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comparison defs/rbfdefs @ 0:6641a883d6b0

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Initial revision
author boisy
date Thu, 04 Apr 2002 16:34:12 +0000
parents
children c762f45df5c2
comparison
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-1:000000000000 0:6641a883d6b0
1 nam RBFDefs
2 ttl Random Block File Manager Definitions
3
4 **********************
5 * Modification History
6 *
7 * Date Changes Made by
8 * -------- ------------------------------------------------------------ ---
9 * 82/07/13 PD.Exten added to path descriptor rfd
10 * 82/07/13 PE entries defined rfd
11 * 82/07/15 V.FileHd inserted in drive static rfd
12 * 82/09/10 Level One/ Level two cond added WGP
13 * 82/09/17 Record Lock cond added WGP
14 * 82/09/17 PD.SLE renamed to PD.Creat rfd
15 * 82/09/17 V.DiskID, V.BMapSz, V.MapSct added for
16 * smart multi-sector bitmap searching rfd
17 * 82/09/20 reserved areas added in static storage.
18 * 83/06/07 Added InDriver flag in PD.SMF. rfd
19 * 83/06/13 Added PE.Req tmp save for PE.Lock rfd
20 * 83/08/08 reserved PD.SToff for Japanese rfd
21 * 83/11/19 Added V.ResBit in drive tables. rfd
22 * 83/12/12 Added PE.Prior to save process priority. rfd
23 * 83/12/13 Added BufBusy bit in state flag (PD.SMF) rfd
24 * 84/07/06 Added Bit Definitions for DD.FMT MGH
25 * 87/06/23 Updated with Dev Desc Info KKD
26
27 *******************************
28 * RBF Device Descriptor Offsets
29 *
30 org M$DTyp
31 rmb 1 Device type (IT.DTP) (1=RBF)
32 IT.DRV rmb 1 Drive number
33 IT.STP rmb 1 Step rate
34 IT.TYP rmb 1 Disk device type (5" 8" other)
35 IT.DNS rmb 1 Density capability
36 IT.CYL rmb 2 Number of cylinders
37 IT.SID rmb 1 Number of surfaces
38 IT.VFY rmb 1 0=verify disk writes
39 IT.SCT rmb 2 Default sectors/track
40 IT.T0S rmb 2 Default sectors/track tr00,s0
41 IT.ILV rmb 1 Sector interleave offset
42 IT.SAS rmb 1 Segment allocation size
43
44 *************************************
45 * IT.TYP/IT.DNS/IT.STP definitions
46 *
47 TYP.5 equ %00000000 5" media
48 TYP.8 equ %00000001 8" media
49 TYP.CCF equ %00100000 CoCo format
50 TYP.NCCF equ %00000000 Non-CoCo format
51 TYP.SOF equ %00000000 Standard OS-9 format
52 TYP.NSF equ %01000000 Non-standard format
53 TYP.FLP equ %00000000 Floppy disk
54 TYP.HARD equ %10000000 Hard disk
55
56 DNS.FM equ %00000000 Single-density (FM)
57 DNS.MFM equ %00000001 Double-density (MFM)
58 DNS.STD equ %00000000 Single track density (48 tpi)
59 DNS.DTD equ %00000010 Single track density (96 tpi)
60
61 STP.30ms equ 0 30ms step rate
62 STP.20ms equ 1 20ms step rate
63 STP.12ms equ 2 12ms step rate
64 STP.6ms equ 3 6ms step rate
65
66 *************************************
67 * Random Block Path Descriptor Format
68 *
69 org PD.FST
70 PD.SMF rmb 1 State flags
71 PD.CP rmb 4 Current logical byte position
72 PD.SIZ rmb 4 File size
73 PD.SBL rmb 3 Segment beginning lsn
74 PD.SBP rmb 3 Segment beginning psn
75 PD.SSZ rmb 3 Segment size
76 PD.DSK rmb 2 Disk id
77 PD.DTB rmb 2 Drive table ptr
78 org PD.OPT
79 rmb 1 Device type
80 PD.DRV rmb 1 Drive number
81 PD.STP rmb 1 Step rate
82 PD.TYP rmb 1 Disk device type (5" 8" other)
83 PD.DNS rmb 1 Density capability
84 PD.CYL rmb 2 Number of cylinders
85 PD.SID rmb 1 Number of surfaces
86 PD.VFY rmb 1 0=verify disk writes
87 PD.SCT rmb 2 Default sectors/track
88 PD.T0S rmb 2 Default sectors/track tr00,s0
89 PD.ILV rmb 1 Sector interleave offset
90 PD.SAS rmb 1 Segment allocation size
91 PD.TFM rmb 1 DMA Transfer Mode
92 PD.Exten rmb 2 Path Extension (PE) for record locking
93 PD.SToff rmb 1 Sector/Track offsets (for "foreign" disk formats)
94 PD.ATT rmb 1 File attributes
95 PD.FD rmb 3 File descriptor psn
96 PD.DFD rmb 3 Directory file descriptor psn
97 PD.DCP rmb 4 File directory entry ptr
98 PD.DVT rmb 2 User readable dev tbl ptr
99
100 * State Flags
101 BUFMOD equ $01 Buffer modified
102 SINBUF equ $02 Sector in buffer
103 FDBUF equ $04 File descriptor in buffer
104 *EOFSEC equ $08 End of file sector
105 *EOF equ $10 End of file
106 InDriver equ $20 Currently in Disk Driver, or queued
107 BufBusy equ $40 Buffer is currently busy
108
109 ifne Level-1
110 ************************************
111 * Random Block Path Extension Format
112 *
113 org 0
114 PE.PE rmb 1 PE path number
115 PE.PDptr rmb 2 back ptr to this PE's Path Descriptor
116 PE.NxFil rmb 2 Drive Open-File list ptr
117 PE.Confl rmb 2 circular File Conflict list
118 PE.Lock rmb 1 Path lockout status
119 PE.LoLck rmb 4 Low Locked Logical addr
120 PE.HiLck rmb 4 High Locked Logical addr
121 PE.Wait rmb 2 PE ptr to (next) locked-out PE
122 PE.TmOut rmb 2 Max ticks to wait for locked segment
123 PE.Owner rmb 1 Process ID of owner of locked segment
124 PE.Req rmb 1 temp for PE.Lock in GAIN when LockSeg fails
125 PE.Prior rmb 1 tmp for process priority while in driver
126 rmb 32-. reserved
127 PE.FilNm rmb 32 temp for filename during directory search
128
129 * PE.Lock status codes
130 Unlocked equ 0 no portion of file is locked
131 RcdLock equ 1 record from LoLck to HiLck locked
132 FileLock equ 2 entire file locked
133 EofLock equ 4 End of file is locked
134 endc
135
136 ***********************
137 * LSN0 Disk Data Format
138 *
139 org 0
140 DD.TOT rmb 3 Total number of sectors
141 DD.TKS rmb 1 Track size in sectors
142 DD.MAP rmb 2 Number of bytes in allocation bit map
143 DD.BIT rmb 2 Number of sectors/bit
144 DD.DIR rmb 3 Address of root directory fd
145 DD.OWN rmb 2 Owner
146 DD.ATT rmb 1 Attributes
147 DD.DSK rmb 2 Disk id
148 DD.FMT rmb 1 Disk format; density/sides
149 DD.SPT rmb 2 Sectors/track
150 DD.RES rmb 2 Reserved for future use
151 DD.SIZ equ . Device descriptor minimum size
152 DD.BT rmb 3 System bootstrap sector
153 DD.BSZ rmb 2 Size of system bootstrap
154 DD.DAT rmb 5 Creation date
155 DD.NAM rmb 32 Volume name
156 DD.OPT rmb 32 option area
157
158 * DD.FMT Bit Definitions
159 FMT.SIDE equ %00000001 Single Side=0, Double Side=1
160 FMT.DNS equ %00000010 Single DNS=0, Double DNS=1
161 FMT.TDNS equ %00000100 48tpi=0, 96tpi=1
162 FMT.T0DN equ %00100000 Track 0 DNS, see FMT.DNS
163
164 ************************
165 * File Descriptor Format
166 *
167 org 0
168 FD.ATT rmb 1 Attributes
169 FD.OWN rmb 2 Owner
170 FD.DAT rmb 5 Date last modified
171 FD.LNK rmb 1 Link count
172 FD.SIZ rmb 4 File size
173 FD.Creat rmb 3 Segment list extension
174 FD.SEG equ . Beginning of segment list
175 * Segment List Entry Format
176 org 0
177 FDSL.A rmb 3 Segment beginning physical sector number
178 FDSL.B rmb 2 Segment size
179 FDSL.S equ . Segment list entry size
180 FD.LS1 equ FD.SEG+((256-FD.SEG)/FDSL.S-1)*FDSL.S
181 FD.LS2 equ (256/FDSL.S-1)*FDSL.S
182 MINSEC set 16
183
184 ************************
185 * Directory Entry Format
186 *
187 org 0
188 DIR.NM rmb 29 File name
189 DIR.FD rmb 3 File descriptor physical sector number
190 DIR.SZ equ . Directory record size
191
192 ****************
193 * Static Storage
194 *
195 * Overall Disk Static Storage
196 *
197 * Note: This does not reserve any memory for drive tables. Each Driver is
198 * responsible for reserving sufficient memory for the appropriate
199 * number of tables.
200 *
201 org V.USER Reserve required ($06)
202 V.NDRV rmb 1 Number of drives ($07)
203 rmb 8 reserved ($08)
204 DRVBEG equ . Beginning of drive tables ($10)
205 *
206 * Global Storage For Disk Drive Tables
207 * Each Table Contains The First 'DD.Siz' Bytes
208 * From Sector 0, And The Current Track, Stepping Rate,
209 * Bit-Map Use Flag, And Disk Type
210 *
211 org 0
212 rmb DD.SIZ Device descriptor, sector 0
213 V.TRAK rmb 2 Current track
214 V.BMB rmb 1 Bit-map use flag
215 V.FileHd rmb 2 open file list for this drive
216 V.DiskID rmb 2 Disk ID
217 V.BMapSz rmb 1 Bitmap Size
218 V.MapSct rmb 1 lowest reasonable bitmap sector
219 V.ResBit rmb 1 reserved bitmap sector (for compaction)
220 V.ScTkOf rmb 1 Sector/Track byte (Combined from descriptor)
221 V.ScOfst rmb 1 Sector offset split from byte above
222 V.TkOfst rmb 1 Track offset split from byte above
223 rmb 4 reserved
224 DRVMEM equ .
225