
PACKARD BELL

PB300/PB320 (REV. B)

Processor             80386SX
Processor Speed       25MHz
Chip Set              ACC
Max. onboard DRAM     5MB
Cache                 None
BIOS                  Phoenix
Dimensions            230mm x 220mm
I/O Options           Fax/modem daughterboard, floppy drive interface,
                      game port, IDE interface, parallel port, PS/2
                      keyboard port, PS/2 mouse port, serial port, VGA
                      port
NPU Options           80387SX

[Image]

                                CONNECTIONS

  Purpose               Location     Purpose                   Location

  External battery        JBT        Parallel port               JLPT

  Serial port            JCOM2       Proprietary modem           JMOD
                                     daughterboard

  Floppy drive            JFDD       PS/2 keyboard               JPKB
  interface

  Game port               JGAM       PS/2 mouse                  JPMS

  IDE interface           JHDD       VGA port                    JVGA

  IDE interface LED       JHDI       Riser card                   S1

  Front panel             JIND
  connector

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

     Onboard floppy drive                  JFDC             pins 1 & 2
      interface enabled                                        closed

      Onboard floppy drive                  JFDC             pins 2 & 3
      interface disabled                                       closed

     Onboard Game port disabled            JGAMS            pins 1 & 2
                                                               closed

      Onboard Game port enabled             JGAMS            pins 2 & 3
                                                               closed

     Onboard IDE interface                 JHDC             pins 1 & 2
      enabled                                                  closed

      Onboard IDE interface                 JHDC             pins 2 & 3
      disabled                                                 closed

     PS/2 mouse port enabled               JMRQ               Closed
      (IRQ12)

      PS/2 mouse port disabled              JMRQ                Open

     Pipeline mode disabled                JPIP                Open

      Pipeline mode enabled                 JPIP               Closed

     Monitor type select color              JVD             pins 2 & 3
                                                               closed

      Monitor type select                    JVD             pins 1 & 2
      monochrome                                               closed

                        ONBOARD VIDEO CONFIGURATION

     Onboard Video            IRQ            JVGAS             JVRQ

          Enabled           IRQ9          pins 1 & 2         Closed
                                             closed

           Enabled           None          pins 1 & 2          Open
                                             closed

          Disabled            N/A          pins 2 & 3           N/A
                                             closed

                         SERIAL PORT CONFIGURATION

    Modem        Port B        ISA      JC13     JC24          JMOD
   (JMOD)       (JCOM2)       Modem

  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   Daughterboard
                                         & 2      & 2

    COM3          COM2        None      pins 2   pins 1   Daughterboard
                                         & 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   Daughterboard
                                         & 2      & 3

    COM3          COM4        None      pins 2   pins 2   Daughterboard
                                         & 3      & 3

                 Note: JMOD is closed using a special jumper, JMODJ, that
                 connects pins 10 and 11. Permanent damage to the board
                 will occur if the JMODJ jumper is installed improperly.

            Pins designated should be in the closed position.

                        PARALLEL PORT CONFIGURATION

         LPT               IRQ              JLPS               JLRQ

         LPT1            IRQ7           pins 1 & 2         pins 2 & 3
                                           closed             closed

          LPT1            IRQ5           pins 1 & 2         pins 1 & 2
                                           closed             closed

          LPT2            IRQ7           pins 2 & 3         pins 2 & 3
                                           closed             closed

          LPT2            IRQ5           pins 2 & 3         pins 1 & 2
                                           closed             closed

                            DRAM CONFIGURATION

          Size                    Bank 0                   Bank 1

          512KB                (2) 256K x 9                 NONE

           1MB                 (2) 256K x 9             (2) 256K x 9

           2MB                  (2) 1M x 9                  NONE

          2.5MB                 (2) 1M x 9              (2) 256K x 9

           4MB                  (2) 1M x 9               (2) 1M x 9

           8MB                  (2) 4M x 9                  NONE

          12MB                  (2) 4M x 9               (2) 1M x 9

          16MB                  (2) 4M x 9               (2) 4M x 9

            Note:256K x 9 SIMMs may not be supported on certain boards.
            Board contains traces for additional SIMM banks. Additional
            SIMM sockets will not function if installed. A few boards had
            all 8 SIMM sockets factory installed, in which case BANKS 2 &
            3 are non-functional.

