Category : Network Files
Archive   : KA9Q.ZIP
Filename : 8530.C

/* Routines generic to all interfaces with 8530s */
#include "global.h"
#include "8530.h"

/* Write 8530 register */
void
write_scc(ctl,reg,val)
register int16 ctl;
int16 reg,val;
{
char i_state;

i_state = disable();
/* Select register; note that point high is also written */
if(reg != R0)
outportb(ctl,(char)(NULLCODE|reg));
outportb(ctl,(char)val);
restore(i_state);
}
/* Read 8530 register */
char
read_scc(ctl,reg)
register int16 ctl;
char reg;
{
char c,i_state;

i_state = disable();
/* Select register; note that point high is also written */
if(reg != R0)
outportb(ctl,(char)NULLCODE|reg);
c = inportb(ctl);
restore(i_state);
return c;
}