3 extern u8int reg[47], crom[4096], krom[8192], brom[8192], cram[1024], cart[16384];
5 extern u16int pc, curpc;
7 extern int nrdy, irq, nmi, irqen, nmien, trace;
11 extern uchar *tape, tapever, tapeplay;
14 extern u16int ppux, ppuy, picw, pich;
17 extern int scale, region;
84 BILLION = 1000*1000*1000,
88 SAMPDIV = HZ / 3 / RATE,