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124 lines
2.5 KiB
Plaintext
124 lines
2.5 KiB
Plaintext
/*
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GSport - an Apple //gs Emulator
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Copyright (C) 2010 by GSport contributors
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Based on the KEGS emulator written by and Copyright (C) 2003 Kent Dickey
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#define MAX_TRACKS (2*80)
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#define MAX_C7_DISKS 32
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#define NIB_LEN_525 0x1900 /* 51072 bits per track */
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#define NIBS_FROM_ADDR_TO_DATA 20
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#define DSK_TYPE_PRODOS 0
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#define DSK_TYPE_DOS33 1
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#define DSK_TYPE_NIB 2
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typedef struct _Disk Disk;
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STRUCT(Trk) {
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Disk *dsk;
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byte *nib_area;
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int track_dirty;
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int overflow_size;
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int track_len;
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int unix_pos;
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int unix_len;
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};
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struct _Disk {
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double dcycs_last_read;
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char *name_ptr;
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char *partition_name;
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int partition_num;
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FILE *file;
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int force_size;
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int image_start;
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int image_size;
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int smartport;
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int disk_525;
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int drive;
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int cur_qtr_track;
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int image_type;
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int vol_num;
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int write_prot;
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int write_through_to_unix;
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int disk_dirty;
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int just_ejected;
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int last_phase;
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int nib_pos;
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int num_tracks;
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Trk *trks;
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};
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STRUCT(Iwm) {
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Disk drive525[2];
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Disk drive35[2];
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Disk smartport[MAX_C7_DISKS];
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int motor_on;
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int motor_off;
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int motor_off_vbl_count;
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int motor_on35;
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int head35;
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int step_direction35;
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int iwm_phase[4];
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int iwm_mode;
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int drive_select;
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int q6;
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int q7;
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int enable2;
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int reset;
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word32 previous_write_val;
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int previous_write_bits;
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};
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STRUCT(Driver_desc) {
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word16 sig;
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word16 blk_size;
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word32 blk_count;
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word16 dev_type;
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word16 dev_id;
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word32 data;
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word16 drvr_count;
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};
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STRUCT(Part_map) {
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word16 sig;
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word16 sigpad;
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word32 map_blk_cnt;
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word32 phys_part_start;
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word32 part_blk_cnt;
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char part_name[32];
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char part_type[32];
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word32 data_start;
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word32 data_cnt;
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word32 part_status;
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word32 log_boot_start;
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word32 boot_size;
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word32 boot_load;
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word32 boot_load2;
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word32 boot_entry;
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word32 boot_entry2;
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word32 boot_cksum;
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char processor[16];
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char junk[128];
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};
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