Prevent dissassembling instructions past last address

diff --git a/src/emuconsole.c b/src/emuconsole.c
index d5784b8..f29146d 100644 (file)
--- a/src/emuconsole.c
+++ b/src/emuconsole.c
@@ -110,6 +110,9 @@ DisasmN(unsigned int Address, int NumberInst)
        for (Row = 0; Row < NumberInst ; Row++) {
                Address += cpu8051_Disasm(Address, TextTmp);
                printf("%s\n", TextTmp);
+
+               if (Address > 0xFFFF)
+                       return;
        }
 }
 

diff --git a/src/pgmwin.c b/src/pgmwin.c
index 6760b66..2e6927a 100644 (file)
--- a/src/pgmwin.c
+++ b/src/pgmwin.c
@@ -239,38 +239,55 @@ 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 < 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 menmonic. */
-               cpu8051_disasm_mnemonic(OpCode, str);
-               gtk_list_store_set(store, &iter, COL_INST, str, -1);
+                       /* Display instruction menmonic. */
+                       cpu8051_disasm_mnemonic(OpCode, str);
+                       gtk_list_store_set(store, &iter, COL_INST, 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 arguments (if applicable). */
+                       str[0] = '\0';
+                       cpu8051_disasm_args(Address, str);
+                       gtk_list_store_set(store, &iter, COL_ARGS, str, -1);
 
-               Address += InstSize;
+                       Address += InstSize;
+               }
        }
 }