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1.1 root 1: /*
1.1.1.6 root 2: Hatari - main.h
3:
4: This file is distributed under the GNU Public License, version 2 or at
5: your option any later version. Read the file gpl.txt for details.
1.1 root 6: */
7:
1.1.1.6 root 8: #ifndef HATARI_MAIN_H
9: #define HATARI_MAIN_H
1.1 root 10:
11: typedef int BOOL;
12:
1.1.1.10! root 13: #define PROG_NAME "Hatari v0.70" /* Name, version for window title */
! 14: #define PROG_VERSION "v0.70"
1.1 root 15:
16:
17: #include <stdio.h>
18: #include <stdlib.h>
19: #include <string.h>
20: #include <math.h>
21: #include <time.h>
22:
1.1.1.8 root 23: #include <SDL_types.h>
24:
25:
1.1 root 26: #ifndef FALSE
27: #define FALSE 0
28: #define TRUE (!0)
29: #endif
30:
31: #define CALL_VAR(func) { ((void(*)(void))func)(); }
32:
33:
1.1.1.4 root 34: /* 68000 operand sizes */
1.1 root 35: #define SIZE_BYTE 1
36: #define SIZE_WORD 2
37: #define SIZE_LONG 4
38:
39: /* 68000 Register defines */
40: enum {
41: REG_D0, /* D0.. */
42: REG_D1,
43: REG_D2,
44: REG_D3,
45: REG_D4,
46: REG_D5,
47: REG_D6,
48: REG_D7, /* ..D7 */
49: REG_A0, /* A0.. */
50: REG_A1,
51: REG_A2,
52: REG_A3,
53: REG_A4,
54: REG_A5,
55: REG_A6,
1.1.1.8 root 56: REG_A7, /* ..A7 (also SP) */
1.1 root 57: };
58:
59: /* 68000 Condition code's */
1.1.1.10! root 60: #define SR_AUX 0x0010
! 61: #define SR_NEG 0x0008
! 62: #define SR_ZERO 0x0004
! 63: #define SR_OVERFLOW 0x0002
! 64: #define SR_CARRY 0x0001
! 65:
! 66: #define SR_CLEAR_AUX 0xffef
! 67: #define SR_CLEAR_NEG 0xfff7
! 68: #define SR_CLEAR_ZERO 0xfffb
! 69: #define SR_CLEAR_OVERFLOW 0xfffd
! 70: #define SR_CLEAR_CARRY 0xfffe
! 71:
! 72: #define SR_CCODE_MASK (SR_AUX|SR_NEG|SR_ZERO|SR_OVERFLOW|SR_CARRY)
! 73: #define SR_MASK 0xFFE0
! 74:
! 75: #define SR_TRACEMODE 0x8000
! 76: #define SR_SUPERMODE 0x2000
! 77: #define SR_IPL 0x0700
1.1 root 78:
1.1.1.10! root 79: #define SR_CLEAR_IPL 0xf8ff
1.1 root 80: #define SR_CLEAR_TRACEMODE 0x7fff
81: #define SR_CLEAR_SUPERMODE 0xdfff
82:
83: /* Exception vectors */
1.1.1.6 root 84: #define EXCEPTION_BUSERROR 0x00000008
1.1 root 85: #define EXCEPTION_ADDRERROR 0x0000000c
1.1.1.6 root 86: #define EXCEPTION_ILLEGALINS 0x00000010
87: #define EXCEPTION_DIVZERO 0x00000014
88: #define EXCEPTION_CHK 0x00000018
89: #define EXCEPTION_TRAPV 0x0000001c
90: #define EXCEPTION_TRACE 0x00000024
91: #define EXCEPTION_LINE_A 0x00000028
92: #define EXCEPTION_LINE_F 0x0000002c
93: #define EXCEPTION_HBLANK 0x00000068
94: #define EXCEPTION_VBLANK 0x00000070
95: #define EXCEPTION_TRAP0 0x00000080
96: #define EXCEPTION_TRAP1 0x00000084
97: #define EXCEPTION_TRAP2 0x00000088
98: #define EXCEPTION_TRAP13 0x000000B4
99: #define EXCEPTION_TRAP14 0x000000B8
1.1 root 100:
1.1.1.6 root 101: /* Find IPL - don't forget to call MakeSR() before you use it! */
1.1 root 102: #define FIND_IPL ((SR>>8)&0x7)
103:
104: /* Size of 68000 instructions */
105: #define MAX_68000_INSTRUCTION_SIZE 10 /* Longest 68000 instruction is 10 bytes(6+4) */
106: #define MIN_68000_INSTRUCTION_SIZE 2 /* Smallest 68000 instruction is 2 bytes(ie NOP) */
107:
108: /*
109: All the following processor timings are based on a bog standard 8MHz 68000 as found in all standard ST's
110:
111: Clock cycles per line (50Hz) : 512
112: NOPs per scan line (50Hz) : 128
1.1.1.7 root 113: Scan lines per VBL (50Hz) : 313 (64 at top,200 screen,49 bottom)
1.1 root 114:
115: Clock cycles per line (60Hz) : 508
116: NOPs per scan line (60Hz) : 127
1.1.1.7 root 117: Scan lines per VBL (60Hz) : 263
1.1 root 118:
1.1.1.7 root 119: Clock cycles per VBL (50Hz) : 160256
120: NOPs per VBL (50Hz) : 40064
1.1 root 121:
122: Pixels per clock cycle (low res) : 1
123: Pixels per clock cycle (med res) : 2
124: Pixels per clock cycle (high res) : 4
125: Pixels per NOP (low res) : 4
126: Pixels per NOP (med res) : 8
127: Pixels per NOP (high res) : 16
128: */
1.1.1.6 root 129: #define SCREEN_START_HBL 64 /* This is usually the first line of the displayed screen */
1.1 root 130: #define SCREEN_HEIGHT_HBL 200 /* This is usually the height of the screen */
131: #define FIRST_VISIBLE_HBL (SCREEN_START_HBL-OVERSCAN_TOP) /* Normal screen starts 64 lines in, top border is 28 lines */
1.1.1.6 root 132: #define NUM_VISIBLE_LINES (OVERSCAN_TOP+SCREEN_HEIGHT_HBL+OVERSCAN_BOTTOM) /* Number of visible screen lines including top/bottom borders */
1.1 root 133:
134: /* Assumes 32 pixels left+right */
135: #define SCREENBYTES_LEFT 16 /* Bytes for left border in ST screen */
1.1.1.6 root 136: #define SCREENBYTES_MIDDLE 160 /* Middle(320 pixels) */
137: #define SCREENBYTES_RIGHT 16 /* right border */
1.1 root 138: #define SCREENBYTES_LINE (SCREENBYTES_LEFT+SCREENBYTES_MIDDLE+SCREENBYTES_RIGHT)
139:
140: /* Overscan values */
1.1.1.6 root 141: #define OVERSCAN_LEFT (SCREENBYTES_LEFT*2) /* Number of pixels in each border */
1.1 root 142: #define OVERSCAN_RIGHT (SCREENBYTES_RIGHT*2)
1.1.1.6 root 143: #define OVERSCAN_TOP 29
144: #define OVERSCAN_BOTTOM 38
145: #define OVERSCAN_MIDDLE 320 /* Number of pixels across screen(low res) */
146:
147: #define SCREEN_START_CYCLE 96 /* Cycle first normal pixel appears on */
148: #define SCANLINES_PER_FRAME 313 /* Number of scan lines per frame */
149: #define CYCLES_PER_LINE 512 /* Cycles per horiztonal line scan */
1.1.1.7 root 150: #define CYCLES_VBL_IN (SCREEN_START_HBL*CYCLES_PER_LINE) /* ((28+64)*CYCLES_PER_LINE) */
1.1 root 151: #define CYCLES_PER_FRAME (SCANLINES_PER_FRAME*CYCLES_PER_LINE) /* Cycles per VBL @ 50fps = 160256 */
1.1.1.6 root 152: #define CYCLES_PER_SEC (CYCLES_PER_FRAME*50) /* Cycles per second */
153: #define CYCLES_ENDLINE (64+320+88+40) /* DE(Display Enable) */
154: #define CYCLES_HBL (CYCLES_PER_LINE+96) /* Cycles for first HBL - very inaccurate on ST */
1.1 root 155:
156: /* Illegal Opcode used to help emulation. eg. free entries are 8 to 15 inc' */
157: #define GEMDOS_OPCODE 8 /* Free op-code to intercept GemDOS trap */
1.1.1.7 root 158: #define SYSINIT_OPCODE 10 /* Free op-code to initialize system (connected drives etc.) */
1.1 root 159: #define VDI_OPCODE 12 /* Free op-code to call VDI handlers AFTER Trap#2 */
1.1.1.6 root 160:
1.1 root 161:
162: #define PRG_HEADER_SIZE 0x1c /* Size of header at start of ST .prg files */
163:
164:
165: extern BOOL bQuitProgram;
1.1.1.2 root 166: extern BOOL bEnableDebug;
1.1 root 167: extern BOOL bEmulationActive;
1.1.1.8 root 168: extern char szBootDiscImage[FILENAME_MAX];
169: extern char szWorkingDir[FILENAME_MAX];
170:
1.1 root 171:
172: extern void Main_MemorySnapShot_Capture(BOOL bSave);
173: extern void Main_PauseEmulation(void);
174: extern void Main_UnPauseEmulation(void);
1.1.1.9 root 175: extern void Main_WarpMouse(int x, int y);
176: extern void Main_EventHandler(void);
1.1 root 177:
1.1.1.6 root 178: #endif /* ifndef HATARI_MAIN_H */
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