usr/src/sys/vax/uba/adreg.h

/*      adreg.h 4.2     82/08/01        */

struct addevice {
        short int ad_csr;                       /* Control status register */
        short int ad_data;                      /* Data buffer */
};

#define AD_CHAN         ADIOSCHAN
#define AD_READ         ADIOGETW
#define ADIOSCHAN       _IOW(a, 0, int)         /* set channel */
#define ADIOGETW        _IOR(a, 1, int)         /* read one word */

/*
 * Unibus CSR register bits
 */

#define AD_START                01
#define AD_SCHMITT              020
#define AD_CLOCK                040
#define AD_IENABLE              0100
#define AD_DONE                 0200
#define AD_INCENABLE            040000
#define AD_ERROR                0100000