Latest compatible version of Classicube from the original GitHub repository (https://github.com/ClassiCube/ClassiCube) that can be compiled on Classicube for PowerMac PPC running Mac OS X 10.4.

misc/ds/main_arm7.c

@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: Zlib
+//
+// Copyright (C) 2005 Michael Noland (joat)
+// Copyright (C) 2005 Jason Rogers (Dovoto)
+// Copyright (C) 2005-2015 Dave Murphy (WinterMute)
+// Copyright (C) 2023 Antonio Niño Díaz
+
+// Default ARM7 core
+#include <dswifi7.h>
+#include <nds.h>
+
+volatile bool exit_loop = false;
+
+static void power_button_callback(void) {
+    exit_loop = true;
+}
+
+static void vblank_handler(void) {
+    inputGetAndSend();
+    Wifi_Update();
+}
+
+int main(int argc, char *argv[]) {
+    enableSound();
+    readUserSettings();
+    ledBlink(0);
+    touchInit();
+
+    irqInit();
+    irqSet(IRQ_VBLANK, vblank_handler);
+
+    fifoInit();
+    installWifiFIFO();
+    installSoundFIFO();
+    installSystemFIFO();
+
+    setPowerButtonCB(power_button_callback);
+
+    initClockIRQTimer(3);
+    irqEnable(IRQ_VBLANK | IRQ_RTC);
+
+    while (!exit_loop)
+    {
+        const uint16_t key_mask = KEY_SELECT | KEY_START | KEY_L | KEY_R;
+        uint16_t keys_pressed = ~REG_KEYINPUT;
+
+        if ((keys_pressed & key_mask) == key_mask)
+            exit_loop = true;
+
+        swiWaitForVBlank();
+    }
+
+    return 0;
+}