X-Git-Url: http://gitweb.hugovil.com/?a=blobdiff_plain;f=src%2Fpgmwin.c;h=0e8961bd0d51d92a65174cd08e80908d898416de;hb=359b0be02becb952016f0f79f6e608c7737378e7;hp=6760b665f231cf0744f496b4d7803be32d53a0c8;hpb=484f0d39a023a96309f081afa06eb90ef946d158;p=emu8051.git

diff --git a/src/pgmwin.c b/src/pgmwin.c
index 6760b66..0e8961b 100644
--- a/src/pgmwin.c
+++ b/src/pgmwin.c
@@ -220,7 +220,8 @@ pgmwin_refresh(void)
 		int valid;
 		GtkTreeIter iter;
 		char str[128];
-		int k;		int col_id;
+		int k;
+		int col_id;
 		int InstSize;
 		unsigned char OpCode;
 
@@ -239,38 +240,60 @@ pgmwin_refresh(void)
 			return;
 		}
 
-		/* Display breakpoints. */
-		if (IsBreakpoint(Address))
-			sprintf(str, "*");
-		else
-			str[0] = '\0';
+		if (Address > 0xFFFF) {
+			/*
+			 * Not the most elegant solution, but it works to not
+			 * display instructions past last address, 0xFFFF.
+			 */
+			gtk_list_store_set(store, &iter,
+					   COL_BREAKPT, NULL,
+					   COL_ADDR, NULL,
+					   COL_B0, NULL,
+					   COL_B1, NULL,
+					   COL_B2, NULL,
+					   COL_INST, NULL,
+					   COL_ARGS, NULL,
+					   COL_COLOR, NULL,
+					   -1);
+		} else {
+			/* Display breakpoints. */
+			if (IsBreakpoint(Address))
+				sprintf(str, "*");
+			else
+				str[0] = '\0';
 
-		gtk_list_store_set(store, &iter, COL_BREAKPT, str, -1);
+			gtk_list_store_set(store, &iter, COL_BREAKPT, str, -1);
 
-		/* Display base address. */
-		int2asciihex(Address, str, 4);
+			/* Display base address. */
+			int2asciihex(Address, str, 4);
 
-		gtk_list_store_set(store, &iter, COL_ADDR, str, -1);
+			gtk_list_store_set(store, &iter, COL_ADDR, str, -1);
 
-		OpCode = memory_read8(PGM_MEM_ID, Address);
-		InstSize = cpu8051_get_instruction_size(OpCode);
+			OpCode = memory_read8(PGM_MEM_ID, Address);
+			InstSize = cpu8051_get_instruction_size(OpCode);
 
-		/* Display instruction hex bytes. */
-		for (k = 0, col_id = COL_B0; k < InstSize; k++, col_id++) {
-			int2asciihex(memory_read8(PGM_MEM_ID, Address + k),
-				     str, 2);
-			gtk_list_store_set(store, &iter, col_id, str, -1);
-		}
+			/* Display instruction hex bytes. */
+			for (k = 0, col_id = COL_B0; k < 3; k++, col_id++) {
+				if (k < InstSize)
+					int2asciihex(memory_read8(PGM_MEM_ID,
+								  Address + k),
+						     str, 2);
+				else
+					str[0] = '\0';
 
-		/* Display instruction menmonic. */
-		cpu8051_disasm_mnemonic(OpCode, str);
-		gtk_list_store_set(store, &iter, COL_INST, str, -1);
+				gtk_list_store_set(store, &iter, col_id, str, -1);
+			}
 
-		/* Display instruction arguments (if applicable). */
-		str[0] = '\0';
-		cpu8051_disasm_args(Address, str);
-		gtk_list_store_set(store, &iter, COL_ARGS, str, -1);
+			/* Display instruction menmonic. */
+			cpu8051_disasm_mnemonic(OpCode, str);
+			gtk_list_store_set(store, &iter, COL_INST, str, -1);
 
-		Address += InstSize;
+			/* Display instruction arguments (if applicable). */
+			str[0] = '\0';
+			cpu8051_disasm_args(Address, str);
+			gtk_list_store_set(store, &iter, COL_ARGS, str, -1);
+
+			Address += InstSize;
+		}
 	}
 }