From 0248da5e2c262d6934fd48c23212d866e250b9ed Mon Sep 17 00:00:00 2001 From: Duncan Smith Date: Sat, 26 Jun 2010 21:28:22 -0700 Subject: Rewrote loader routine in C --- loader.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 loader.c (limited to 'loader.c') 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 +#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; + +} -- cgit v1.2.3