Measurement Computing PC104-DIO48 - Manual (Page 14)

Table 2-3. Mode 0 - Port I/O Select Codes
IN IN IN IN 155 9B 1 1 1 1
OUT IN IN IN 154 9A 0 1 1 1
IN OUT IN IN 153 99 1 0 1 1
OUT OUT IN IN 152 98 0 0 1 1
IN IN OUT IN 147 93 1 1 0 1
OUT IN OUT IN 146 92 0 1 0 1
IN OUT OUT IN 145 91 1 0 0 1
OUT OUT OUT IN 144 90 0 0 0 1
IN IN IN OUT 139 8B 1 1 1 0
OUT IN IN OUT 138 8A 0 1 1 0
IN OUT IN OUT 137 89 1 0 1 0
OUT OUT IN OUT 136 88 0 0 1 0
IN IN OUT OUT 131 83 1 1 0 0
OUT IN OUT OUT 130 82 0 1 0 0
IN OUT OUT OUT 129 81 1 0 0 0
OUT OUT OUT OUT 128 80 0 0 0 0
CL B CU A DEC HEX D0 D1 D3 D4
NOTE: D7 is always 1; D6, D5, and D2 are always 0.
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