FORCOM TECHNOLOGY CORPORATION 419R Processor 80486SX/CX486S/80487SX/80486S2/80486DX/Am486DX/CX486DX/ ODP486SX/80486DX2/AM486DX2/CX486DX2/80486DX4/Pentium Overdrive Processor 20/25/33/40/50/50(internal)/66(internal)/75(internal)/100(internal)MHz Speed Chip Set OPTI Max. 128MB Onboard DRAM Cache 64/128/256/512KB BIOS AMI Dimensions 220mm x 260mm I/O 32-bit VESA local bus slots (3), green PC feature Options NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location External battery J1 Green monitor power JP63 supply Power LED & JP2 External power JP68 keylock management interface Turbo LED JP16 Reset switch S1 Turbo switch JP17 32-bit VESA Local bus SL1,SL2,SL3 slots Speaker JP18 USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select color JP30 Closed Monitor type select monochrome JP30 Open » Normal CPU ADS# operation JP36 pins 2 & 3 Delay CPU ADS# clock operation JP36 pins 1 & 2 » Power to CPU set at 5V JP64 pins 1 & 3, 2 & 4 Power to CPU set at 3.3V (for JP64 pins 4 & 6, 3 & Intel DX4 CPU) 5 » Set CPU external operation clock JP65 Open to 3X Set CPU external operation clock JP65 Closed to 2X » Cache size enabled 64KB or 256KB JP67 Closed Cache size enabled 128KB or JP67 Open 512KB Note:Jumper JP65, for any type of CPU other than above listed, leave "Open". DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (4) 256K x 9 NONE NONE NONE 2MB (1) 256K x 36 NONE (1) 256K x 36 NONE 4MB (4) 1M x 9 NONE NONE NONE 4MB (1) 512K x 36 (1) 512K x 36 4MB (1) 1M x 36 NONE NONE NONE 6MB (1) 512K x 36 (1) 1M x 36 NONE 8MB (1) 2M X 36 NONE NONE 8MB (1) 1M x 36 NONE (1) 1M x 36 NONE 8MB (4) 1M x 9 NONE (1) 1M x 36 NONE 10MB (1) 512K x 36 (1) 2M x 36 12MB (1) 1M x 36 NONE (1) 2M x 36 12MB (4) 1M x 9 NONE (1) 2M x 36 16MB (4) 4M x 9 NONE NONE NONE 16MB (1) 2M x 36 (1) 2M x 36 16MB (1) 4M x 36 NONE NONE NONE 20MB (4) 1M x 9 NONE (1) 4M x 36 NONE 20MB (1) 1M X 36 NONE (1) 4M x 36 NONE 32MB (4) 4M x 9 NONE (1) 4M x 36 NONE 32MB (1) 4M x 36 NONE (1) 4M x 36 NONE 64MB (4) 16M x 9 NONE NONE NONE 64MB (1) 8M x 36 (1) 8M x 36 64MB (1) 16M x 36 NONE NONE NONE 128MB (1) 16M x 36 NONE (1) 16M x 36 NONE 128MB (4) 16M x 9 NONE (1) 16M x 36 NONE 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) 32K 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 JP10 JP11 JP13 JP50 64KB Open Open pins 2 & 3 Open closed 128KB Open Closed pins 1 & 2 Open closed 256KB Closed Closed pins 2 & 3 Open closed 512KB Closed Closed pins 1 & 2 Closed closed INTERNAL CACHE TYPE CONFIGURATION CPU Type Internal Cache Type JP58 JP59 P24T Write-Through Open N/A P24T Write-Back Closed N/A P24D Write-Through N/A Open P24D Write-Back N/A Closed CPU TYPE CONFIGURATION Type JP3 JP5 JP8 JP42 JP43 JP44 80486SX Open Open pins 2 Open pins 1 Open & 3 & 2 AM486 pins 1 pins 2 pins 1 Open pins 1 Open & 2 & 3 & 2 & 2 Cx486S Open Open pins 2 pins 2 pins 1 Open & 3 & 3 & 2 80487SX pins 2 pins 2 pins 1 Open pins 1 Open & 3 & 3 & 2 & 2 Cx486S2 Open Open pins 2 pins 2 pins 2 Open & 3 & 3 & 3 80486DX pins 1 pins 2 pins 1 Open pins 1 Open & 2 & 3 & 2 & 2 Cx486DX pins 1 pins 2 pins 1 pins 2 pins 1 Open & 2 & 3 & 2 & 3 & 2 Cx486DX2 pins 1 pins 2 pins 1 pins 2 pins 2 Open & 2 & 3 & 2 & 3 & 3 P24C (DX4) pins 1 pins 2 pins 1 pins 1 pins 1 Closed & 2 & 3 & 2 & 2 & 2 P24T pins 2 pins 2 pins 1 Open pins 1 Open & 3 & 3 & 2 & 2 P24D pins 2 pins 2 pins 1 Open pins 1 Open & 3 & 3 & 2 & 2 Note:Pins designated are in the closed position. CPU TYPE CONFIGURATION (CON'T) Type JP45 JP46 JP47 JP48 JP49 80486SX Open Open Open Open pins 1 & 2 AMD486 Open Open Open Open pins 1 & 2 Cx486S Open Open Closed Closed pins 1 & 2 80487SX Open Open Open Open pins 1 & 2 Cx486S2 Open Open Closed Closed pins 2 & 3 80486DX Open Open Open Open pins 1 & 2 Cx486DX Open Open Closed Closed pins 1 & 2 Cx486DX2 Open Open Closed Closed pins 2 & 3 P24C (DX4) Closed Closed Open Open pins 1 & 2 P24T Open Open Open Open pins 1 & 2 P24D Open Open Open Open pins 1 & 2 Note:Pins designated are in the closed position. CPU TYPE (S-SERIES) CONFIGURATION Type JP3 JP5 JP8 JP42 JP43 JP44 80486SX Open Open pins 2 pins 1 pins 1 Closed & 3 & 2 & 2 80486DX pins 1 pins 2 pins 1 pins 1 pins 1 Closed & 2 & 3 & 2 & 2 & 2 Note:Pins designated are in the closed position. CPU TYPE (S-SERIES) CONFIGURATION Type JP45 JP46 JP47 JP48 JP49 80486SX Closed Closed Open Open pins 1 & 2 80486DX Closed Closed Open Open pins 1 & 2 Note:Pins designated are in the closed position. BUS SPEED (ID3) CONFIGURATION CPU speed JP34 <= 33MHz Open > 33MHz Closed VESA WAIT STATE (ID2) CONFIGURATION Wait states JP33 0 wait states Open 1 wait state Closed SYSTEM CLOCK (NOT FOR P24C) CONFIGURATION Frequency JP21 JP22 JP23 20MHz pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed 25MHz pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed 33MHz pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed 40MHz pins 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed 50MHz pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed SYSTEM CLOCK (FOR P24C (DX4)) CONFIGURATION Frequency JP21 JP22 JP23 25MHz pins 2 & 3 Open pins 2 & 3 closed closed 33MHz Open pins 2 & 3 pins 2 & 3 closed closed 50MHz Open pins 2 & 3 Open closed