static int CheckExtend(struct Position *p) {
int kp = p->kingSq[p->turn];
BitBoard att;
att = p->atkFr[kp] & p->mask[OPP(p->turn)][0];
if (CountBits(att) > 1) {
/*
* double check, the king has to move
* count no. of flight squares, if only one, extend deeper
*
*/
BitBoard ff;
int i;
int cnt = 0;
DblExt++;
ff = KingEPM[kp] & ~p->mask[p->turn][0];
att &= p->slidingPieces;
while (att) {
i=FindSetBit(att);
ClrBit(att, i);
ff &= ~Ray[i][kp];
}
while (ff) {
i=FindSetBit(ff);
ClrBit(ff, i);
if (!(p->atkFr[i] & p->mask[OPP(p->turn)][0])) cnt++;
if (cnt > 1) return ExtendDoubleCheck;
}
} else {
BitBoard ff;
BitBoard def;
BitBoard tmp;
int atp = FindSetBit(att);
int cnt = 0;
int i;
int nd = 0;
/* discovered check */
if (atp != M_TO((p->actLog-1)->gl_Move)) {
DiscExt++;
nd = ExtendDiscoveredCheck;
}
ff = KingEPM[kp] & ~p->mask[p->turn][0];
i = FindSetBit(att);
if (Sliding[TYPE(p->piece[i])]) ff &= ~Ray[i][kp];
/* check for king flight squares */
while (ff) {
i=FindSetBit(ff);
ClrBit(ff, i);
if (!(p->atkFr[i] & p->mask[OPP(p->turn)][0])) cnt++;
if (cnt > 1) return nd;
}
/* Find all non-pinned defenders */
def = p->mask[p->turn][0] & ~p->mask[p->turn][King];
tmp = (p->mask[OPP(p->turn)][Bishop] | p->mask[OPP(p->turn)][Queen])
& BishopEPM[kp];
while (tmp) {
BitBoard tmp2;
i=FindSetBit(tmp);
ClrBit(tmp, i);
tmp2= InterPath[i][kp];
if (tmp2 && !(p->mask[OPP(p->turn)][0] & tmp2)) {
tmp2 &= p->mask[p->turn][0];
if (CountBits(tmp2) == 1) {
ClrBit(def, FindSetBit(tmp2));
}
}
}
tmp = (p->mask[OPP(p->turn)][Rook] | p->mask[OPP(p->turn)][Queen])
& RookEPM[kp];
while (tmp) {
BitBoard tmp2;
i=FindSetBit(tmp);
ClrBit(tmp, i);
tmp2= InterPath[i][kp];
if (tmp2 && !(p->mask[OPP(p->turn)][0] & tmp2)) {
tmp2 &= p->mask[p->turn][0];
if (CountBits(tmp2) == 1) {
ClrBit(def, FindSetBit(tmp2));
}
}
}
/* All non-pinned defenders are in 'def' */
tmp = p->atkFr[atp] & def;
cnt += CountBits(tmp);
if (cnt > 1) return nd;
/* if possible, try an interposition */
if (Sliding[TYPE(p->piece[atp])]) {
tmp = InterPath[atp][kp];
while (tmp) {
BitBoard tmp2;
i=FindSetBit(tmp);
ClrBit(tmp, i);
if ((tmp2 = p->atkFr[i] & def)) {
cnt+=CountBits(tmp2);
}
if (p->turn == White
&& (i-8) > 0
&& TstBit(p->mask[White][Pawn], i-8)
&& TstBit(def, i-8)) cnt++;
if (p->turn == Black
&& (i+8) < 64
&& TstBit(p->mask[Black][Pawn], i+8)
&& TstBit(def, i+8)) cnt++;
if (cnt > 1) return nd;
}
}
}
/* If we get here, we have only one legal move. */
SingExt++;
return ExtendSingularReply;
}
/*-----------------------------------------------------------------------------*
* Function Description: *
* LED处理进程. *
* Parameters: *
* None *
* Return *
* None *
*----------------------------------------------------------------------------*/
void LedProc(void)
{
g_u8LedTxDAT1 = 0;
g_u8LedTxDAT2 = 0;
if(bSys_1000MS)
{
if(bLEDBlank)
bLEDBlank = 0;
else
bLEDBlank = 1;
}
if(bLEDBlank)
{
g_u8LedBuf = g_u8LedVal;
}
else
{
g_u8LedBuf = g_u8LedVal & (~g_u8LedBlank);
}
if((bPwroffline==1)||(bLidOCDEn==0)) //掉电或开盖时关闭指示灯
{
Enter_Bank1;
IO_LED_BKL = 0;
Enter_Bank0;
}
else
{
if(TstBit(g_u8LedBuf,NUM_LED_START))
{
SetBit(g_u8LedTxDAT1, NUM_LED_START);
}
if(TstBit(g_u8LedBuf,NUM_LED_STOP))
{
SetBit(g_u8LedTxDAT1, NUM_LED_STOP);
}
if(TstBit(g_u8LedBuf,NUM_LED_REHEAT))
{
SetBit(g_u8LedTxDAT1, NUM_LED_REHEAT);
}
if(TstBit(g_u8LedBuf,NUM_LED_WARM))
{
SetBit(g_u8LedTxDAT1, NUM_LED_WARM);
}
if(TstBit(g_u8LedBuf,NUM_LED_DELAY))
{
SetBit(g_u8LedTxDAT1, NUM_LED_DELAY);
}
if(TstBit(g_u8LedBuf,NUM_LED_BKL))
{
Enter_Bank1;
IO_LED_BKL = 1;
Enter_Bank0;
}
else
{
Enter_Bank1;
IO_LED_BKL = 0;
Enter_Bank0;
}
g_u8LedTxDAT2 = g_u8LedTxDAT1<<3;
}
}
