ref: c3ba64f6935322f09b6de5c2285544fd471c605d
dir: /sys/src/games/blit/dat.h/
extern u32int curpc, irq; extern int trace, debug; extern ushort ram[128*1024]; extern int daddr; extern ushort dstat; extern uchar invert; extern int mousex, mousey, mousebut; extern int vblctr, uartrxctr; extern int baud; enum { INTKEY = 1, INTMOUSE = 2, INTUART = 4, INTVBL = 8, }; enum { SX = 800, SY = 1024, FREQ = 8000*1000, VBLDIV = FREQ / 60, };