Onyx-MM-DIO

This product is supported for DSCUD 8.0 and above.

Board Initialization

To use the Onyx-MM-DIO board in an appllication using the UD, the dscInitBoard function should use the board macro DSC_OMMDIO. This is shown in the example below.

dscInitBoard( DSC_OMMDIO , &dsccb, &board );

Digital I/O

Ports:	6 8-bit bidirectional ports (2 82C55 chips) Digital I/O ports on Onyx-MM-DIO require direction to be set with dscDIOSetConfig() before use. One configuration byte is required for each 82C55 chip. All DIO lines power-up in input mode and have readback capability. All DIO lines have 10K Ohm pull-up resistors. Interrupts Not supported on this board.

Onyx-MM-DIO Universal Driver Functions

• dscDIOClearBit()

• dscDIOInputBit()

• dscDIOInputByte()

• dscDIOOutputBit()

• dscDIOOutputByte()

• dscDIOSetBit()

• dscDIOSetConfig()