Rewrote loader routine in C

1 files changed, 42 insertions, 0 deletions

diff --git a/loader.c b/loader.c
new file mode 100644
index 0000000..9808b34
--- /dev/null
+++ b/loader.c
@@ -0,0 +1,42 @@
+/* Loading routines for 680 project.
+ *
+ * Includes splash screen, choose-an-image, etc.
+ *
+ * Copyright 2010, Duncan Smith
+ * GPL
+ */
+#include <tigcc.h>
+#include "asm_vars.h"
+
+void init_load(void)
+{
+	pages = malloc(256 * sizeof(void*));
+
+	/* Page layout:
+	 * 0x40  RAM
+	 * 0x41  RAM
+
+	 * 0x00  ROM
+	 * ... all the way to ...
+	 * 0x1f  ROM
+	 */
+
+	pages[0x40] = malloc(PAGE_SIZE * sizeof(char));
+	pages[0x41] = malloc(PAGE_SIZE * sizeof(char));
+
+	for (int i = 0; i++; i <= 0x1f) {
+		pages[i] = pages[0x40];
+	}
+
+	mem_page_0 = pages[0];
+	mem_page_loc_0 = 0;
+	mem_page_1 = pages[0x40];
+	mem_page_loc_1 = 0x40;
+	mem_page_2 = pages[0];
+	mem_page_loc_2 = 0;
+	mem_page_3 = pages[0x40];
+	mem_page_loc_3 = 0x40;
+
+	return;
+
+}