From: Tobias Girstmair <tobi@isticktoit.net>
Date: Thu, 4 Mar 2021 01:02:38 +0000 (+0100)
Subject: new version
X-Git-Url: https://git.gir.st/Chiptunes-pms150c.git/commitdiff_plain/5ebb16dcc2e047ba1a4956de7ac9ce2ac4a18947

new version
---

diff --git a/bsv.c b/bsv.c
index e954cb2..9a3c608 100644
--- a/bsv.c
+++ b/bsv.c
@@ -1,7 +1,10 @@
+#include <stdio.h>
+#include "fakeasm.h"
 typedef unsigned char u8;
 
 u8 i0, i1, i2; //MEM
 u8 n; //MEM
+u8 sample; //MEM
 u8 acc; //ACC
 
 u8 notes[] = {
@@ -17,31 +20,26 @@ void g(u8 t){
 	acc = result;
 }
 void main(void){
-	i0 = i1 = i2 = 0;
-	// clear i0
-	// clear i1
-	// clear i2
+	CLEAR	(i0)
+	CLEAR	(i1)
+	CLEAR	(i2)
 	for(;;) {
-		u8 sample;
-		n = i2<<2 | i1>>6;
-		// mov n, i2
-		// sl n
-		// sl n
-		// mov acc, i1
-		// swap acc
-		// and acc, 0xf
-		// sr acc
-		// sr acc
-		// or n, acc
+		/*n = i2<<2 | i1>>6;*/
+		MOV	(n, i2)
+		SL	(n)
+		SL	(n)
+		MOV	(acc, i1)
+		SWAP	(acc)
+		AND	(acc, 0xf)
+		SR	(acc)
+		SR	(acc)
+		OR	(n, acc)
 
 		g(n);
 		//^TODO
-		acc >>= 4;
-		// swap acc
-		acc &= 1;
-		// and acc, 0x1
-		sample = acc;
-		// mov sample, acc
+		SWAP	(acc)
+		AND	(acc, 0x1)
+		MOV	(sample, acc)
 
 		{ u8 tmp;
 		  tmp = i2<<3 | i1>>5;
@@ -49,16 +47,11 @@ void main(void){
 		g(tmp);
 		//^TODO
 		} //tmp
-		acc >>= 1;
-		// sr acc
-		acc &= i2;
-		// and acc, i2
-		acc >>= 1;
-		// sr acc
-		acc &= 3;
-		// and acc, 3
-		sample += acc;
-		// add sample, acc
+		SR	(acc)
+		AND	(acc, i2)
+		SR	(acc)
+		AND	(acc, 3)
+		ADD	(sample, acc)
 
 		{ u8 tmp2;
 		  tmp2 = (i2<<5|i1>>3)%3;
@@ -66,17 +59,13 @@ void main(void){
 		g(tmp2);
 		//^TODO
 		} //tmp2
-		acc >>= 2;
-		// sr acc
-		// sr acc
+		SR	(acc)
+		SR	(acc)
 		{ u8 tmp1 = i2/6;
-		acc &= tmp1;
-		//^TODO
+		AND	(acc, tmp1)
 		} //tmp1
-		acc &= 3;
-		// and acc, 3
-		sample += acc;
-		// add sample, acc
+		AND	(acc, 3)
+		ADD	(sample, acc)
 
 		{ u8 tmp2 = n;
 		  { u8 tmp3 = (i2<<6|i1>>2)%3;
@@ -85,12 +74,12 @@ void main(void){
 		  tmp2 += 8;
 		g(tmp2);
 		} //tmp2
-		acc >>= 1;
+		SR	(acc)
 		{ u8 tmp1 = i2/10;
-		acc &= tmp1;
+		AND	(acc, tmp1)
 		} //tmp1
-		acc &= 3;
-		sample += acc;
+		AND	(acc, 3)
+		ADD	(sample, acc)
 
 		putchar(sample<<4);
 
diff --git a/fakeasm.h b/fakeasm.h
new file mode 100644
index 0000000..946be8a
--- /dev/null
+++ b/fakeasm.h
@@ -0,0 +1,8 @@
+#define MOV(dst, src)	dst = src;
+#define SL(dst)		dst <<= 1;
+#define SR(dst)		dst >>= 1;
+#define SWAP(dst)	dst = (dst<<4 | dst>>4); //XXX: only for ACC!
+#define AND(dst, src)	dst &= src;  //xxx: overloaded for acc/mem/imm
+#define OR(dst, src)	dst |= src;
+#define CLEAR(dst)	dst = 0;
+#define ADD(dst, src)	dst += src; //xxx: overloaded for acc/mem/imm