1 /* normally defined in ../port/portdat.h */ 2 #define ROUND(s, sz) (((s)+(sz-1))&~(sz-1)) 3 #define PGROUND(s) ROUNDUP(s, BY2PG) 4 #define HOWMANY(x, y) (((x)+((y)-1))/(y)) 5 #define ROUNDUP(x, y) (HOWMANY((x), (y))*(y)) /* ceiling */ 6 7 void cgainit(void); 8 void cgaputc(int); 9 int inb(int); 10 void outb(int, int); 11