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[Chiptunes.git] / fakeasm.h

diff --git a/fakeasm.h b/fakeasm.h
index cfb459868eccfa90c0f7c7a2cf42e17e49904be8..e5485170173923c6bce356ee3c9c7e7e57d72afc 100644 (file)
--- a/fakeasm.h
+++ b/fakeasm.h
@@ -15,17 +15,24 @@
 #define SUB(x,y)  x -= y; //TODO: carry
 #define SUBI(x,n) x -= (u8)n; //TODO: carry
 #define INC(x)    x++; //WARN: does not set carry
+#define DEC(x)    x--; sr_zero=!x;
 #define MOV(x,y)  x = y;
 #define LDI(x,n)  x = n;
-#define SBRC(x,b) if (x & b) //skip if cleared => do if set
+#define SBRC(x,b) if (x & 1<<b) //skip if cleared => do if set
+#define SBRS(x,b) if (!(x & 1<<b)) //skip if set => do if not
 #define CLR(x)    x = 0;
 #define RET       return;
 #define RCALL    //pseudo
 int sr_zero = 0; //status register zero bit
 #define TST(x)    if(x==0)sr_zero=1;else sr_zero=0; //WARN: not a complete TST mockup
 #define BREQ(l)   if(sr_zero) goto l;
+#define BRNE(l)   if(!sr_zero) goto l;
 int carry = 0; //status register carry bit //WARN: not respected by all mocked instructions
 int asmtmp = 0;
 #define ROL(x) asmtmp = x>>7; x <<= 1; x |= carry; carry = asmtmp;
 #define ROR(x) asmtmp = x&0x1; x >>= 1; x |= carry<<7; carry = asmtmp;
 #define NEG(x) x *= -1;
+int sr_neg = 0;
+#define CPI(x,n)  sr_neg = (x-n < 0);sr_zero = (x-n == 0); //WARN: not a complete CPI mockup
+#define BRPL(l)   if (sr_neg) goto l;
+#define RJMP(l)   goto l;