+special debug commands, +instruction data

1 files changed, 20 insertions, 2 deletions

diff --git a/debug.c b/debug.c
index ec6a75a..4e0b270 100644
--- a/debug.c
+++ b/debug.c
@@ -4,7 +4,7 @@
  *	Note that zero-page addressing is not fully emulated yet; it will still address the zero-page
  	section of memory but the instructions still take an address of length 4.
 	This will be fixed later when the whole system is functional.
- *	
+ *	There are a few special keywords which have particular debugging meaning
  */
 
 #include"include.h"
@@ -17,12 +17,30 @@ int charToNum (char c, int mul) {
 	}
 }
 
+void debug_print(){
+	printf("\nacc:\t%x\nX:\t%x\nY:\t%x\nstack:\t%x\nflags:\t%x", acc, X, Y, S, P);
+}
+
 int main(){
 	char c;
 	unsigned char a, b;
 	while(true){
 		// Pass 1
-		c = getchar(); if (c == EOF) break;
+		c = getchar();
+		if (c == EOF) break;
+		switch(c){
+			case D: case d:
+				debug_print();
+				break;
+			case M: case m:
+				int m = 0;
+				for(int i = 1; i <= 1000; i *= 10){
+					m += charToNum(getchar(), 1000/i);
+				}
+				printf("Address %d has %x", m, Memory[m]);
+				break;
+
+		}
 		a += charToNum(c, 0x10);
 		// Pass 2
 		c = getchar(); if (c == EOF) break;