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Fixes #82 Support nib files

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This commit is contained in:
Stefan Arentz 2017-01-09 21:39:55 -05:00
parent 70aef81778
commit 9df5355e31
2 changed files with 47 additions and 13 deletions
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38
src/dsk.c
View File

@ -429,9 +429,23 @@ struct ewm_dsk_t *ewm_dsk_create(struct cpu_t *cpu) {
}
int ewm_dsk_set_disk_data(struct ewm_dsk_t *dsk, uint8_t index, bool readonly, void *data, size_t length, int type) {
assert(type == EWM_DSK_TYPE_DO || type == EWM_DSK_TYPE_PO);
assert(index < 2);
assert(length == (EWM_DSK_TRACKS * EWM_DSK_SECTORS * EWM_DSK_SECTOR_SIZE));
if (type == EWM_DSK_TYPE_UNKNOWN) {
return -1;
}
if (index > 1) {
return -1;
}
if (type == EWM_DSK_TYPE_DO || type == EWM_DSK_TYPE_PO) {
if (length != (EWM_DSK_TRACKS * EWM_DSK_SECTORS * 256)) {
return -1;
}
} else if (type == EWM_DSK_TYPE_NIB) {
if (length != (EWM_DSK_TRACKS * EWM_DSK_NIBBLES_PER_TRACK)) {
return -1;
}
}
struct ewm_dsk_drive_t *drive = &dsk->drives[index];
@ -451,9 +465,17 @@ int ewm_dsk_set_disk_data(struct ewm_dsk_t *dsk, uint8_t index, bool readonly, v
drive->readonly = readonly;
drive->dirty = false;
if (type == EWM_DSK_TYPE_DO || type == EWM_DSK_TYPE_PO) {
for (int t = 0; t < EWM_DSK_TRACKS; t++) {
drive->tracks[t] = dsk_convert_track(dsk, drive, data, t, type);
}
} else if (type == EWM_DSK_TYPE_NIB) {
for (int t = 0; t < EWM_DSK_TRACKS; t++) {
drive->tracks[t].length = 6656;
drive->tracks[t].data = malloc(6656);
memcpy(drive->tracks[t].data, data + (t * 6656), 6656);
}
}
return 0;
}
@ -465,6 +487,9 @@ static int ewm_dsk_type_from_path(char *path) {
if (ewm_utl_endswith(path, ".po")) {
return EWM_DSK_TYPE_PO;
}
if (ewm_utl_endswith(path, ".nib")) {
return EWM_DSK_TYPE_NIB;
}
return EWM_DSK_TYPE_UNKNOWN;
}
@ -485,10 +510,17 @@ int ewm_dsk_set_disk_file(struct ewm_dsk_t *dsk, uint8_t drive, bool readonly, c
return -1;
}
if (type == EWM_DSK_TYPE_DO || type == EWM_DSK_TYPE_PO) {
if (file_info.st_size != (EWM_DSK_TRACKS * EWM_DSK_SECTORS * 256)) {
close(fd);
return -1;
}
} else if (type == EWM_DSK_TYPE_NIB) {
if (file_info.st_size != (EWM_DSK_TRACKS * EWM_DSK_NIBBLES_PER_TRACK)) {
close(fd);
return -1;
}
}
char *data = calloc(file_info.st_size, 1);
if (read(fd, data, file_info.st_size) != file_info.st_size) {

12
src/dsk.h
View File

@ -29,12 +29,13 @@
struct cpu_t;
struct mem_t;
#define EWM_DSK_DRIVE1 0
#define EWM_DSK_DRIVE2 1
#define EWM_DSK_DRIVE1 (0)
#define EWM_DSK_DRIVE2 (1)
#define EWM_DSK_TRACKS 35
#define EWM_DSK_SECTORS 16
#define EWM_DSK_SECTOR_SIZE 256
#define EWM_DSK_TRACKS (35)
#define EWM_DSK_SECTORS (16)
#define EWM_DSK_SECTOR_SIZE (256)
#define EWM_DSK_NIBBLES_PER_TRACK (6656)
struct ewm_dsk_track_t {
int length;
@ -65,6 +66,7 @@ struct ewm_dsk_t {
#define EWM_DSK_TYPE_UNKNOWN (-1)
#define EWM_DSK_TYPE_DO (0)
#define EWM_DSK_TYPE_PO (1)
#define EWM_DSK_TYPE_NIB (2)
struct ewm_dsk_t *ewm_dsk_create(struct cpu_t *cpu);
int ewm_dsk_set_disk_data(struct ewm_dsk_t *dsk, uint8_t index, bool readonly, void *data, size_t length, int type);