PACKARD BELL PB410 & PB420/420T (REVISION C) Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2 Processor Speed 20/25/33/40/50(internal)/66(internal)MHz Chip Set ACC Max. onboard 36MB DRAM SRAM Cache 32/128/512KB BIOS Phoenix Dimensions 330mm x 240mm I/O Options Fax/modem daughterboard, floppy drive interface, game port, IDE interface, multi-function connector (IDE interface LED, reset, keylock, turbo switch, turbo-LED, non-turbo LED), parallel port, PS/2 keyboard port, PS/2 mouse port, serial port, VGA port, video feature connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location PS/2 keyboard J1 Floppy drive interface J19 PS/2 mouse J2 Propriatary fax/modem J21 daughterboard VGA port J3 External battery J28 Game port J4 External fan power J35 (+12V DC) Parallel port J5 Multi-function J36 connector Serial port J6 Keylock J37 Video feature J10 Speaker J38 connector Audio interface J14 Riser card S1 connector (unused) IDE interface J18 USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » Onboard Game port enabled J15 Closed Onboard Game port disabled J15 Open » PS/2 mouse port enabled J27 Closed (IRQ12) PS/2 mouse port disabled J27 Open » Monitor type select color J12 Closed Monitor type select J12 Open monochrome » Onboard I/O ports enabled J16 Closed Onboard I/O ports disabled J16 Open » Hard drive boot from DOS J17 pins 2 & 3 boot block closed Hard drive boot from custom J17 pins 1 & 2 boot block closed » Flash BIOS write protect J20 Open enabled Flash BIOS write protect J20 Closed disabled » Onboard battery enabled J24 Closed Onboard battery disabled J24 Open » Speaker select internal J39 pins 1 & 2 closed Speaker select external J39 pins 2 & 3 closed Note:Parallel port, serial port, floppy drive interface, and IDE interface are configured through the BIOS setup options. J20 is only a trace, and has not been implimented in any production models of the board. DRAM CONFIGURATION (NO MEMORY SOLDERED TO BOARD) Size Bank 0 2MB (1) 512K x 36 4MB (1) 1M x 36 8MB (1) 2M x 36 16MB (1) 4M x 36 32MB (1) 8M x 36 DRAM CONFIGURATION (4MB OF MEMORY SOLDERED TO BOARD) Size Bank 0 Parity 0 (P0) Bank 1 4MB (8) 441000 (1) 441000 NONE 6MB (8) 441000 (1) 441000 (1) 512K x 36 8MB (8) 441000 (1) 441000 (1) 1M x 36 12MB (8) 441000 (1) 441000 (1) 2M x 36 20MB (8) 441000 (1) 441000 (1) 4M x 36 36MB (8) 441000 (1) 441000 (1) 8M x 36 Note:Bank 0 & parity 0 are soldered to the board. ONBOARD VIDEO CONFIGURATION Onboard Video IRQ J11 J22 » Enabled IRQ9 pins 2 & 3 Closed closed Enabled None pins 2 & 3 Open closed Disabled N/A pins 1 & 2 N/A closed VRAM CONFIGURATION Size Bank 0 (U23) Bank 1 (U20) Bank 1 (U22) 512KB (1) 256K x 16 NONE NONE DIP 1MB factory (1) 256K x 16 NONE (1) 256K x 16 installed DIP DIP 1MB user installed (1) 256K x 16 (1) 256K x 16 NONE DIP ZIP Note:If board is factory installed with 1MB of VRAM, a second 256K x 16 DIP will soldered on the board at U22. If board is factory configured with 512KB of VRAM, U22 will only be a trace, and a 40-pin ZIP socket will be installed at location U20. If the ZIP socket is present, there will also be traces for 2 additional zip sockets at U14 and U16. Sockets installed on ZIP socket traces will not function. PARALLEL PORT IRQ CONFIGURATION IRQ J13 » IRQ7 pins 1 & 2 closed IRQ5 pins 2 & 3 closed CPU TYPE CONFIGURATION CPU J29 J34 J40 80486SX Closed pins 5 & 6 pins 3 & 4 closed closed 80487SX Closed pins 3 & 4 pins 1 & 2, 5 closed & 6 closed 80486DX Closed pins 1 & 2, 5 pins 1 & 2, 5 & 6 closed & 6 closed ODPR486SX-25MHz Open pins 1 & 2, 5 pins 1 & 2, 5 & 6 closed & 6 closed ODP486SX-33MHz Open pins 3 & 4 pins 1 & 2, 5 closed & 6 closed 80486DX2 Open pins 1 & 2, 5 pins 1 & 2, 5 & 6 closed & 6 closed CPU SPEED CONFIGURATION Speed J23 J25 J26 20MHz Closed Open Open 25/50i MHz Open Closed Closed 33/66i MHz Open Closed Open 40MHz Open Open Closed CACHE CONFIGURATION Size Cache TAG » 32KB (4) 8K x 8 (1) 8K x 8 128KB (4) 32K x 8 (1) 32K x 8 512KB (4) 128K x 8 (1) 128K x 8 CACHE JUMPER CONFIGURATION Size J30 J31 J32 J33 » 32KB Open pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 128KB Closed pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed 512KB Closed pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed