X-Git-Url: https://git.gir.st/Chiptunes.git/blobdiff_plain/1b023e92b8e7cf629d3c94c33608d9c2eb7135a0..5d4207f9a0b24eec52054fa1674cded926f06a72:/foo.c?ds=sidebyside

diff --git a/foo.c b/foo.c
index 06ff396..4caddea 100644
--- a/foo.c
+++ b/foo.c
@@ -36,8 +36,16 @@ int main(void) {
 	u8 acc;
 	//TODO: clear all vars/registers
 	for (;;) {
-		acc = 0;
-		n = (i2<<2 | i1>>6);
+		MOV	(n, i2)
+		LSL	(n)
+		LSL	(n)
+		#define tmp acc
+		MOV	(tmp, i1)
+		SWAP	(tmp)
+		ANDI	(tmp, 0x0f)
+		tmp >>= 2;
+		OR	(n, tmp)
+		#undef tmp
 		s = (i3<<7 | i2>>1);
 
 		//voice 1:
@@ -50,12 +58,17 @@ int main(void) {
 		//voice 2:
 		MOV	(x, s)
 		#define tmp o
-		MOV	(o, i2)
-		LSL	(o)
-		LSL	(o)
-		LSL	(o)
+		MOV	(tmp, i2)
+		LSL	(tmp)
+		LSL	(tmp)
+		LSL	(tmp)
+		MOV	(t, i1)
+		SWAP	(t)
+		ANDI	(t, 0xf)
+		LSR	(t)
+		OR	(t, tmp)
 		#undef tmp
-		t = n ^ (o | i1>>5);
+		EOR	(t, n)
 		LDI	(o, 10)
 		RCALL	g();
 		ADD	(acc, t)