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1.1 root 1: /*
2: * Unibus rm emulation via sc21:
3: * registers and bits.
4: */
5:
6: struct updevice
7: {
8: u_short upcs1; /* control and status register 1 */
9: short upwc; /* word count register */
10: u_short upba; /* UNIBUS address register */
11: u_short upda; /* desired address register */
12: u_short upcs2; /* control and status register 2 */
13: u_short upds; /* drive Status */
14: u_short uper1; /* error register 1 */
15: u_short upas; /* attention summary */
16: u_short upla; /* look ahead */
17: u_short updb; /* data buffer */
18: u_short upmr; /* maintenance */
19: u_short updt; /* drive type */
20: u_short upsn; /* serial number */
21: u_short upof; /* offset register */
22: u_short updc; /* desired cylinder address register */
23: u_short uphr; /* holding register */
24: u_short upmr2; /* maintenance register 2 */
25: u_short uper2; /* error register 2 */
26: u_short upec1; /* burst error bit position */
27: u_short upec2; /* burst error bit pattern */
28: };
29:
30: /* Other bits of upcs1 */
31: #define UP_SC 0100000 /* special condition */
32: #define UP_TRE 0040000 /* transfer error */
33: #define UP_PSEL 0010000 /* port select */
34: #define UP_DVA 0004000 /* drive available */
35: /* bits 8 and 9 are the extended address bits */
36: #define UP_RDY 0000200 /* controller ready */
37: #define UP_IE 0000100 /* interrupt enable */
38: /* bits 5-1 are the command */
39: #define UP_GO 0000001
40:
41: /* commands */
42: #define UP_NOP 000
43: #define UP_SEEK 004 /* seek */
44: #define UP_RECAL 006 /* recalibrate */
45: #define UP_DCLR 010 /* drive clear */
46: #define UP_RELEASE 012 /* release */
47: #define UP_OFFSET 014 /* offset */
48: #define UP_RTC 016 /* return to center-line */
49: #define UP_PRESET 020 /* read-in preset */
50: #define UP_PACK 022 /* pack acknowledge */
51: #define UP_DMABAND 024 /* dma bandwidth set */
52: #define UP_SEARCH 030 /* search */
53: #define UP_WCDATA 050 /* write check data */
54: #define UP_WCHDR 052 /* write check header and data */
55: #define UP_WCOM 060 /* write */
56: #define UP_WHDR 062 /* write header and data */
57: #define UP_RCOM 070 /* read data */
58: #define UP_RHDR 072 /* read header and data */
59: #define UP_BOOT 074 /* boot */
60: #define UP_FORMAT 076 /* format */
61:
62: /* upcs2 */
63: #define UPCS2_DLT 0100000 /* data late */
64: #define UPCS2_WCE 0040000 /* write check error */
65: #define UPCS2_UPE 0020000 /* UNIBUS parity error */
66: #define UPCS2_NED 0010000 /* nonexistent drive */
67: #define UPCS2_NEM 0004000 /* nonexistent memory */
68: #define UPCS2_PGE 0002000 /* programming error */
69: #define UPCS2_MXF 0001000 /* missed transfer */
70: #define UPCS2_MDPE 0000400 /* massbus data parity error (0) */
71: #define UPCS2_OR 0000200 /* output ready */
72: #define UPCS2_IR 0000100 /* input ready */
73: #define UPCS2_CLR 0000040 /* controller clear */
74: #define UPCS2_PAT 0000020 /* parity test */
75: #define UPCS2_BAI 0000010 /* address increment inhibit */
76: /* bits 0-2 are drive select */
77:
78: #define UPCS2_BITS \
79: "\10\20DLT\17WCE\16UPE\15NED\14NEM\13PGE\12MXF\11MDPE\
80: \10OR\7IR\6CLR\5PAT\4BAI"
81:
82: /* upds */
83: #define UPDS_ATA 0100000 /* attention active */
84: #define UPDS_ERR 0040000 /* composite drive error */
85: #define UPDS_PIP 0020000 /* positioning in progress */
86: #define UPDS_MOL 0010000 /* medium on line */
87: #define UPDS_WRL 0004000 /* write locked */
88: #define UPDS_LST 0002000 /* last sector transferred */
89: #define UPDS_PGM 0001000 /* programmable */
90: #define UPDS_DPR 0000400 /* drive present */
91: #define UPDS_DRY 0000200 /* drive ready */
92: #define UPDS_VV 0000100 /* volume valid */
93: /* bits 1-5 are spare */
94: #define UPDS_OM 0000001 /* offset mode */
95:
96: #define UPDS_DREADY (UPDS_DPR|UPDS_DRY|UPDS_MOL|UPDS_VV)
97:
98: #define UPDS_BITS \
99: "\10\20ATA\17ERR\16PIP\15MOL\14WRL\13LST\12PGM\11DPR\10DRY\7VV\1OM"
100:
101: /* uper1 */
102: #define UPER1_DCK 0100000 /* data check */
103: #define UPER1_UNS 0040000 /* drive unsafe */
104: #define UPER1_OPI 0020000 /* operation incomplete */
105: #define UPER1_DTE 0010000 /* drive timing error */
106: #define UPER1_WLE 0004000 /* write lock error */
107: #define UPER1_IAE 0002000 /* invalid address error */
108: #define UPER1_AOE 0001000 /* address overflow error */
109: #define UPER1_HCRC 0000400 /* header crc error */
110: #define UPER1_HCE 0000200 /* header compare error */
111: #define UPER1_ECH 0000100 /* ecc hard error */
112: #define UPER1_WCF 0000040 /* write clock fail (0) */
113: #define UPER1_FER 0000020 /* format error */
114: #define UPER1_PAR 0000010 /* parity error */
115: #define UPER1_RMR 0000004 /* register modification refused */
116: #define UPER1_ILR 0000002 /* illegal register */
117: #define UPER1_ILF 0000001 /* illegal function */
118:
119: #define UPER1_BITS \
120: "\10\20DCK\17UNS\16OPI\15DTE\14WLE\13IAE\12AOE\11HCRC\10HCE\
121: \7ECH\6WCF\5FER\4PAR\3RMR\2ILR\1ILF"
122:
123: /* uphr */
124: /* write these int uphr and then read back values */
125: #define UPHR_MAXCYL 0100027 /* max cyl address */
126: #define UPHR_MAXTRAK 0100030 /* max track address */
127: #define UPHR_MAXSECT 0100031 /* max sector address */
128:
129: /* uper2 */
130: #define UPER2_BSE 0100000 /* bad sector error */
131: #define UPER2_SKI 0040000 /* seek incomplete */
132: #define UPER2_OPE 0020000 /* operator plug error */
133: #define UPER2_IVC 0010000 /* invalid command */
134: #define UPER2_LSC 0004000 /* loss of sector clock */
135: #define UPER2_LBC 0002000 /* loss of bit clock */
136: #define UPER2_MDS 0001000 /* multiple drive select */
137: #define UPER2_DCU 0000400 /* dc power unsafe */
138: #define UPER2_DVC 0000200 /* device check */
139: #define UPER2_ACU 0000100 /* ac power unsafe */
140: /* bits 5 and 4 are spare */
141: #define UPER2_DPE 0000010 /* data parity error (0) */
142: /* bits 2-0 are spare */
143:
144: #define UPER2_BITS \
145: "\10\20BSE\17SKI\16OPE\15IVC\14LSC\13LBC\12MDS\11DCU\10DVC\7ACU\4DPE"
146:
147: /* upof */
148: #define UPOF_FMT22 0010000 /* 16 bit format */
149: #define UPOF_ECI 0004000 /* ecc inhibit */
150: #define UPOF_HCI 0002000 /* header compare inhibit */
151:
152: /* THE SC21 ACTUALLY JUST IMPLEMENTS ADVANCE/RETARD... */
153: #define UPOF_P400 0020 /* +400 uinches */
154: #define UPOF_M400 0220 /* -400 uinches */
155: #define UPOF_P800 0040 /* +800 uinches */
156: #define UPOF_M800 0240 /* -800 uinches */
157: #define UPOF_P1200 0060 /* +1200 uinches */
158: #define UPOF_M1200 0260 /* -1200 uinches */
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