usr/src/slowsys/h/mba.h

/* VAX Massbus adapter registers
 */

struct mba_regs {
        int mba_csr,
            mba_cr,
            mba_sr,
            mba_var,
            mba_bcr;
};

/* NOTE:
        mba_erb at displacement 0x400
        mba_as at displacement 0x410
        mba_map at displacement 0x800
 */

#define MBA0 0x80028000
#define MBA1 0x8002a000

#define MBA_ERB 0x400
#define MBA_MAP 0x800

#define MBA0_MAP MBA0 + 0x800
#define MBA1_MAP MBA1 + 0x800

#define MBAEBITS 0xe0770


#define MBAIE 0x4