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- /*
- * MAC Version 2.0 Author : Vincent Hayward
- * School of Electrical Engineering
- * Purdue University
- * Dir : h
- * File : adc.h
- * Remarks : RTI 1250 not completly understood.
- * Usage : provide adc conversion macro, set device addr.
- */
-
-
- /*
- * This is the address setting for the RTI 1250
- */
-
- #define UNUSED (short *)0170400
- #define GAIN (short *)0170402
- #define MADR (short *)0170404
- #define DATA (short *)0170406
- #define EOC 0100000
-
- /*
- * ADCV is a macro to get a conversion done, because of problem
- * with the lsi11/23 of VALII it did not seem to work any more when
- * we installed VALII, probably a timing problem
- * that is why i kept the two versions
- *
- * ADCV(data, channel)
- */
-
- #ifdef VALII
- #define ADCV(d, ch) *MADR = ch; \
- *DATA = -1; \
- while (*MADR < 0) { \
- *MADR = EOC; \
- } \
- d = *DATA;
- #else
- #define ADCV(d, ch) *MADR = ch; \
- *DATA = -1; \
- do { \
- *MADR = EOC; \
- } while (*MADR > 0); \
- d = *DATA;
- #endif
-