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annotate 3rdparty/fmgrs/msf/msfdefs @ 2876:1ca5c484c7a7

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joydrv_6551L.asm: Remove spurious ! (OR) from expression
author Tormod Volden <debian.tormod@gmail.com>
date Sun, 24 Nov 2013 15:48:17 +0100
parents 3020c1c93860
children b3d423ebd111
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
72
3020c1c93860 MSF defs file found, now MSF can be made
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1 *********************************************************************
3020c1c93860 MSF defs file found, now MSF can be made
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2 * Defs for the MSDos file manager
3020c1c93860 MSF defs file found, now MSF can be made
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3
3020c1c93860 MSF defs file found, now MSF can be made
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4 * system direct page for MSF file manager
3020c1c93860 MSF defs file found, now MSF can be made
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5
3020c1c93860 MSF defs file found, now MSF can be made
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6 D.MSF equ $7c pointer to linked list of MSF paths
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7
3020c1c93860 MSF defs file found, now MSF can be made
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8 * path table (static storage) offsets
3020c1c93860 MSF defs file found, now MSF can be made
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9
3020c1c93860 MSF defs file found, now MSF can be made
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10 *** rev 2.2
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11 V.DNS equ $1F disk density 8=Hi-density, 4=96tpi, 0=48tpi
3020c1c93860 MSF defs file found, now MSF can be made
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12 V.BPB equ $20 pointer to disk information (64 bytes)
3020c1c93860 MSF defs file found, now MSF can be made
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13 ***
3020c1c93860 MSF defs file found, now MSF can be made
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14
3020c1c93860 MSF defs file found, now MSF can be made
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15 V.FLG equ $22 FAT must be read if NE
3020c1c93860 MSF defs file found, now MSF can be made
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16 V.CNT equ $23 number of paths open to this device
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17 V.FAT equ $24 point to FAT (in reserved section of device table)
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18
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19 *** rev 2.1
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20 V.FS equ V.FLG FAT size/256 (V.FLG no longer used)
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21 ***
3020c1c93860 MSF defs file found, now MSF can be made
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22
3020c1c93860 MSF defs file found, now MSF can be made
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23 DRVBEG2 set $0e offset from beg. of device static storage to 1st drive table
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24
3020c1c93860 MSF defs file found, now MSF can be made
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25 modmem equ 0
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26
3020c1c93860 MSF defs file found, now MSF can be made
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27 type set FlMgr+Objct
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28 revs set Reent+1
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29
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30 SS.DREAD set $80 direct sector read/write
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31 SS.SREAD equ $84 direct sector read/write in system space
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32 *SS.ATTR equ $85 get/set file attribute
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33 SS.RENAM equ $86 rename file
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34 SS.ALLOW equ $87 allow writing to disk or directory
3020c1c93860 MSF defs file found, now MSF can be made
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35
3020c1c93860 MSF defs file found, now MSF can be made
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36 E$BadFAT equ 255
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37
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38 EOL equ 13
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39 CR equ EOL
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40 SPC equ 32
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41 SP equ SPC
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42 MSDEOF equ $1A end of line character for MSDOS text files
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43
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44 ********************************************************
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45 * MSDOS directory entry offsets
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46 *
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47 msd.name equ 0 offset to file name
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48 msd.ext equ 8 offset to file extension
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49 msd.attr equ 11 offset to file attribute
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50 msd.res equ 12 offset to reserved bytes
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51 msd.time equ 22 offset to time
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52 msd.date equ 24 offset to date
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53 msd.strt equ 26 offset to starting cluster number
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54 msd.size equ 28 offset to file size
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55
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56 MSDSIZE equ 32 size of directory entry
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57 SECSIZE equ 512 size of an MSDOS sector
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58 DIRSIZE equ 64 size of directory entry in memory
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59
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60 * name is 8 bytes
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61 * extention is 3 bytes
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62 * attribute:
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63 attr.RO equ 1 - read only
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64 attr.HD equ 2 - hidden file (excluded from search)
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65 attr.SY equ 4 - system file (excluded from search)
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66 attr.VL equ 8 - volume label
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67 attr.DR equ $10 - subdirectory
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68 attr.AR equ $20 - archive bit (set if file has been written and closed)
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69 *
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70 * time:
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71 * H H H H H M M M M M M S S S S S
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72 * 7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8
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73 *
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74 * date:
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75 * Y Y Y Y Y Y Y M M M M D D D D D
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76 * 7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8
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77 *
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78 * starting cluster:
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79 * two bytes, LSB first
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80 *
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81 * file size:
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82 * 4 bytes (byte 0, 1, 2, 3)
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83 ******************************************************
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84
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85 ******************************************************
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86 * FAT ID byte:
3020c1c93860 MSF defs file found, now MSF can be made
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87 * bit 3-7 set
3020c1c93860 MSF defs file found, now MSF can be made
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88 * bit 2 - clear if 80 tracks
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89 * bit 1 - set if media has 8 sectors/track (1 sector/FAT)
3020c1c93860 MSF defs file found, now MSF can be made
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90 * bit 0 - set if media has two heads (112 directory entries)
3020c1c93860 MSF defs file found, now MSF can be made
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91
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92 ******************************************************
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93
3020c1c93860 MSF defs file found, now MSF can be made
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94 ******************************************************
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95 * File manager path descriptor offsets
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96 *
3020c1c93860 MSF defs file found, now MSF can be made
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97 org 0
3020c1c93860 MSF defs file found, now MSF can be made
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98
3020c1c93860 MSF defs file found, now MSF can be made
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99 msp.path rmb 1 equ PD.PD path number
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100 msp.mod rmb 1 equ PD.MOD file access mode
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101 msp.cnt rmb 1 equ PD.CNT dupe path count
3020c1c93860 MSF defs file found, now MSF can be made
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102 msp.dev rmb 2 equ PD.DEV address of device table
3020c1c93860 MSF defs file found, now MSF can be made
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103 msp.proc rmb 1 equ PD.CPR process ID to which this path belongs
3020c1c93860 MSF defs file found, now MSF can be made
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104 msp.rgs rmb 2 equ PD.RGS passed registers
3020c1c93860 MSF defs file found, now MSF can be made
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105 msp.buf rmb 2 equ PD.BUF address of buffer
3020c1c93860 MSF defs file found, now MSF can be made
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106 msp.sest rmb 1 equ PD.SMF current sector status
3020c1c93860 MSF defs file found, now MSF can be made
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107 msp.pos rmb 3 current logical file position
3020c1c93860 MSF defs file found, now MSF can be made
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108 msp.lolk rmb 3 start of lock (logical sector)
3020c1c93860 MSF defs file found, now MSF can be made
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109 msp.lksz rmb 3 size of lock
3020c1c93860 MSF defs file found, now MSF can be made
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110 msp.dtb rmb 2 address of drive table
3020c1c93860 MSF defs file found, now MSF can be made
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111 msp.wrt rmb 1 NE-don't allow writing to path
3020c1c93860 MSF defs file found, now MSF can be made
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112 msp.ncpr rmb 1 value to store in V.BUSY after using driver
3020c1c93860 MSF defs file found, now MSF can be made
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113 msp.end rmb 2 number of last logical sector+1 of root or entire disk
3020c1c93860 MSF defs file found, now MSF can be made
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114
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115 rmb 6 space left til option table
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116
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117 org $30
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118
3020c1c93860 MSF defs file found, now MSF can be made
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119 msp.next rmb 2 address of next MSDOS path descriptor
3020c1c93860 MSF defs file found, now MSF can be made
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120 msp.prev rmb 2 address of prev MSDOS path descriptor for SAME file
3020c1c93860 MSF defs file found, now MSF can be made
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121 msp.dir rmb 2 address of directory entry in memory
3020c1c93860 MSF defs file found, now MSF can be made
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122 msp.dnxt rmb 2 next path to same file
3020c1c93860 MSF defs file found, now MSF can be made
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123 msp.dprv rmb 2 previous path to same file
3020c1c93860 MSF defs file found, now MSF can be made
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124
3020c1c93860 MSF defs file found, now MSF can be made
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125 msp.cls rmb 2 current cluster number
3020c1c93860 MSF defs file found, now MSF can be made
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126 msp.sec rmb 2 current logical sector number
3020c1c93860 MSF defs file found, now MSF can be made
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127 msp.clss rmb 1 current cluster sector number (0 or 1)
3020c1c93860 MSF defs file found, now MSF can be made
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128
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129 *******************************************************
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130 * sector status (msp.sest) codes
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131
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132 SECGOOD equ 1 sector contains next data to be read
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133 SECREAD equ 2 sector has been completely read
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134 * (next sector needs to be read before next READ)
3020c1c93860 MSF defs file found, now MSF can be made
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135 SECUPD equ 4 sector has been written to
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136 SECBUF equ 8 sector msp.sec is in the buffer (PD.BUF)
3020c1c93860 MSF defs file found, now MSF can be made
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137 SECEXP equ $10 sector does not need to be read
3020c1c93860 MSF defs file found, now MSF can be made
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138
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139 *******************************************************
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140 * memory record for the directory entry
3020c1c93860 MSF defs file found, now MSF can be made
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141
3020c1c93860 MSF defs file found, now MSF can be made
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142 * 1 byte reserved for memory management use
3020c1c93860 MSF defs file found, now MSF can be made
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143 dir.stat equ 1 status (0=needs update)
3020c1c93860 MSF defs file found, now MSF can be made
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144 dir.chg equ 2 NE - directory entry needs update
3020c1c93860 MSF defs file found, now MSF can be made
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145 dir.last equ 3 address of last MSDOS path descriptor for this file
3020c1c93860 MSF defs file found, now MSF can be made
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146 dir.loc equ 5 logical location of directory entry on disk
3020c1c93860 MSF defs file found, now MSF can be made
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147 dir.pos equ 7 offset from beginning of sector to directory entry
3020c1c93860 MSF defs file found, now MSF can be made
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148 dir.drv equ 9 drive number
3020c1c93860 MSF defs file found, now MSF can be made
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149 dir.esec equ 10 first directory sector with unused entry
3020c1c93860 MSF defs file found, now MSF can be made
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150 dir.eoff equ 12 offset to first unused entry in above sector
3020c1c93860 MSF defs file found, now MSF can be made
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151 dir.prnt equ 14 first cluster of parent directory
3020c1c93860 MSF defs file found, now MSF can be made
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152 dir.msd equ 16 directory entry
3020c1c93860 MSF defs file found, now MSF can be made
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153
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154 ********************************************************
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155 * type byte bit for MSDOS disk type
3020c1c93860 MSF defs file found, now MSF can be made
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156
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157 MSDOS. set %00001000 bit in PD.TYP to indicate MSDOS format
3020c1c93860 MSF defs file found, now MSF can be made
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158
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159 ********************************************************
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160 * revision 2.2 offsets in the boot sector of an MSDOS disk
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161
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162 ID.ver equ 0 E9xxxx DOS 2, EBxx90 DOS 3
3020c1c93860 MSF defs file found, now MSF can be made
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163 ID.OEM equ 3 8 byte OEM name
3020c1c93860 MSF defs file found, now MSF can be made
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164 * these are the important ones
3020c1c93860 MSF defs file found, now MSF can be made
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165 ID.skip equ 11 number of bytes to skip
3020c1c93860 MSF defs file found, now MSF can be made
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166
3020c1c93860 MSF defs file found, now MSF can be made
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167 ID.BPS equ 1 11 word, bytes/sector
3020c1c93860 MSF defs file found, now MSF can be made
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168 ID.SPA equ 3 13 byte, sectors/cluster
3020c1c93860 MSF defs file found, now MSF can be made
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169 ID.res equ 4 14 word, reserved sectors
3020c1c93860 MSF defs file found, now MSF can be made
boisy
parents:
diff changeset
170 ID.FATs equ 6 16 byte, number of FATs
3020c1c93860 MSF defs file found, now MSF can be made
boisy
parents:
diff changeset
171 ID.RDE equ 7 17 word, root directory entries
3020c1c93860 MSF defs file found, now MSF can be made
boisy
parents:
diff changeset
172 ID.secs equ 9 19 word, total number of sectors
3020c1c93860 MSF defs file found, now MSF can be made
boisy
parents:
diff changeset
173 ID.ID equ 11 21 byte, media ID byte
3020c1c93860 MSF defs file found, now MSF can be made
boisy
parents:
diff changeset
174 ID.spf equ 12 22 word, sectors/FAT
3020c1c93860 MSF defs file found, now MSF can be made
boisy
parents:
diff changeset
175 ID.spt equ 14 24 word, sectors/track
3020c1c93860 MSF defs file found, now MSF can be made
boisy
parents:
diff changeset
176 ID.hds equ 16 26 word, number of heads/sides
3020c1c93860 MSF defs file found, now MSF can be made
boisy
parents:
diff changeset
177 ID.hidn equ 18 28 word, number of hidden sectors
3020c1c93860 MSF defs file found, now MSF can be made
boisy
parents:
diff changeset
178
3020c1c93860 MSF defs file found, now MSF can be made
boisy
parents:
diff changeset
179 IDsize equ 19 number of bytes of disk info
3020c1c93860 MSF defs file found, now MSF can be made
boisy
parents:
diff changeset
180
3020c1c93860 MSF defs file found, now MSF can be made
boisy
parents:
diff changeset
181 ID.clus equ 20 number of usable clusters