PACKARD BELL PB400 (4MB) Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2 Processor Speed 16/20/25/33/50(internal)/66(internal)MHz Chip Set OPTI Max. onboard 20MB DRAM SRAM Cache 64/128/256KB BIOS Phoenix Dimensions 330mm x 218mm I/O Options Fax/modem daughterboard, floppy drive interface, game port, IDE interface, multi-function connector (IDE interface LED, keylock, reset, SW_MODLR, Turbo LED), parallel port, PS/2 keyboard port, PS/2 mouse port, serial port, VGA feature connector, VGA port NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location PS/2 keyboard J1 Keylock J19 PS/2 mouse J2 Fax/modem J21 daughterboard VGA port J3 IDE interface J25 Game port J4 Floppy drive interface J27 Parallel port J5 External speaker J28 connector Serial port B J6 Multi-function J32 connector External battery J7 CPU/chassis fan power J33 (+12VDC) VGA feature J13 Riser card S1 connector USER CONFIGURABLE SETTINGS Function Jumper Position » Internal battery enabled J8 Closed Internal battery disabled J8 Open » Onboard Game port enabled J12 pins 2 & 3 closed Onboard Game port disabled J12 pins 1 & 2 closed » Monitor type select color J16 Closed Monitor type select monochrome J16 Open » PS/2 mouse port enabled J17 Closed PS/2 mouse port disabled J17 Open » Onboard IDE interface enabled J24 pins 1 & 2 closed Onboard IDE interface disabled J24 pins 2 & 3 closed » Onboard floppy drive interface J26 pins 1 & 2 enabled closed Onboard floppy drive interface J26 pins 2 & 3 disabled closed » Onboard speaker enabled J29 pins 1 & 2 closed Onboard speaker disabled J29 pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Parity 0 Bank 1 Parity 1 Bank 2 4MB (2) 441000 (1) 411000 (2) 441000 (1) 411000 None 5MB (2) 441000 (1) 411000 (2) 441000 (1) 411000 (4) 256K x 9 8MB (2) 441000 (1) 411000 (2) 441000 (1) 411000 (4) 1M x 9 20MB (2) 441000 (1) 411000 (2) 441000 (1) 411000 (4) 4M x 9 Note:Bank 0 and 1 are soldered to the board. Locations of Parity 0 and 1 are unknown. VIDEO CONFIGURATION Mode J10 J14 VGA port (J3) pins 1 & 2 closed Closed VGA feature connector pins 1 & 2 closed Open (J13) Disabled pins 2 & 3 closed N/A VRAM CONFIGURATION Size Bank 0 Bank 1 512KB (4) 44256 None 1024KB (4) 44256 (4) 44256 Note: If Bank 1 sockets are omitted from board, board was factory installed with 1MB of VRAM. Bank 0 is soldered to the board. SERIAL PORT CONFIGURATION Modem (J21) Port B ISA Modem J18 J20 J101/JMOD * (J5) Disabled COM2 None N/A pins 1 Closed & 2 Disabled COM2 COM1 pins 2 pins 1 Closed & 3 & 2 Disabled COM2 COM3 pins 1 pins 1 Closed & 2 & 2 COM1 COM2 None pins 1 pins 1 Open & 2 & 2 COM3 COM2 None pins 2 pins 1 Open & 3 & 2 Disabled COM4 None N/A pins 2 Closed & 3 Disabled COM4 COM1 pins 2 pins 2 Closed & 3 & 3 Disabled COM4 COM3 pins 1 pins 2 Closed & 2 & 3 COM1 COM4 None pins 1 pins 2 Open & 2 & 3 COM3 COM4 None pins 2 pins 2 Open & 3 & 3 Note:* JMOD is a special block placed on J21 itself, connecting pins 10 and 11 together diagonally. Permanent damage to the board will occur if the JMOD jumper is installed improperly. Boards with J101 do not use the JMOD jumper (J101 is a direct replacement for JMOD). Pins designated should be in the closed position. PARALLEL PORT CONFIGURATION LPT IRQ J22 J23 » LPT1 IRQ7 pins 1 & 2 pins 1 & 2 closed closed LPT1 IRQ5 pins 1 & 2 pins 2 & 3 closed closed LPT2 IRQ7 pins 2 & 3 pins 1 & 2 closed closed LPT2 IRQ5 pins 2 & 3 pins 2 & 3 closed closed CPU TYPE CONFIGURATION CPU J30/1 J30/3 J30/5 J30/7 J30/9&10 J31 J34 & 2 & 4 & 6 & 8 80486SX Open Closed Open Open Open Open Open 80487SX Closed Open Closed Open Closed Open Open 80486DX Closed Open Closed Closed Open Open Open ODP486SX Closed Open Closed Closed Open Closed Closed 80486DX2 Closed Open Closed Closed Open Open Closed CPU SPEED CONFIGURATION Speed J35/pins 1 & 2 J35/pins 3 & 4 16MHz Closed Closed 20MHz Open Closed 25MHz Closed Open 33MHz Open Open CACHE CONFIGURATION Size Bank 0 Bank 1 TAG (U81) Dirty Bit (U84) 64KB (4) 8K x 8 (4) 8K x 8 (1) 32K x 8 (1) 64K x 1 128KB (4) 32K x 8 NONE (1) 32K x 8 (1) 64K x 1 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 (1) 64K x 1 CACHE JUMPER CONFIGURATION Size J36/1 & J36/3 & J36/5 & J36/7 & J36/9 & 2 4 6 8 10 » Disabled Open Open Open Open Open 64KB Open Open Open Open Open 128KB Closed Open Closed Closed Open 256KB Closed Closed Closed Open Closed