ref: e52c3b4a5ba1574b1ff65e134fb9118fe2a86bba
dir: /sys/src/games/c64/dat.h/
extern u8int reg[47], crom[4096], krom[8192], brom[8192], cram[1024], cart[16384];
extern u16int pc, curpc;
extern u8int rP;
extern int nrdy, irq, nmi, irqen, nmien;
extern u8int pla;
extern uchar *tape, tapever, tapeplay;
extern ulong tapelen;
extern u16int ppux, ppuy, picw, pich;
extern u16int joys;
extern int region;
enum {
FLAGC = 1<<0,
FLAGZ = 1<<1,
FLAGI = 1<<2,
FLAGD = 1<<3,
FLAGB = 1<<4,
FLAGV = 1<<6,
FLAGN = 1<<7,
};
enum {
IRQRASTER = 1<<0,
IRQBGCOLL = 1<<1,
IRQSPRCOLL = 1<<2,
IRQLIGHT = 1<<3,
IRQTIMERA = 1<<4,
IRQTIMERB = 1<<5,
IRQTOD = 1<<6,
IRQSDR = 1<<7,
IRQFLAG = 1<<8,
IRQRESTORE = 1<<9,
};
enum{
MSBX = 0x10,
CTRL1 = 0x11,
RASTER = 0x12,
SPREN = 0x15,
CTRL2 = 0x16,
SPRYE = 0x17,
MEMP = 0x18,
IRQLATCH = 0x19,
IRQEN = 0x1a,
SPRDP = 0x1b,
SPRMC = 0x1c,
SPRXE = 0x1d,
SPRSPR = 0x1e,
SPRBG = 0x1f,
EC = 0x20,
BG0 = 0x21,
BG1 = 0x22,
BG2 = 0x23,
BG3 = 0x24,
SPRMC0 = 0x25,
SPRMC1 = 0x26,
SPRCOL = 0x27
};
enum {
LORAM = 1,
HIRAM = 2,
CHAREN = 4,
GAME = 8,
EXROM = 16,
ECM = 0x40,
BMM = 0x20,
DEN = 0x10,
RSEL = 0x08,
CSEL = 0x08,
MCM = 0x10,
};
enum {
HZ = 3579545,
RATE = 44100,
SAMPDIV = HZ / 3 / RATE,
};
enum {
NTSC,
NTSC0,
PAL
};