1 /* rlreg.h 4.1 83/02/08 */ 2 3 struct rldevice { 4 short rlcs; /* control status */ 5 u_short rlba; /* bus address */ 6 union { /* disk address */ 7 u_short seek; /* disk seek address */ 8 u_short rw; /* disk read/write address */ 9 u_short getstat; /* get disk status command */ 10 } rlda; 11 union { /* multi-purpose register */ 12 u_short getstat; /* get status */ 13 u_short readhdr; /* read header */ 14 u_short rw; /* read/write word count */ 15 } rlmp; 16 }; 17 18 #define NRLCYLN 512 /* number of cylinders per disk */ 19 #define NRLTRKS 2 /* number of tracks per cylinder */ 20 #define NRLSECT 40 /* number of sectors per track */ 21 #define NRLBPSC 256 /* bytes per sector */ 22 23 /* rlcs */ 24 /* commands */ 25 #define RL_NOOP 0000000 /* no-operation */ 26 #define RL_WCHECK 0000002 /* write check */ 27 #define RL_GETSTAT 0000004 /* get status */ 28 #define RL_SEEK 0000006 /* seek */ 29 #define RL_RHDR 0000010 /* read header */ 30 #define RL_WRITE 0000012 /* write data */ 31 #define RL_READ 0000014 /* read data */ 32 #define RL_RDNCK 0000016 /* read data without hdr check */ 33 34 #define RL_DRDY 0000001 /* When set indicates drive ready */ 35 #define RL_BAE 0000060 /* UNIBUS address bits 16 & 17 */ 36 #define RL_IE 0000100 /* interrupt enable */ 37 #define RL_CRDY 0000200 /* controller ready */ 38 #define RL_DS0 0000400 /* drive select 0 */ 39 #define RL_DS1 0001000 /* drive select 1 */ 40 #define RL_OPI 0002000 /* operation incomplete */ 41 #define RL_DCRC 0004000 /* CRC error occurred */ 42 #define RL_DLT 0010000 /* data late or header not found */ 43 #define RL_NXM 0020000 /* non-existant memory */ 44 #define RL_DE 0040000 /* selected drive flagged an error */ 45 #define RL_ERR 0100000 /* composite error */ 46 47 #define RL_DCRDY (RL_DRDY | RL_CRDY) 48 49 #define RLCS_BITS \ 50 "\10\20ERR\17DE\16NXM\15DLT\14DCRC\13OPI\1DRDY" 51 52 /* da_seek */ 53 #define RLDA_LOW 0000001 /* lower cylinder seek */ 54 #define RLDA_HGH 0000005 /* higher cylinder seek */ 55 #define RLDA_HSU 0000000 /* upper head select */ 56 #define RLDA_HSL 0000020 /* lower head select */ 57 #define RLDA_CA 0177600 /* cylinder address */ 58 59 /* da_rw */ 60 #define RLDA_SA 0000077 /* sector address */ 61 #define RLDA_HST 0000000 /* upper head select */ 62 #define RLDA_HSB 0000100 /* lower head select */ 63 64 /* da_getstat */ 65 66 #define RL_GSTAT 0000003 /* Get status */ 67 #define RL_RESET 0000013 /* get status with reset */ 68 69 /* mp_getstat */ 70 #define RLMP_STA 0000001 /* drive state: load cartridge */ 71 #define RLMP_STB 0000002 /* drive state: brush cycle */ 72 #define RLMP_STC 0000004 /* drive state: seek */ 73 #define RLMP_BH 0000010 /* set when brushes are home */ 74 #define RLMP_HO 0000020 /* set when brushes over the disk */ 75 #define RLMP_CO 0000040 /* set when cover open */ 76 #define RLMP_HS 0000100 /* indicates selected head: 77 0 upper head 78 1 lower head */ 79 #define RLMP_DT 0000200 /* indicates drive type: 80 0 RL01 81 1 RL02 */ 82 #define RLMP_DSE 0000400 /* set on multiple drive selection */ 83 #define RLMP_VC 0001000 /* set on pack mounted and spining */ 84 #define RLMP_WGE 0002000 /* write gate error */ 85 #define RLMP_SPE 0004000 /* spin speed error */ 86 #define RLMP_SKTO 0010000 /*\* seek time out error */ 87 #define RLMP_WL 0020000 /* set on protected drive */ 88 #define RLMP_CHE 0040000 /* current head error */ 89 #define RLMP_WDE 0100000 /* write data error */ 90 91 /* mp_rhc */ 92 #define RLMP_SA 0000077 /* sector address */ 93 #define RLMP_HS 0000100 /* head select 94 0 upper head 95 1 lower head */ 96 #define RLMP_CA 0177600 /* cylinder address */ 97 98 /* check these bits after a get status and reset */ 99 #define RLMP_STATUS (RLMP_WDE|RLMP_CHE|RLMP_SKTO|RLMP_SPE|RLMP_WGE \ 100 |RLMP_VC|RLMP_DSE|RLMP_CO|RLMP_HO|RLMP_BH|RLMP_STC|RLMP_STB|RLMP_STA) 101 102 /* these are the bits that should be on in the above check */ 103 #define RLMP_STATOK (RLMP_HO|RLMP_BH|RLMP_STC|RLMP_STA) 104 105 /* mp_rw */ 106 #define RLMP_WC 0017777 /* word count 2's complement */ 107 108 #define RLER_BITS \ 109 "\10\20WDE\17CHE\16WL\15SKTO\14SPE\13WGE\12VC\11DSE\ 110 \10DT\7HS\6CO\5HO\4BH\3STC\2STB\1STA" 111