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31
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1 nam RBFDefs
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2 ttl Random Block File Manager Definitions
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3
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4 **********************
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5 * Modification History
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6 *
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7 * Date Changes Made by
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8 * -------- ------------------------------------------------------------ ---
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9 * 82/07/13 PD.Exten added to path descriptor rfd
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10 * 82/07/13 PE entries defined rfd
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11 * 82/07/15 V.FileHd inserted in drive static rfd
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12 * 82/09/10 Level One/ Level two cond added WGP
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13 * 82/09/17 Record Lock cond added WGP
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14 * 82/09/17 PD.SLE renamed to PD.Creat rfd
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15 * 82/09/17 V.DiskID, V.BMapSz, V.MapSct added for
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16 * smart multi-sector bitmap searching rfd
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17 * 82/09/20 reserved areas added in static storage.
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18 * 83/06/07 Added InDriver flag in PD.SMF. rfd
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19 * 83/06/13 Added PE.Req tmp save for PE.Lock rfd
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20 * 83/08/08 reserved PD.SToff for Japanese rfd
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21 * 83/11/19 Added V.ResBit in drive tables. rfd
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22 * 83/12/12 Added PE.Prior to save process priority. rfd
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23 * 83/12/13 Added BufBusy bit in state flag (PD.SMF) rfd
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24 * 84/07/06 Added Bit Definitions for DD.FMT MGH
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25 * 87/06/23 Updated with Dev Desc Info KKD
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26
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27 *******************************
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28 * RBF Device Descriptor Offsets
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29 *
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30 org M$DTyp
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31 rmb 1 Device type (IT.DTP) (1=RBF)
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32 IT.DRV rmb 1 Drive number
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33 IT.STP rmb 1 Step rate
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34 IT.TYP rmb 1 Disk device type (5" 8" other)
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35 IT.DNS rmb 1 Density capability
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36 IT.CYL rmb 2 Number of cylinders
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37 IT.SID rmb 1 Number of surfaces
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38 IT.VFY rmb 1 0=verify disk writes
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39 IT.SCT rmb 2 Default sectors/track
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40 IT.T0S rmb 2 Default sectors/track tr00,s0
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41 IT.ILV rmb 1 Sector interleave offset
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42 IT.SAS rmb 1 Segment allocation size
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43
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44 *************************************
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45 * IT.TYP/IT.DNS/IT.STP definitions
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46 *
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47 TYP.5 equ %00000000 5" media
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48 TYP.8 equ %00000001 8" media
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49 TYP.CCF equ %00100000 CoCo format
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50 TYP.NCCF equ %00000000 Non-CoCo format
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51 TYP.SOF equ %00000000 Standard OS-9 format
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52 TYP.NSF equ %01000000 Non-standard format
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53 TYP.FLP equ %00000000 Floppy disk
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54 TYP.HARD equ %10000000 Hard disk
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55
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56 DNS.FM equ %00000000 Single-density (FM)
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57 DNS.MFM equ %00000001 Double-density (MFM)
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58 DNS.STD equ %00000000 Single track density (48 tpi)
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59 DNS.DTD equ %00000010 Single track density (96 tpi)
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60
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61 STP.30ms equ 0 30ms step rate
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62 STP.20ms equ 1 20ms step rate
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63 STP.12ms equ 2 12ms step rate
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64 STP.6ms equ 3 6ms step rate
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65
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66 *************************************
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67 * Random Block Path Descriptor Format
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68 *
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69 org PD.FST
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70 PD.SMF rmb 1 State flags
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71 PD.CP rmb 4 Current logical byte position
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72 PD.SIZ rmb 4 File size
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73 PD.SBL rmb 3 Segment beginning lsn
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74 PD.SBP rmb 3 Segment beginning psn
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75 PD.SSZ rmb 3 Segment size
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76 PD.DSK rmb 2 Disk id
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77 PD.DTB rmb 2 Drive table ptr
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78 org PD.OPT
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79 rmb 1 Device type
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80 PD.DRV rmb 1 Drive number
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81 PD.STP rmb 1 Step rate
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82 PD.TYP rmb 1 Disk device type (5" 8" other)
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83 PD.DNS rmb 1 Density capability
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84 PD.CYL rmb 2 Number of cylinders
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85 PD.SID rmb 1 Number of surfaces
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86 PD.VFY rmb 1 0=verify disk writes
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87 PD.SCT rmb 2 Default sectors/track
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88 PD.T0S rmb 2 Default sectors/track tr00,s0
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89 PD.ILV rmb 1 Sector interleave offset
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90 PD.SAS rmb 1 Segment allocation size
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91 PD.TFM rmb 1 DMA Transfer Mode
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92 PD.Exten rmb 2 Path Extension (PE) for record locking
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93 PD.SToff rmb 1 Sector/Track offsets (for "foreign" disk formats)
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94 PD.ATT rmb 1 File attributes
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95 PD.FD rmb 3 File descriptor psn
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96 PD.DFD rmb 3 Directory file descriptor psn
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97 PD.DCP rmb 4 File directory entry ptr
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98 PD.DVT rmb 2 User readable dev tbl ptr
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99
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100 * State Flags
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101 BUFMOD equ $01 Buffer modified
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102 SINBUF equ $02 Sector in buffer
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103 FDBUF equ $04 File descriptor in buffer
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104 *EOFSEC equ $08 End of file sector
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105 *EOF equ $10 End of file
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106 InDriver equ $20 Currently in Disk Driver, or queued
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107 BufBusy equ $40 Buffer is currently busy
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108
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109 ifne Level-1
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110 ************************************
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111 * Random Block Path Extension Format
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112 *
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113 org 0
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114 PE.PE rmb 1 PE path number
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115 PE.PDptr rmb 2 back ptr to this PE's Path Descriptor
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116 PE.NxFil rmb 2 Drive Open-File list ptr
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117 PE.Confl rmb 2 circular File Conflict list
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118 PE.Lock rmb 1 Path lockout status
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119 PE.LoLck rmb 4 Low Locked Logical addr
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120 PE.HiLck rmb 4 High Locked Logical addr
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121 PE.Wait rmb 2 PE ptr to (next) locked-out PE
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122 PE.TmOut rmb 2 Max ticks to wait for locked segment
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123 PE.Owner rmb 1 Process ID of owner of locked segment
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124 PE.Req rmb 1 temp for PE.Lock in GAIN when LockSeg fails
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125 PE.Prior rmb 1 tmp for process priority while in driver
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126 rmb 32-. reserved
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127 PE.FilNm rmb 32 temp for filename during directory search
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128
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129 * PE.Lock status codes
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130 Unlocked equ 0 no portion of file is locked
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131 RcdLock equ 1 record from LoLck to HiLck locked
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132 FileLock equ 2 entire file locked
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133 EofLock equ 4 End of file is locked
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134 endc
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135
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136 ***********************
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137 * LSN0 Disk Data Format
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138 *
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139 org 0
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140 DD.TOT rmb 3 Total number of sectors
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141 DD.TKS rmb 1 Track size in sectors
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142 DD.MAP rmb 2 Number of bytes in allocation bit map
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143 DD.BIT rmb 2 Number of sectors/bit
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144 DD.DIR rmb 3 Address of root directory fd
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145 DD.OWN rmb 2 Owner
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146 DD.ATT rmb 1 Attributes
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147 DD.DSK rmb 2 Disk id
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148 DD.FMT rmb 1 Disk format; density/sides
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149 DD.SPT rmb 2 Sectors/track
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150 DD.RES rmb 2 Reserved for future use
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151 DD.SIZ equ . Device descriptor minimum size
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152 DD.BT rmb 3 System bootstrap sector
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153 DD.BSZ rmb 2 Size of system bootstrap
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154 DD.DAT rmb 5 Creation date
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155 DD.NAM rmb 32 Volume name
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156 DD.OPT rmb 32 option area
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157
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158 * DD.FMT Bit Definitions
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159 FMT.SIDE equ %00000001 Single Side=0, Double Side=1
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160 FMT.DNS equ %00000010 Single DNS=0, Double DNS=1
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161 FMT.TDNS equ %00000100 48tpi=0, 96tpi=1
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162 FMT.T0DN equ %00100000 Track 0 DNS, see FMT.DNS
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163
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164 ************************
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165 * File Descriptor Format
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166 *
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167 org 0
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168 FD.ATT rmb 1 Attributes
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169 FD.OWN rmb 2 Owner
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170 FD.DAT rmb 5 Date last modified
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171 FD.LNK rmb 1 Link count
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172 FD.SIZ rmb 4 File size
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173 FD.Creat rmb 3 Segment list extension
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174 FD.SEG equ . Beginning of segment list
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175 * Segment List Entry Format
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176 org 0
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177 FDSL.A rmb 3 Segment beginning physical sector number
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178 FDSL.B rmb 2 Segment size
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179 FDSL.S equ . Segment list entry size
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180 FD.LS1 equ FD.SEG+((256-FD.SEG)/FDSL.S-1)*FDSL.S
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181 FD.LS2 equ (256/FDSL.S-1)*FDSL.S
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182 MINSEC set 16
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183
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184 ************************
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185 * Directory Entry Format
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186 *
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187 org 0
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188 DIR.NM rmb 29 File name
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189 DIR.FD rmb 3 File descriptor physical sector number
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190 DIR.SZ equ . Directory record size
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191
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192 ****************
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193 * Static Storage
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194 *
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195 * Overall Disk Static Storage
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196 *
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197 * Note: This does not reserve any memory for drive tables. Each Driver is
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198 * responsible for reserving sufficient memory for the appropriate
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199 * number of tables.
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200 *
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201 org V.USER Reserve required ($06)
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202 V.NDRV rmb 1 Number of drives ($07)
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203 rmb 8 reserved ($08)
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204 DRVBEG equ . Beginning of drive tables ($10)
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205 *
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206 * Global Storage For Disk Drive Tables
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207 * Each Table Contains The First 'DD.Siz' Bytes
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208 * From Sector 0, And The Current Track, Stepping Rate,
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209 * Bit-Map Use Flag, And Disk Type
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210 *
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211 org 0
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212 rmb DD.SIZ Device descriptor, sector 0
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213 V.TRAK rmb 2 Current track
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214 V.BMB rmb 1 Bit-map use flag
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215 V.FileHd rmb 2 open file list for this drive
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216 V.DiskID rmb 2 Disk ID
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217 V.BMapSz rmb 1 Bitmap Size
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218 V.MapSct rmb 1 lowest reasonable bitmap sector
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219 V.ResBit rmb 1 reserved bitmap sector (for compaction)
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220 V.ScTkOf rmb 1 Sector/Track byte (Combined from descriptor)
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221 V.ScOfst rmb 1 Sector offset split from byte above
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222 V.TkOfst rmb 1 Track offset split from byte above
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223 rmb 4 reserved
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224 DRVMEM equ .
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225
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