
TECMAR

MAESTRO

Card Type              Multi-I/O
Chipset                Unidentified
Maximum Onboard Memory 2.5MB DRAM
I/O Options            Parallel port, serial port
Data Bus               8-bit ISA

[Image]

                                CONNECTIONS

        Function            Label            Function             Label

  Serial port                CN1       Parallel port               CN2

            Note:A DB-25 connector for the serial port attaches to the
            board via a 26-pin header. The location of this header is
            unidentified.

                        USER CONFIGURABLE SETTINGS

                 Setting                    Label          Position

     Factory configured - do not alter      JPR         Unidentified

       PARALLEL PORT ADDRESS

  Setting      SW1/4      SW1/5

   LPT1:        Off         On

   LPT2:        On         Off

  Disabled      On          On

                     SERIAL PORT ADDRESS AND INTERRUPT

   Address      IRQ    JPR6/A     JPR6/B     JPR6/C     SW1/6     SW1/7

     3F8h        4      Open      Closed      Open       Off       Off
   (COM1:)

     2F8h        3     Closed      Open       Open        On       Off
   (COM2:)

     3E8h        4      Open       Open      Closed       On        On
   (COM3:)

     2E8h        3      Open       Open      Closed      Off        On
   (COM4:)

            Note:Both the 9-pin and 25-pin connectors access the same
            serial port.

                         SERIAL PORT CONFIGURATION

            Setting                                JPR4

              DTE                  Pins 1 & 2, 3 & 4, 6 & 7, 8 & 9, 11 &
                                            12, 13 & 14 closed

              DCE                  Pins 2 & 3, 4 & 5, 7 & 8, 9 & 10, 12 &
                                            13, 14 & 15 closed

                         DRAM (256KB ON MAINBOARD)

     Size       Bank 0      Bank 1      Bank 2      Bank 3       Bank 4

     0KB         None        None        None        None         None

    128KB        None       (18) 64K     None        None         None
                              x 1

    256KB        None       (18) 64K   (18) 64K      None         None
                              x 1        x 1

    384KB       (18) 64K    (18) 64K   (18) 64K      None         None
                  x 1         x 1        x 1

    512KB       (18) 64K    (18) 64K   (18) 64K    (18) 64K x     None
                  x 1         x 1        x 1           1

    640KB       (18) 64K    (18) 64K   (18) 64K    (18) 64K x  (18) 64K x
                  x 1         x 1        x 1           1           1

    896KB       (18) 64K    (18) 64K   (18) 64K    (18) 256K      None
                  x 1         x 1        x 1          x 1

    1408KB      (18) 64K    (18) 64K   (18) 64K    (18) 256K    (18) 256K
                  x 1         x 1        x 1          x 1         x 1

  DRAM SWITCHES (256KB ON MAINBOARD)

   Size     SW1/1     SW1/2    SW1/3

   0KB       Off       On        On

  128KB      Off       On       Off

  256KB      Off       On       Off

  384KB      Off       On       Off

  512KB      Off       On       Off

  640KB      Off       On       Off

  896KB      Off       Off      Off

  1408KB     Off       Off      Off

                         DRAM (512KB ON MAINBOARD)

    Size        Bank 0      Bank 1      Bank 2      Bank 3       Bank 4

     0KB         None        None        None        None         None

    128KB      (18) 64K      None        None        None         None
                 x 1

    256KB      (18) 64K    (18) 64K      None        None         None
                 x 1         x 1

    384KB      (18) 64K    (18) 64K     (18) 64K     None         None
                 x 1         x 1          x 1

    512KB      (18) 64K    (18) 64K     (18) 64K    (18) 64K      None
                 x 1         x 1          x 1         x 1

   640KB 1     (18) 64K    (18) 64K     (18) 64K    (18) 64K    (18) 64K
                 x 1         x 1          x 1         x 1         x 1

   640KB 2     (18) 64K    (18) 256K     None        None         None
                 x 1         x 1

   1152KB      (18) 64K    (18) 256K   (18) 256K     None         None
                 x 1         x 1          x 1

   1664KB      (18) 64K    (18) 256K   (18) 256K   (18) 256K      None
                 x 1         x 1          x 1         x 1

   2176KB      (18) 64K    (18) 256K   (18) 256K   (18) 256K    (18) 256K
                 x 1         x 1          x 1         x 1         x 1

    DRAM SWITCHES (512KB ON MAINBOARD)

   Size      SW1/1      SW1/2      SW1/3

    0KB       Off         On        On

   128KB       On         On        Off

   256KB       On         On        Off

   384KB       On         On        Off

   512KB       On         On        Off

  640KB 1      On         On        Off

  640KB 2      On        Off        Off

  1152KB       On        Off        Off

  1664KB       On        Off        Off

  2176KB       On        Off        Off

                         DRAM (640KB ON MAINBOARD)

    Size       Bank 0       Bank 1      Bank 2      Bank 3       Bank 4

    0KB         None         None        None        None         None

   128KB       (18) 64K      None        None        None         None
                 x 1

   256KB       (18) 64K    (18) 64K      None        None         None
                 x 1         x 1

   384KB       (18) 64K    (18) 64K     (18) 64K     None         None
                 x 1         x 1          x 1

  512KB 1      (18) 64K    (18) 64K     (18) 64K    (18) 64K      None
                 x 1         x 1          x 1         x 1

  512KB 2       None       (18) 256K     None        None         None
                             x 1

   1MB 1       (18) 64K    (18) 64K     (18) 64K    (18) 64K    (18) 256K
                 x 1         x 1          x 1         x 1         x 1

   1MB 2        None       (18) 256K   (18) 256K     None         None
                             x 1          x 1

   1.5MB        None       (18) 256K   (18) 256K   (18) 256K      None
                             x 1          x 1         x 1

    2MB         None       (18) 256K   (18) 256K   (18) 256K    (18) 256K
                             x 1          x 1         x 1         x 1

   2.5MB      (18) 256K    (18) 256K   (18) 256K   (18) 256K    (18) 256K
                 x 1         x 1          x 1         x 1         x 1

    DRAM SWITCHES (640KB ON MAINBOARD)

   Size      SW1/1      SW1/2      SW1/3

    0KB       Off         On        On

   128KB      Off        Off        On

   256KB      Off        Off        On

   384KB      Off        Off        On

  512KB 1     Off        Off        On

  512KB 2      On        Off        On

   1MB 1      Off        Off        On

   1MB 2       On        Off        On

   1.5MB       On        Off        On

    2MB        On        Off        On

   2.5MB       On        Off        On

