This macro is used to support boards with only 82C55 supported by DSCUD. This currently includes the MRC (Mercury) and EMMOPTO (Emerald-MM-OPTO).
Max Ports: 3 (bi-directional, programmable in 8-bit groups, TTL-compatible) similar to or is 82C55
Digital I/O ports require direction to be set with dscDIOSetConfig() before use.
All DIO lines power-up in input mode and have readback capability.
This page was last modified 23:17, 2 Aug 2005.
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