diff options
author | 2015-11-08 12:56:12 +0100 | |
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committer | 2015-11-08 12:56:12 +0100 | |
commit | 7c19aac60e12d6f5ea301bdb34d7826a01e0b06f (patch) | |
tree | f310d86aa2c6bfc19d115307dedde4eb0cd52dad /src/lib/formats/sorc_dsk.cpp | |
parent | a57b46ae933badd7441ce1644711dbb851e2b504 (diff) |
Rename *.c -> *.cpp in our source (nw)
Diffstat (limited to 'src/lib/formats/sorc_dsk.cpp')
-rw-r--r-- | src/lib/formats/sorc_dsk.cpp | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/src/lib/formats/sorc_dsk.cpp b/src/lib/formats/sorc_dsk.cpp new file mode 100644 index 00000000000..5e59d30cdb1 --- /dev/null +++ b/src/lib/formats/sorc_dsk.cpp @@ -0,0 +1,160 @@ +// license:BSD-3-Clause +// copyright-holders:Robbbert +/********************************************************************* + + formats/sorc_dsk.c + + Exidy Sorcerer floppy-disk images + +*********************************************************************/ + +#include <string.h> +#include <assert.h> + +#include "sorc_dsk.h" +#include "basicdsk.h" + +static FLOPPY_IDENTIFY(sorc_dsk_identify) +{ + *vote = (floppy_image_size(floppy) == 332640) ? 100 : 0; + return FLOPPY_ERROR_SUCCESS; +} + +static int sorc_get_heads_per_disk(floppy_image_legacy *floppy) +{ + return 1; +} + +static int sorc_get_tracks_per_disk(floppy_image_legacy *floppy) +{ + return 77; +} + +static UINT64 sorc_translate_offset(floppy_image_legacy *floppy, int track, int head, int sector) +{ + return 270*(16*track+sector); +} + +static floperr_t get_offset(floppy_image_legacy *floppy, int head, int track, int sector, int sector_is_index, UINT64 *offset) +{ + UINT64 offs; + /* translate the sector to a raw sector */ + if (!sector_is_index) + { + sector -= 1; + } + /* check to see if we are out of range */ + if ((head != 0) || (track < 0) || (track >= 77) || (sector < 0) || (sector >= 16)) + return FLOPPY_ERROR_SEEKERROR; + + offs = sorc_translate_offset(floppy, track, head, sector); + if (offset) + *offset = offs; + return FLOPPY_ERROR_SUCCESS; +} + + + +static floperr_t internal_sorc_read_sector(floppy_image_legacy *floppy, int head, int track, int sector, int sector_is_index, void *buffer, size_t buflen) +{ + UINT64 offset; + floperr_t err; + err = get_offset(floppy, head, track, sector, sector_is_index, &offset); + if (err) + return err; + + floppy_image_read(floppy, buffer, offset, buflen); + return FLOPPY_ERROR_SUCCESS; +} + + + +static floperr_t internal_sorc_write_sector(floppy_image_legacy *floppy, int head, int track, int sector, int sector_is_index, const void *buffer, size_t buflen, int ddam) +{ + UINT64 offset; + floperr_t err; + + err = get_offset(floppy, head, track, sector, sector_is_index, &offset); + if (err) + return err; + + floppy_image_write(floppy, buffer, offset, buflen); + return FLOPPY_ERROR_SUCCESS; +} + + + +static floperr_t sorc_read_sector(floppy_image_legacy *floppy, int head, int track, int sector, void *buffer, size_t buflen) +{ + return internal_sorc_read_sector(floppy, head, track, sector, FALSE, buffer, buflen); +} + +static floperr_t sorc_write_sector(floppy_image_legacy *floppy, int head, int track, int sector, const void *buffer, size_t buflen, int ddam) +{ + return internal_sorc_write_sector(floppy, head, track, sector, FALSE, buffer, buflen, ddam); +} + +static floperr_t sorc_read_indexed_sector(floppy_image_legacy *floppy, int head, int track, int sector, void *buffer, size_t buflen) +{ + return internal_sorc_read_sector(floppy, head, track, sector, TRUE, buffer, buflen); +} + +static floperr_t sorc_write_indexed_sector(floppy_image_legacy *floppy, int head, int track, int sector, const void *buffer, size_t buflen, int ddam) +{ + return internal_sorc_write_sector(floppy, head, track, sector, TRUE, buffer, buflen, ddam); +} + +static floperr_t sorc_get_sector_length(floppy_image_legacy *floppy, int head, int track, int sector, UINT32 *sector_length) +{ + floperr_t err; + err = get_offset(floppy, head, track, sector, FALSE, NULL); + if (err) + return err; + + if (sector_length) { + *sector_length = 270; + } + return FLOPPY_ERROR_SUCCESS; +} + + + +static floperr_t sorc_get_indexed_sector_info(floppy_image_legacy *floppy, int head, int track, int sector_index, int *cylinder, int *side, int *sector, UINT32 *sector_length, unsigned long *flags) +{ + sector_index += 1; + if (cylinder) + *cylinder = track; + if (side) + *side = head; + if (sector) + *sector = sector_index; + if (flags) + /* TODO: read DAM or DDAM and determine flags */ + *flags = 0; + return sorc_get_sector_length(floppy, head, track, sector_index, sector_length); +} + + +static FLOPPY_CONSTRUCT(sorc_dsk_construct) +{ + struct FloppyCallbacks *callbacks; + callbacks = floppy_callbacks(floppy); + callbacks->read_sector = sorc_read_sector; + callbacks->write_sector = sorc_write_sector; + callbacks->read_indexed_sector = sorc_read_indexed_sector; + callbacks->write_indexed_sector = sorc_write_indexed_sector; + callbacks->get_sector_length = sorc_get_sector_length; + callbacks->get_heads_per_disk = sorc_get_heads_per_disk; + callbacks->get_tracks_per_disk = sorc_get_tracks_per_disk; + callbacks->get_indexed_sector_info = sorc_get_indexed_sector_info; + + return FLOPPY_ERROR_SUCCESS; +} + + + +/* ----------------------------------------------------------------------- */ + +LEGACY_FLOPPY_OPTIONS_START( sorcerer ) + LEGACY_FLOPPY_OPTION( sorc_dsk, "dsk", "Exidy Sorcerer floppy disk image", sorc_dsk_identify, sorc_dsk_construct, NULL, NULL) +LEGACY_FLOPPY_OPTIONS_END |