COMPUTREND SYSTEMS, INC. VLB S14 (SIS486) Processor 80486SX/SL80486SX/CX486DX/AM486DX/80486DX/SL80486DX/CX486DX2/ AM486DX2/80486DX2/SL80486DX2 Processor 25/33/40/50(internal)/50/66(internal)MHz Speed Chip Set SIS Max. 128MB Onboard DRAM Cache 128/256KB BIOS AMI/Phoenix Dimensions 260mm x 221mm I/O Floppy drive interface, game interface, green PC connector, IDE Options interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Game interface CN1 Power LED & JFP pins 1 - keylock 5 PS/2 mouse port CN2 Speaker JFP pins 7 - 10 Serial port 1 CN3 Turbo LED JFP pins 12 & 13 Serial port 2 CN4 Turbo switch JFP pins 15 - 17 Parallel port CN5 Reset switch JFP pins 19 & 20 VGA port CN6 IDE interface LED JFPA Floppy drive CN7 Green PC connector JG1 interface (monitor) VGA feature CN8 Green PC LED JG2 connector IDE interface CN9 Green PC connector JG3 External battery JB Riser slot SL1 USER CONFIGURABLE SETTINGS Function Jumper Position Battery type select internal JB Pins 2 & 3 closed Battery type select external JB Closed Serial port 1 select COM1 JCOM1 Pins 1 & 2 closed Serial port 1 select COM3 JCOM1 Pins 2 & 3 closed Serial port 2 select COM2 JCOM2 Pins 1 & 2 closed Serial port 2 select COM4 JCOM2 Pins 2 & 3 closed Floppy drive interface enabled JFDD Pins 1 & 2 closed Floppy drive interface disabled JFDD Pins 2 & 3 closed Game port enabled JGAME Pins 1 & 2 closed Game port disabled JGAME Pins 2 & 3 closed IDE interface enabled JHDD Pins 1 & 2 closed IDE interface disabled JHDD Pins 2 & 3 closed Parallel port select LPT1 JPP1 Pins 1 & 2 closed Parallel port select LPT2 JPP1 Pins 2 & 3 closed Parallel port select IRQ7 JPP2 Pins 1 & 2 closed Parallel port select IRQ5 JPP2 Pins 2 & 3 closed On board VGA enabled JVGA Pins 1 & 2 closed On board VGA disabled JVGA 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) 512K x None None None 36 2MB (1) 256K x (1) 256K x None None 36 36 4MB (1) 1M x 36 None None None 4MB (1) 512K x (1) 256K x (1) 256K x None 36 36 36 4MB (1) 512K x (1) 512K x None None 36 36 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 5MB (1) 1M x 36 (1) 256K x None None 36 5MB (1) 256K x (1) 512K x (1) 512K x None 36 36 36 5MB (1) 256K x (1) 1M x 36 None None 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 6MB (1) 1M x 36 (1) 512K x None None 36 8MB (1) 2M x 36 None None None 8MB (1) 1M x 36 (1) 512K x (1) 512K x None 36 36 8MB (1) 1M x 36 (1) 1M x 36 None None 9MB (1) 2M x 36 (1) 256K x None None 36 9MB (1) 256K x (1) 1M x 36 (1) 1M x 36 None 36 9MB (1) 256K x (1) 2M x 36 None None 36 10MB (1) 256K x (1) 256K x (1) 1M x 36 (1) 1M x 36 36 36 12MB (1) 2M x 36 (1) 512K x (1) 512K x None 36 36 12MB (1) 2M x 36 (1) 1M x 36 None None 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 None 12MB (1) 1M x 36 (1) 2M x 36 None None 16MB (1) 4M x 36 None None None 16MB (1) 2M x 36 (1) 1M x 36 (1) 1M x 36 None 16MB (1) 2M x 36 (1) 2M x 36 None None 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 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 20MB (1) 4M x 36 (1) 512K x (1) 512K x None 36 36 20MB (1) 4M x 36 (1) 1M x 36 None None 20MB (1) 2M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 20MB (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 None 20MB (1) 1M x 36 (1) 4M x 36 None None 32MB (1) 8M x 36 None None None 32MB (1) 4M x 36 (1) 2M x 36 (1) 2M x 36 None 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 35MB (1) 8M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 36MB (1) 8M x 36 (1) 512K x (1) 512K x None 36 36 36MB (1) 8M x 36 (1) 1M x 36 None None 36MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 None 36MB (1) 1M x 36 (1) 8M x 36 None None 40MB (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 None 40MB (1) 8M x 36 (1) 2M x 36 None None 40MB (1) 4M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 40MB (1) 2M x 36 (1) 4M x 36 (1) 4M x 36 None 40MB (1) 2M x 36 (1) 8M x 36 None None 44MB (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 48MB (1) 8M x 36 (1) 2M x 36 (1) 2M x 36 None 48MB (1) 8M x 36 (1) 4M x 36 None None 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 None 48MB (1) 4M x 36 (1) 8M x 36 None None 49MB (1) 256K x (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 50MB (1) 512K x (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 36 52MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 56MB (1) 8M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 56MB (1) 2M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 64MB (1) 8M x 36 (1) 4M x 36 (1) 4M x 36 None 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 72MB (1) 2M x 36 (1) 8M x 36 (1) 8M x 36 None 80MB (1) 8M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 80MB (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 None 96MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 None 98MB (1) 512K x (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 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 128KB (4) 32K x 8 None (1) 8K/16K/32K x 8 256KB (A) (4) 32K x 8 (4) 32K x 8 (1) 16K/32K x 8 256KB (B) (4) 64K x 8 None (1) 16K/32K x 8 CACHE JUMPER CONFIGURATION Size JS1 JS2 JS3 128KB Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed 256KB (A) Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 closed closed closed 256KB (B) Pins 2 & 3 Pins 1 & 2 Pins 1 & 2 closed closed closed CPU TYPE CONFIGURATION Type JC2 JC3 JC4 JC5 Cyrix 2 & 3, 5 & 2 & 3, 5 & 2 & 3, 5 & 2 & 3, 5 & 6 6 6 6 AMD 6 & 7 6 & 7 6 & 7 6 & 7 Intel 6 & 7 6 & 7 6 & 7 6 & 7 Intel SL-series 1 & 2, 6 & 1 & 2, 6 & 1 & 2, 6 & 1 & 2, 6 & 7 7 7 7 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type JC6 JC7 Cyrix Pins 1 & 2 closed Pins 2 & 3 closed AMD Pins 2 & 3 closed Pins 1 & 2 closed Intel Pins 2 & 3 closed Pins 1 & 2 closed CPU TYPE CONFIGURATION Type JC1 SX Pins 2 & 3, 5 & 6, 7 & 8 closed DX Pins 4 & 7, 2 & 5, 6 & 9 closed DX2 Pins 1 & 4, 2 & 5, 6 & 9 closed CPU SPEED CONFIGURATION Speed JK1 JK2 JK3 JK4 25MHz Pins 2 & 3 Closed Closed Closed closed 33MHz Pins 1 & 2 Closed Open Closed closed 40MHz Pins 1 & 2 Closed Closed Open closed 50iMHz Pins 2 & 3 Closed Closed Closed closed 50MHz Pins 1 & 2 Open Closed Closed closed 66iMHz Pins 1 & 2 Closed Open Closed closed CPU VOLTAGE CONFIGURATION Voltage JP24 3.3v Pins 7 & 8, 9 & 10 closed 5v Pins 1 & 2, 3 & 4 closed VIDEO MEMORY CONFIGURATION Size Bank 0 Bank 1 Bank 2 512KB (1) 256K x 16 None None 1MB (1) 256K x 16 (1) 256K x 16 None 2MB (1) 256K x 16 (1) 256K x 16 (2) 256K x 16