Mercurial > hg > Members > kono > os9 > sbc09
diff io.c @ 44:b26c23331d02
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 |
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--- a/io.c Tue Jul 17 17:08:09 2018 +0900 +++ b/io.c Thu Jul 19 11:31:17 2018 +0900 @@ -71,7 +71,7 @@ * IOPAGE + 0x31- YY/MM/DD/HH/MM/SS * * IOPAGE + 0x40 Disk control 0x81 read/0x55 write 0 ... ok / 0xff .. error - * IOPAGE + 0x41 drive no + * IOPAGE + 0x41 drive no / ( VDISK 0 for system, 1 for user ) * IOPAGE + 0x42 LSN2 * IOPAGE + 0x43 LSN1 * IOPAGE + 0x44 LSN0 @@ -106,8 +106,12 @@ #ifdef USE_MMU extern char *prog ; // for disass extern Byte * mem0(Byte *iphymem, Word adr, Byte *immu) ; +#define pmem(a) mem0(phymem,a,mmu) +#else +#define pmem(a) (&mem[a]) #endif + extern int bpskip ; extern int stkskip ; extern FILE *logfile; @@ -307,6 +311,7 @@ } } + void do_disk(int a, int c) { if (a!=0x40+(IOPAGE&0x1ff)) { mem[(IOPAGE&0xfe00)+a]=c; @@ -316,17 +321,17 @@ int lsn = (mem[IOPAGE+0x42]<<16) + (mem[IOPAGE+0x43]<<8) + mem[IOPAGE+0x44]; int buf = (mem[IOPAGE+0x45]<<8) + mem[IOPAGE+0x46]; if (drv > 1 || disk[drv]==0) goto error; -#ifdef USE_MMU - Byte *phy = mem0(phymem,buf,mmu); -#else - Byte *phy = &mem[buf]; -#endif + Byte *phy = pmem(buf); if (c==0x81) { if (lseek(fileno(disk[drv]),lsn*SECSIZE,SEEK_SET)==-1) goto error; if (read(fileno(disk[drv]),phy,SECSIZE)==-1) goto error; } else if (c==0x55) { if (lseek(fileno(disk[drv]),lsn*SECSIZE,SEEK_SET)==-1) goto error; if (write(fileno(disk[drv]),phy,SECSIZE)==-1) goto error; +#ifdef VDISK + } else { + do_vdisk(c); +#endif } mem[IOPAGE+0x40] = 0; return;