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Annotation of uae/src/include/custom.h, revision 1.1.1.2

1.1       root        1:  /* 
                      2:   * UAE - The Un*x Amiga Emulator
                      3:   * 
                      4:   * custom chip support
                      5:   *
                      6:   * (c) 1995 Bernd Schmidt
                      7:   */
                      8: 
                      9: extern void custom_init(void);
                     10: extern void customreset(void);
                     11: extern int intlev(void);
                     12: extern void dumpcustom(void);
                     13: 
                     14: extern void do_disk(void);
                     15: 
                     16: extern int inhibit_frame;
                     17: extern int bogusframe;
                     18: 
                     19: extern UWORD dmacon;
                     20: extern UWORD intena,intreq;
1.1.1.2 ! root       21: 
        !            22: extern int current_hpos (void);
        !            23: 
1.1       root       24: static __inline__ int dmaen(UWORD dmamask)
                     25: {
                     26:     return (dmamask & dmacon) && (dmacon & 0x200);
                     27: }
                     28: 
                     29: #define SPCFLAG_STOP 2
                     30: #define SPCFLAG_DISK 4
                     31: #define SPCFLAG_INT  8
                     32: #define SPCFLAG_BRK  16
                     33: #define SPCFLAG_EXTRA_CYCLES 32
                     34: #define SPCFLAG_TRACE 64
                     35: #define SPCFLAG_DOTRACE 128
                     36: #define SPCFLAG_DOINT 256
                     37: #define SPCFLAG_BLTNASTY 512
                     38: #define SPCFLAG_EXEC 1024
                     39: #define SPCFLAG_EMULTRAP 2048
1.1.1.2 ! root       40: #define SPCFLAG_TIMER 4096
        !            41: #define SPCFLAG_MODE_CHANGE 8192
1.1       root       42: 
1.1.1.2 ! root       43: #define PRESERVED_FLAGS (SPCFLAG_DISK|SPCFLAG_BLTNASTY|SPCFLAG_TIMER)
1.1       root       44: 
                     45: extern int dskdmaen;
                     46: extern UWORD adkcon;
                     47: 
                     48: extern UWORD joy0dir;
                     49: extern int joy0button;
                     50: 
                     51: extern void INTREQ(UWORD);
                     52: extern UWORD INTREQR(void);
1.1.1.2 ! root       53: extern UWORD DMACONR(void);
1.1       root       54: 
                     55: #define maxhpos 227
                     56: #define maxvpos 312
1.1.1.2 ! root       57: /* The HRM says: The vertical blanking area (PAL) ranges from line 0 to line 29,
        !            58:  * and no data can be displayed there. Nevertheless, we lose some overscan data
        !            59:  * if this is set to 29. */
        !            60: #define minfirstline 21
        !            61: #define vblank_endline 29
1.1       root       62: #define numscrlines (maxvpos+1-minfirstline+1)
                     63: 
                     64: #define DMA_AUD0      0x0001
                     65: #define DMA_AUD1      0x0002
                     66: #define DMA_AUD2      0x0004
                     67: #define DMA_AUD3      0x0008
                     68: #define DMA_DISK      0x0010
                     69: #define DMA_SPRITE    0x0020
                     70: #define DMA_BLITTER   0x0040
                     71: #define DMA_COPPER    0x0080
                     72: #define DMA_BITPLANE  0x0100
                     73: #define DMA_BLITPRI   0x0400
1.1.1.2 ! root       74: 
        !            75: extern unsigned long frametime, timeframes;
        !            76: 

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