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comparison io.c @ 44:b26c23331d02

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add more function on vdisk
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Thu, 19 Jul 2018 11:31:17 +0900
parents 01519215ec70
children 07c84761da6f
comparison
equal deleted inserted replaced
43:7a83a6a1685a 44:b26c23331d02
69 * IOPAGE + 0x30 Timer control 0x8f start timer/0x80 stop timer/0x04 update date 69 * IOPAGE + 0x30 Timer control 0x8f start timer/0x80 stop timer/0x04 update date
70 * read 0x10 bit menas timer 70 * read 0x10 bit menas timer
71 * IOPAGE + 0x31- YY/MM/DD/HH/MM/SS 71 * IOPAGE + 0x31- YY/MM/DD/HH/MM/SS
72 * 72 *
73 * IOPAGE + 0x40 Disk control 0x81 read/0x55 write 0 ... ok / 0xff .. error 73 * IOPAGE + 0x40 Disk control 0x81 read/0x55 write 0 ... ok / 0xff .. error
74 * IOPAGE + 0x41 drive no 74 * IOPAGE + 0x41 drive no / ( VDISK 0 for system, 1 for user )
75 * IOPAGE + 0x42 LSN2 75 * IOPAGE + 0x42 LSN2
76 * IOPAGE + 0x43 LSN1 76 * IOPAGE + 0x43 LSN1
77 * IOPAGE + 0x44 LSN0 77 * IOPAGE + 0x44 LSN0
78 * IOPAGE + 0x45 ADR2 78 * IOPAGE + 0x45 ADR2
79 * IOPAGE + 0x46 ADR1 79 * IOPAGE + 0x46 ADR1
104 FILE *disk[] = {0,0}; 104 FILE *disk[] = {0,0};
105 105
106 #ifdef USE_MMU 106 #ifdef USE_MMU
107 extern char *prog ; // for disass 107 extern char *prog ; // for disass
108 extern Byte * mem0(Byte *iphymem, Word adr, Byte *immu) ; 108 extern Byte * mem0(Byte *iphymem, Word adr, Byte *immu) ;
109 #define pmem(a) mem0(phymem,a,mmu)
110 #else
111 #define pmem(a) (&mem[a])
109 #endif 112 #endif
113
110 114
111 extern int bpskip ; 115 extern int bpskip ;
112 extern int stkskip ; 116 extern int stkskip ;
113 extern FILE *logfile; 117 extern FILE *logfile;
114 118
305 } else { 309 } else {
306 mem[(IOPAGE&0xfe00)+a]=c; 310 mem[(IOPAGE&0xfe00)+a]=c;
307 } 311 }
308 } 312 }
309 313
314
310 void do_disk(int a, int c) { 315 void do_disk(int a, int c) {
311 if (a!=0x40+(IOPAGE&0x1ff)) { 316 if (a!=0x40+(IOPAGE&0x1ff)) {
312 mem[(IOPAGE&0xfe00)+a]=c; 317 mem[(IOPAGE&0xfe00)+a]=c;
313 return; 318 return;
314 } 319 }
315 int drv = mem[IOPAGE+0x41]; 320 int drv = mem[IOPAGE+0x41];
316 int lsn = (mem[IOPAGE+0x42]<<16) + (mem[IOPAGE+0x43]<<8) + mem[IOPAGE+0x44]; 321 int lsn = (mem[IOPAGE+0x42]<<16) + (mem[IOPAGE+0x43]<<8) + mem[IOPAGE+0x44];
317 int buf = (mem[IOPAGE+0x45]<<8) + mem[IOPAGE+0x46]; 322 int buf = (mem[IOPAGE+0x45]<<8) + mem[IOPAGE+0x46];
318 if (drv > 1 || disk[drv]==0) goto error; 323 if (drv > 1 || disk[drv]==0) goto error;
319 #ifdef USE_MMU 324 Byte *phy = pmem(buf);
320 Byte *phy = mem0(phymem,buf,mmu);
321 #else
322 Byte *phy = &mem[buf];
323 #endif
324 if (c==0x81) { 325 if (c==0x81) {
325 if (lseek(fileno(disk[drv]),lsn*SECSIZE,SEEK_SET)==-1) goto error; 326 if (lseek(fileno(disk[drv]),lsn*SECSIZE,SEEK_SET)==-1) goto error;
326 if (read(fileno(disk[drv]),phy,SECSIZE)==-1) goto error; 327 if (read(fileno(disk[drv]),phy,SECSIZE)==-1) goto error;
327 } else if (c==0x55) { 328 } else if (c==0x55) {
328 if (lseek(fileno(disk[drv]),lsn*SECSIZE,SEEK_SET)==-1) goto error; 329 if (lseek(fileno(disk[drv]),lsn*SECSIZE,SEEK_SET)==-1) goto error;
329 if (write(fileno(disk[drv]),phy,SECSIZE)==-1) goto error; 330 if (write(fileno(disk[drv]),phy,SECSIZE)==-1) goto error;
331 #ifdef VDISK
332 } else {
333 do_vdisk(c);
334 #endif
330 } 335 }
331 mem[IOPAGE+0x40] = 0; 336 mem[IOPAGE+0x40] = 0;
332 return; 337 return;
333 error : 338 error :
334 mem[IOPAGE+0x40] = 0xff; 339 mem[IOPAGE+0x40] = 0xff;