IO Connections for P2
DB25 pin#             I/O   Pri. func    Sec. func        Chan     Sec. Pin func   Sec. Pin Dir

 1                      0   IOPort       SSerial          0        RXData0         (In)
14                      1   IOPort       SSerial          0        TXData0         (Out)
 2                      2   IOPort       SSerial          0        RXData1         (In)
15                      3   IOPort       SSerial          0        TXData1         (Out)
 3                      4   IOPort       StepGen          0        Step/Table1     (Out)
16                      5   IOPort       StepGen          0        Dir/Table2      (Out)
 4                      6   IOPort       StepGen          1        Step/Table1     (Out)
17                      7   IOPort       StepGen          1        Dir/Table2      (Out)
 5                      8   IOPort       StepGen          2        Step/Table1     (Out)
 6                      9   IOPort       StepGen          2        Dir/Table2      (Out)
 7                     10   IOPort       StepGen          3        Step/Table1     (Out)
 8                     11   IOPort       StepGen          3        Dir/Table2      (Out)
 9                     12   IOPort       StepGen          4        Step/Table1     (Out)
10                     13   IOPort       StepGen          4        Dir/Table2      (Out)
11                     14   IOPort       StepGen          5        Step/Table1     (Out)
12                     15   IOPort       StepGen          5        Dir/Table2      (Out)
13                     16   IOPort       PWM              0        PWM             (Out)

IO Connections for P1
DB25 pin#             I/O   Pri. func    Sec. func        Chan     Sec. Pin func   Sec. Pin Dir

 1                     17   IOPort       None           
14                     18   IOPort       None           
 2                     19   IOPort       None           
15                     20   IOPort       None           
 3                     21   IOPort       None           
16                     22   IOPort       None           
 4                     23   IOPort       None           
17                     24   IOPort       None           
 5                     25   IOPort       QCount           0        Quad-A          (In)
 6                     26   IOPort       QCount           0        Quad-B          (In)
 7                     27   IOPort       QCount           0        Quad-IDX        (In)
 8                     28   IOPort       QCount           1        Quad-A          (In)
 9                     29   IOPort       QCount           1        Quad-B          (In)
10                     30   IOPort       QCount           1        Quad-IDX        (In)
11                     31   IOPort       QCount           2        Quad-A          (In)
12                     32   IOPort       QCount           2        Quad-B          (In)
13                     33   IOPort       QCount           2        Quad-IDX        (In)