x 36 (1) 256K x NONE NONE 36 18MB (1) 4M x 36 (1) 256K x (1) 256K x NONE 36 36 19MB (1) 4M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 20MB (1) 4M x 36 (1) 1M x 36 NONE NONE 21MB (1) 4M x 36 (1) 1M x 36 (1) 256K x NONE 36 22MB (1) 4M x 36 (1) 1M x 36 (1) 256K x (1) 256K x 36 36 24MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 NONE 25MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 (1) 256K x 36 28MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 32MB (1) 4M x 36 (1) 4M x 36 NONE NONE 33MB (1) 4M x 36 (1) 4M x 36 (1) 256K x NONE 36 34MB (1) 4M x 36 (1) 4M x 36 (1) 256K x (1) 256K x 36 36 36MB (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 NONE 37MB (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 (1) 256K x 36 40MB (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 NONE 49MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 256K x 36 52MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M 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 CACHE JUMPER CONFIGURATION Size JP22 JP23 JP24 JP25 64KB pins 2 & 3 Open Open Open closed 128KB pins 1 & 2 pins 1 & 2 Open Closed closed closed 256KB pins 2 & 3 pins 2 & 3 Closed Closed closed closed CPU TYPE CONFIGURATION Type JP16 JP17 JP18 CX486S pins 2 & 3, 4 & pins 2 & 3, 4 & pins 1 & 2, 3 & 4, 5 closed 5 closed 5 & 6 closed U5S Open pins 1 & 2 pins 2 & 3 closed closed SL80486SX pins 1 & 2, 3 & pins 5 & 6 pins 1 & 2 closed 4 closed closed 80486SX Open Open pins 2 & 3 closed SL80486SX2 pins 1 & 2, 3 & pins 5 & 6 pins 1 & 2 closed 4 closed closed 80486SX2 Open Open pins 2 & 3 closed AM486DX Open Open pins 2 & 3 closed AM486DXL Open pins 1 & 2 pins 2 & 3 closed closed CX486DX pins 2 & 3 pins 2 & 3, 4 & pins 1 & 2, 3 & 4, closed 5 closed 5 & 6 closed SL80486DX pins 1 & 2, 3 & pins 5 & 6 pins 1 & 2 closed 4 closed closed 80486DX Open Open pins 2 & 3 closed AM486DX2 Open Open pins 2 & 3 closed AM486DXL2 Open pins 1 & 2 pins 2 & 3 closed closed CX486DX2 pins 2 & 3 pins 2 & 3, 4 & pins 1 & 2, 3 & 4, closed 5 closed 5 & 6 closed SL80486DX2 pins 1 & 2, 3 & pins 5 & 6 pins 1 & 2 closed 4 closed closed 80486DX2 Open Open pins 2 & 3 closed P24D pins 1 & 2, 3 & pins 3 & 4, 5 & pins 1 & 2, 4 & 5 4 closed 6 closed closed 80486DX4 pins 1 & 2, 3 & pins 5 & 6 pins 1 & 2 closed 4 closed closed CPU TYPE CONFIGURATION (CON’T) Type JP19 JP20 JP21 CX486S pins 1 & 2, 3 & Open pins 2 & 3 4 closed closed U5S pins 2 & 3 pins 3 & 4 pins 2 & 3 closed closed closed SL80486SX pins 1 & 2 Open pins 2 & 3 closed closed 80486SX Open Open pins 2 & 3 closed SL80486SX2 pins 1 & 2 Open pins 2 & 3 closed closed 80486SX2 Open Open pins 2 & 3 closed AM486DX Open pins 1 & 2 pins 1 & 2, 3 & closed 4 closed AM486DXL pins 2 & 3 pins 1 & 2, 3 & pins 1 & 2, 3 & closed 4 closed 4 closed CX486DX pins 1 & 2, 3 & pins 1 & 2 pins 1 & 2, 3 & 4 closed closed 4 closed SL80486DX pins 1 & 2 pins 1 & 2 pins 1 & 2, 3 & closed closed 4 closed 80486DX Open pins 1 & 2 pins 1 & 2, 3 & closed 4 closed AM486DX2 Open pins 1 & 2 pins 1 & 2, 3 & closed 4 closed AM486DXL2 pins 2 & 3 pins 1 & 2, 3 & pins 1 & 2, 3 & closed 4 closed 4 closed CX486DX2 pins 1 & 2, 3 & pins 1 & 2 pins 1 & 2, 3 & 4 closed closed 4 closed SL80486DX2 pins 1 & 2 pins 1 & 2 pins 1 & 2, 3 & closed closed 4 closed 80486DX2 Open pins 1 & 2 pins 1 & 2, 3 & closed 4 closed P24D pins 1 & 2, 4 & pins 1 & 2 pins 1 & 2, 3 & 5 closed closed 4 closed 80486DX4 pins 1 & 2 pins 1 & 2 pins 1 & 2, 3 & closed closed 4 closed CPU SPEED CONFIGURATION Speed JP9 JP10 JP11 25MHz Open Open Closed 33MHz Closed Closed Closed 40MHz Open Closed Closed 50iMHz Open Open Closed 50MHz Closed Open Open 66iMHz Closed Closed Closed 75iMHz Open Open Closed 100iMHz Closed Closed Closed CPU SPEED CONFIGURATION (80486DX4 ONLY) Speed JP29 2x pins 2 & 3 closed 3x Open CPU VOLTAGE CONFIGURATION Voltage JP26 3.3v (from on board regulator) pins 3 & 4 closed 3.3v (from special power supply pins 5 & 6 closed unit) 5v (from standard power supply unit pins 1 & 2 closed VESA WAIT STATE CONFIGURATION Wait states JP27 0 wait states Open 1 wait state Closed BUS SPEED CONFIGURATION CPU speed JP28 <= 33MHz Open > 33MHz Closed ECP MODE CONFIGURATION Setting JP5 JP6 DRQ1/DACK 1 pins 1 & 2 closed pins 1 & 2 closed DRQ3/DACK 3 pins 2 & 3 closed pins 2 & 3 closed HARD DRIVE TIMING CONFIGURATION Active Cycle Speed HDD capacity JP37 JP38 time time 15T 30T 1 40/50MHz 2 & 3 2 & 3 15T 19T 2 25/33MHz 1 & 2 2 & 3 9T 13T 3 <20mhz/enhanced IDE 2 & 3 1 & 2 18T 37T 0 <40mhz/non ATA 1 & 2 1 & 2 support