trap_retval ReqRead_user_keyboard( void )
{
read_user_keyboard_req *acc;
read_user_keyboard_ret *ret;
acc = GetInPtr( 0 );
ret = GetOutPtr( 0 );
ret->key = 0;
if( acc->wait != 0 ) {
unsigned long end_time;
unsigned long *cur_time;
cur_time = MK_FP( 0x40, 0x6c ); /* set up pointer to the BIOS clock */
end_time = *cur_time + ( acc->wait * 18 );
for( ;; ) {
if( KeyWaiting() == 0 ) {
break;
} else if( end_time <= *cur_time ) {
return( sizeof( *ret ) );
}
}
}
ret->key = GtKey();
return( sizeof( *ret ) );
}
static unsigned_16 AccReadUserKey()
{
rd_key_return FAR *retblk;
retblk = GetOutPtr( 0 );
retblk->key = GtKey();
return( sizeof( rd_key_return ) );
}