M xyw.c → xyw.c

@@ -3,6 +3,7 @@ #include <string.h>
 #include "xyw.h"
 
 int xyw_debug = 0;
+int xyw_zoom = 1;
 
 // Instruction mnemonics definition
 const char xyw_instructions[][4] = {
@@ -36,11 +37,15 @@ if (flag(argv[i], "debug"))
         {
             xyw_debug = 1;
         }
+        if (flag(argv[i], "zoom"))
+        {
+            xyw_zoom = 2;
+        }
     }
 
     for (int i = 1; i < argc; i++)
     {
-        if (flag(argv[i], "debug"))
+        if (flag(argv[i], "debug") || flag(argv[i], "zoom"))
         {
             continue; // already handled
         }

M xyw.h → xyw.h

@@ -33,6 +33,7 @@ // clang-format on
 
 extern const char xyw_instructions[][4];
 extern int xyw_debug;
+extern int xyw_zoom;
 extern xyw_device xyw_devices[XYW_TOTAL_DEVICES];
 
 int xyw_assemble(const char *input, const char *output);

M xywrun.c → xywrun.c

@@ -369,8 +369,8 @@ process_metadata();
     // Set direct page to device page by default
     xyw_memory[SYSTEM_PAGE] = 0xff;
     // Initialize fenster
-    uint32_t buf[width * height];
-    struct fenster f = {.title = title, .width = width, .height = height, .buf = buf};
+    uint32_t buf[width * height * xyw_zoom * xyw_zoom];
+    struct fenster f = {.title = title, .width = width * xyw_zoom, .height = height * xyw_zoom, .buf = buf};
     fenster_open(&f);
     xyw_byte paused = 0;
     while (fenster_loop(&f) == 0 && xyw_memory[SYSTEM_STATE] && *pc < SYSTEM_MEMORY_START)