PACKARD BELL 486 MODEL 3X3 SERIES, 4X4 SERIES Device Type Mainboard Processor 80486SX/80486SX2/80486DX/80486DX2/P24T Processor Speed 25/33/50(internal)/66(internal)MHz Chip Set OPTI Video Chip Set Cirrus Logic Maximum Onboard 64MB Memory Maximum Video Unidentified Memory Cache 128/512KB BIOS Phoenix Dimensions 254mm x 218mm I/O Options 32-bit VESA local bus slot, floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location PS/2 mouse port J2 IDE interface J23 VGA port J3 IDE interface J24 Parallel port J5 Front panel connector J34 Serial port 1 J6 Keylock J35 VGA feature connector J14 Chassis fan power J38 Floppy drive J21 Riser slot SL1 interface Modem connector J22 32-bit VESA local bus SL2 slot USER CONFIGURABLE SETTINGS Function Label Position » Factory configured - do not J4 Unidentified alter » Monitor type select color J8 Closed Monitor type select monochrome J8 Open » VGA IRQ9 disabled J9 Open VGA IRQ9 enabled J9 Closed » Factory configured - do not J10 Unidentified alter » Factory configured - do not J11 Unidentified alter » Boot block normal operation J17 Pins 2 & 3 closed Boot block enabled J17 Pins 1 & 2 closed » Parity disabled J18 Pins 2 & 3 closed Parity enabled J18 Pins 1 & 2 closed » On board video enabled J19 Pins 2 & 3 closed On board video disabled J19 Pins 1 & 2 closed » On board I/O enabled J20 Pins 2 & 3 closed On board I/O disabled J20 Pins 1 & 2 closed » Factory configured - do not J29 Unidentified alter » On board speaker enabled J30 Pins 3 & 4 closed On board speaker disabled J30 Open » LDEV# enabled J33 Closed LDEV# disabled J33 Open » Speaker enabled J36 Pins 3 & 4 closed Speaker disabled J36 Open » Factory configured - do not J39 Open alter » Factory configured - do not J40 Unidentified alter » Factory configured - do not J41 Unidentified alter SIMM CONFIGURATION Size Bank 0 Bank 1 Bank 2 1MB (1) 256K x 36 None 4MB 2MB (1) 512K x 36 None 4MB 2MB (1) 256K x 36 (1) 256K x 36 4MB 3MB (1) 512K x 36 (1) 256K x 36 4MB 4MB (1) 1M x 36 None 4MB 4MB (1) 512K x 36 (1) 512K x 36 4MB 5MB (1) 1M x 36 (1) 256K x 36 4MB 6MB (1) 1M x 36 (1) 512K x 36 4MB 8MB (1) 2M x 36 None 4MB 8MB (1) 1M x 36 (1) 1M x 36 4MB 9MB (1) 2M x 36 (1) 256K x 36 4MB 10MB (1) 2M x 36 (1) 512K x 36 4MB 12MB (1) 2M x 36 (1) 1M x 36 4MB 12MB (1) 1M x 36 (1) 2M x 36 4MB 16MB (1) 4M x 36 None 4MB 16MB (1) 2M x 36 (1) 2M x 36 4MB 17MB (1) 4M x 36 (1) 256K x 36 4MB 18MB (1) 4M x 36 (1) 512K x 36 4MB 20MB (1) 4M x 36 (1) 1M x 36 4MB 24MB (1) 4M x 36 (1) 2M x 36 4MB 32MB (1) 8M x 36 None 4MB 32MB (1) 4M x 36 (1) 4M x 36 4MB 33MB (1) 8M x 36 (1) 256K x 36 4MB 34MB (1) 8M x 36 (1) 512K x 36 4MB 36MB (1) 8M x 36 (1) 1M x 36 4MB 40MB (1) 8M x 36 (1) 2M x 36 4MB 48MB (1) 8M x 36 (1) 4M x 36 4MB 64MB (1) 8M x 36 (1) 8M x 36 4MB Note: If J37 is set to enabled, add 4 MB to the size column to get correct memory size. If 64MB is installed, J37 must be disabled. ON BOARD MEMORY CONFIGURATION Setting J37 » Enabled Open Disabled Closed CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 128KB (4) 32K x 8 None Unidentified 512KB (4) 64K x 8 (4) 64K x 8 Unidentified CACHE JUMPER CONFIGURATION Size J26 128KB Open 512KB Pins 1 & 2, 3 & 4 closed VIDEO MEMORY CONFIGURATION Note: The size of the video memory is unidentified. CPU SPEED SELECTION Speed J25 25MHz Pins 1 & 2 closed 33MHz Pins 2 & 3 closed 50iMHz Pins 1 & 2 closed 66iMHz Pins 2 & 3 closed CPU TYPE SELECTION Type J31 80486SX Pins 5 & 6 closed 80486SX2 Pins 1 & 2, 3 & 4 closed 80486DX Pins 1 & 2, 3 & 4 closed 80486DX2 Pins 1 & 2, 3 & 4 closed P24T Pins 1 & 2, 3 & 4 closed CPU TYPE SELECTION Type J28 SL enhanced Pins 1 & 2 closed Non SL enhanced Pins 2 & 3 closed P24T Pins 1 & 2 closed CPU VOLTAGE SELECTION Voltage J32 3.3v Pins 1 & 3, 2 & 4 closed » 5v Pins 3 & 5, 4 & 6 closed DMA CHANNEL SELECTION Channel J15 J16 » 1 Pins 1 & 2 closed Pins 1 & 2 closed 3 Pins 2 & 3 closed Pins 2 & 3 closed