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dos33fsprogs
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prodos: volume free bitmap printing

This commit is contained in:
Vince Weaver 2021-07-28 17:20:00 -04:00
parent 47336d1189
commit b8e0cf5b29
1 changed files with 45 additions and 38 deletions
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83
utils/prodos-utils/prodos_volume_bitmap.c
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@ -45,25 +45,20 @@ int prodos_voldir_free_space(struct voldir_t *voldir) {
int volblocks;
unsigned char temp_block[PRODOS_BYTES_PER_BLOCK];
unsigned char bitmap[4];
int i,sectors_free=0;
int i,j,blocks_free=0;
volblocks=1+voldir->total_blocks/(PRODOS_BYTES_PER_BLOCK*8);
prodos_read_block(voldir,temp_block,voldir->bit_map_pointer);
for(j=0;j<volblocks;j++) {
prodos_read_block(voldir,temp_block,j+voldir->bit_map_pointer);
#if 0
for(i=0;i<TRACKS_PER_DISK;i++) {
bitmap[0]=vtoc[VTOC_FREE_BITMAPS+(i*4)];
bitmap[1]=vtoc[VTOC_FREE_BITMAPS+(i*4)+1];
sectors_free+=ones_lookup[bitmap[0]&0xf];
sectors_free+=ones_lookup[(bitmap[0]>>4)&0xf];
sectors_free+=ones_lookup[bitmap[1]&0xf];
sectors_free+=ones_lookup[(bitmap[1]>>4)&0xf];
for(i=0;i<PRODOS_BYTES_PER_BLOCK;i++) {
blocks_free+=ones_lookup[temp_block[i]&0xf];
blocks_free+=ones_lookup[(temp_block[i]>>4)&0xf];
}
}
#endif
return sectors_free*PRODOS_BYTES_PER_BLOCK;
return blocks_free*PRODOS_BYTES_PER_BLOCK;
}
/* free a sector from the sector bitmap */
@ -117,34 +112,45 @@ void prodos_voldir_reserve_sector(struct voldir_t *voldir, int track, int sector
void prodos_voldir_dump_bitmap(struct voldir_t *voldir) {
int i,j;
int volblocks;
unsigned char temp_block[PRODOS_BYTES_PER_BLOCK];
int i,j,k;
printf("\nFree sector bitmap:\n");
printf("\tU=used, .=free\n");
printf("\tTrack FEDCBA98 76543210\n");
#if 0
for(i=0;i<num_tracks;i++) {
printf("\t $%02X: ",i);
for(j=0;j<8;j++) {
if ((vtoc[VTOC_FREE_BITMAPS+(i*4)]<<j)&0x80) {
printf(".");
volblocks=1+voldir->total_blocks/(PRODOS_BYTES_PER_BLOCK*8);
for(k=0;k<volblocks;k++) {
printf("\nFree block bitmap Block %d (block %d/%d):\n",
k+voldir->bit_map_pointer,k+1,volblocks);
printf("\tU=used, .=free\n");
printf("\tBlock 01234567 89ABCDEF\n");
prodos_read_block(voldir,temp_block,k+voldir->bit_map_pointer);
for(i=0;i<(512/16);i++) {
printf("\t $%03X: %02X %02X : ",i,
temp_block[(i*2)],
temp_block[(1+i*2)]);
for(j=0;j<8;j++) {
if ((temp_block[i*2]>>(7-j))&0x1) {
printf(".");
}
else {
printf("U");
}
}
else {
printf("U");
printf(" ");
for(j=0;j<8;j++) {
if ((temp_block[(1+i*2)]>>(7-j))&0x1) {
printf(".");
}
else {
printf("U");
}
}
printf("\n");
}
printf(" ");
for(j=0;j<8;j++) {
if ((vtoc[VTOC_FREE_BITMAPS+(i*4)+1]<<j)&0x80) {
printf(".");
}
else {
printf("U");
}
}
printf("\n");
}
#endif
}
@ -152,10 +158,11 @@ void prodos_voldir_dump_bitmap(struct voldir_t *voldir) {
int prodos_voldir_find_free_sector(struct voldir_t *voldir,
int *found_track, int *found_sector) {
#if 0
int start_track,track_dir,i;
int bitmap;
int found=0;
#if 0
/* Originally used to keep things near center of disk for speed */
/* We can use to avoid fragmentation possibly */
start_track=vtoc[VTOC_LAST_ALLOC_T]%TRACKS_PER_DISK;