source: buchla-68k/include/biosdefs.h@ 0170798

Last change on this file since 0170798 was 5fa506d, checked in by Thomas Lopatic <thomas@…>, 7 years ago

Include file cleanup.
  • Property mode set to 100644
File size: 5.5 KB
RevLine 
[f40a309]1/*
2 ============================================================================
3 biosdefs.h -- Buchla 700 BIOS and XBIOS definitions
4 Version 22 -- 1988-04-11 -- D.N. Lynx Crowe
5 ============================================================================
6*/
7
[f7428b1]8#pragma once
[5fa506d]9
[f7428b1]10#include "stdint.h"
[f40a309]11
12#define BIOS trap13
13#define XBIOS trap14
14
15/* BIOS functions */
16
17/* function 0 unused (getmpb) */
18
19#define B_RDAV 1
20#define B_GETC 2
21#define B_PUTC 3
22#define B_RDWR 4
23#define B_SETV 5
24
25/* function 6 unused (tickcal) */
26
27#define B_GBPB 7
28#define B_THRE 8
29#define B_MCHG 9
30#define B_DMAP 10
31
32/* function 11 unused (shift) */
33
34/* XBIOS functions */
35
36#define X_PIOREC 0
37#define X_SETPRT 1
38#define X_FLOPRD 2
39#define X_FLOPWR 3
40#define X_FORMAT 4
41#define X_VERIFY 5
42#define X_PRBOOT 6
43#define X_RANDOM 7
44#define X_ANALOG 8
45#define X_CLRAFI 9
46#define X_APICHK 10
47#define X_MTDEFS 11
48
49/* device unit numbers */
50
51#define PRT_DEV 0
52#define AUX_DEV 1
53#define CON_DEV 2
54#define MC1_DEV 3
55#define MC2_DEV 4
56
57/*
58 */
59/*
60 ============================================================================
61 bpb -- BIOS parameter block
62 ============================================================================
63*/
64
65
66struct bpb { /* BIOS parameter block returned by B_GBPB */
[7258c6a]67
68 uint16_t recsiz; /* physical sector size in bytes */
69 uint16_t clsiz; /* cluster size in sectors */
70 uint16_t clsizb; /* cluster size in bytes */
71 uint16_t rdlen; /* root directory length in sectors */
72 uint16_t fsiz; /* FAT size in sectors */
73 uint16_t fatrec; /* sector number of 1st sector of 2nd FAT */
74 uint16_t datrec; /* sector number of 1st data sector */
75 uint16_t numcl; /* number of data clusters on disk */
76 uint16_t bflags; /* flags */
77 uint16_t ntracks; /* number of tracks */
78 uint16_t nsides; /* number of sides (heads) */
79 uint16_t dspc; /* sectors per cylinder */
80 uint16_t dspt; /* sectors per track */
81 uint16_t hidden; /* number of hidden files */
82 int8_t serno[3]; /* disk serial number */
[f40a309]83 int8_t nada; /* --- filler - nothing here --- */
84};
85
86#define BPBSIZE 32 /* length of a BPB */
87
88#define B_FAT16 0x0001 /* flag for using 16 bit FAT entries */
89
90/*
91
92*/
93
94/*
95 ============================================================================
96 dirent -- Directory entry
97 ============================================================================
98*/
99
[7258c6a]100struct dirent { /* Directory entry */
101
102 int8_t fname[8]; /* file name */
103 int8_t fext[3]; /* file extension */
104 int8_t atrib; /* attribute byte */
105 int8_t unused[10]; /* unused space */
106 uint16_t crtime; /* 'LLHH' creation time */
107 uint16_t crdate; /* 'LLHH' creation date */
[f40a309]108 uint16_t bclust; /* 'LLHH' starting cluster number */
109 int32_t flen; /* 'LLHH' file length */
110};
111
112#define DENTSIZE (sizeof (struct dirent))
113
114#define F_RDONLY 0x01 /* Read only file */
115#define F_HIDDEN 0x02 /* Hidden file */
116#define F_SYSTEM 0x04 /* System file */
117#define F_VOLUME 0x08 /* Volume label */
118#define F_SUBDIR 0x10 /* Sub-directory */
119#define F_ARCHIV 0x20 /* Archived */
120
121/*
122
123*/
124
125/*
126 ============================================================================
127 fcb -- File Control Block
128 ============================================================================
129*/
130
[7258c6a]131struct fcb { /* file control block */
132
133 struct dirent de; /* directory entry image for file */
134 uint16_t modefl; /* fcb flags */
135 uint16_t clsec; /* current sector in cluster */
136 uint16_t curcls; /* current cluster */
137 uint16_t offset; /* current offset into sector */
138 int32_t curlsn; /* current logical sector number in file */
[f40a309]139 int32_t curdsn; /* current logical sector number on disk */
140 int32_t curlen; /* current file length in bytes */
141 int32_t asects; /* allocated file length in sectors */
142};
143
144#define FC_EOF 0x8000 /* end of file */
145#define FC_BAD 0x4000 /* bad FAT entry encountered */
146#define FC_ERR 0x2000 /* error encountered */
147#define FC_OPN 0x1000 /* file open */
148
149#define FC_CR 0x0800 /* create mode */
150#define FC_AP 0x0400 /* append mode */
151#define FC_WR 0x0200 /* write mode */
152#define FC_RD 0x0100 /* read mode */
153
154#define FC_EX 0x0080 /* exclusive mode */
155#define FC_TR 0x0040 /* truncate mode */
156#define FC_NB 0x0020 /* non-blocking mode */
157#define FC_BF 0x0010 /* binary file mode */
158
159#define FC_RW (FC_RD | FC_WR) /* read-write mode */
160
161/*
162 */
163
164/*
165 ============================================================================
166 BIOS and XBIOS function call formats
167 ------------------------------------
168
169 In the list below, .W and .L refer to the size of the parameter
170 passed to the BIOS/XBIOS routine.
171
172 The first parameter is always the function code, "code.W".
173
174 BIOS calls are:
175 ---------------
176
177 BIOS(B_RDAV, unit.W);
178 BIOS(B_GETC, unit.W);
179 BIOS(B_PUTC, unit.W, c.W);
180 BIOS(B_RDWR, rwflag.W, buf.L, count.W, recno.W, dev.W);
181 BIOS(B_SETV, vecnum.W, vecadr.L);
182 BIOS(B_GBPB, dev.W);
183 BIOS(B_THRE, unit.W);
184 BIOS(B_MCHG, unit.W);
185 BIOS(B_DMAP);
186
187 XBIOS calls are:
188 ----------------
189
190 XBIOS(X_PIOREC, unit.W)
191 XBIOS(X_SETPRT, unit.W, mode.W, baud.W, cfr0.W, cr1.W)
192 XBIOS(X_FLOPRD, buf.L, filler.L, dev.W, sector.W, track.W,
193 side.W, count.W)
194 XBIOS(X_FLOPWR, buf.L, filler.L, dev.W, sector.W, track.W,
195 side.W, count.W)
196 XBIOS(X_FORMAT, buf.L, filler.L, dev.W, spt.W, track.W, side.W,
197 intrlv.W, magic.L, virgin.W)
198 XBIOS(X_VERIFY, buf.L, filler.L, dev.W, sector.W, track.W,
199 side.W, count.W)
200 XBIOS(X_PRBOOT, buf.L, serial.L, type.W, execflag.W)
201 XBIOS(X_RANDOM)
202 XBIOS(X_ANALOG)
203 XBIOS(X_CLRAFI)
204 ============================================================================
205*/
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