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- /*
- ** $VER: ioblix/extfifo.h 37.3 (7.4.99)
- **
- ** include file for access to IOBlix onboard FIFOs
- **
- ** (C) Copyright 1998,1999 Thore Böckelmann
- ** All Rights Reserved.
- */
-
- #ifndef IOBLIX_EXTFIFO_H
- #define IOBLIX_EXTFIFO_H 1
-
- /* status flags for external FIFOs */
- /* all flags are negative logic, ie WFIFOF_FULL set means FIFO is NOT full */
-
- #define EXTFIFO_READ 0
- #define EXTFIFO_WRITE 0
- #define EXTFIFO_STATUS 1
- #define EXTFIFO_REG_COUNT 2
-
- struct ExtFIFORegisters {
- ULONG er_RegCount;
- volatile UBYTE *er_Regs[EXTFIFO_REG_COUNT];
- };
-
- #define fifo_read er_Regs[EXTFIFO_READ]
- #define fifo_write er_Regs[EXTFIFO_WRITE]
- #define fifo_status er_Regs[EXTFIFO_STATUS]
-
- #define RFIFOB_FULL 0
- #define RFIFOF_FULL (1 << RFIFOB_FULL)
- #define RFIFOB_HFULL 1
- #define RFIFOF_HFULL (1 << RFIFOB_HFULL)
- #define RFIFOB_EMPTY 2
- #define RFIFOF_EMPTY (1 << RFIFOB_EMPTY)
-
- #define WFIFOB_FULL 4
- #define WFIFOF_FULL (1 << WFIFOB_FULL)
- #define WFIFOB_HFULL 5
- #define WFIFOF_HFULL (1 << WFIFOB_HFULL)
- #define WFIFOB_EMPTY 6
- #define WFIFOF_EMPTY (1 << WFIFOB_EMPTY)
-
- #endif /* IOBLIX_EXTFIFO_H */
-
-