AMERICAN RESEARCH CORPORATION

PROTURBO 88

Processor               8088
Processor Speed         4.77/9.54MHz
Chip Set                None
Max. Onboard DRAM       640KB
Cache                   None
BIOS                    ARC
Dimensions              330mm x 218mm
I/O Options             EGA port, floppy drive interface, game port,
                        parallel port, serial ports (2)
NPU Options             8087

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery            BAT       Parallel port              CN7

  Riser card                  CN1       Speaker                    CN9

  Floppy interface            CN2       Game port                 CN10

  EGA interface               CN3       Serial port 2             CN11

  Serial port 1               CN6       External keyboard          KB1

  Note:The location of the CPU, NPU and SW1 are unidentified.

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

  »   Factory configured - do not            J2               unknown
      alter

  »   Parallel port select LPT1              J7              pins 1 & 2
      interrupt IRQ7 at 378-37F                                closed

      Parallel port select LPT2              J7              pins 3 & 4
      interrupt IRQ5 at 278-27F                                closed

  »   Factory configured - do not            J8              pins 1 & 2
      alter                                                    closed

  »   Factory configured - do not            J8              pins 3 & 4
      alter                                                    closed

  »   Factory configured - do not            J10                N/A
      alter

  »   Factory configured - do not            J11                N/A
      alter

  »   Factory configured - do not            J12                N/A
      alter

  »   DRAM test at power-on                 SW1/1               Off
      enabled

      DRAM test at power-on                 SW1/1                On
      disabled

  »   NPU disabled                          SW1/2                On

      NPU enabled                           SW1/2               Off

  FLOPPY DRIVE A CONFIGURATION

   Type       SW1/3     SW1/4

   None        On         On

   360KB       On         On

   720KB       On        Off

   1.2MB       Off        On

  1.44MB       Off       Off

  FLOPPY DRIVE B CONFIGURATION

   Type       SW1/7     SW1/8

   None        On         On

   360KB       On         On

   720KB       On        Off

   1.2MB       Off        On

  1.44MB       Off       Off

              MONITOR CONFIGURATION

      Type            SW1/5            SW1/6

       EGA              On               On

  CGA (80 x 25)         On              Off

  CGA (40 x 25)        Off               On

   Monochrome          Off              Off