Add true start and end ROM addresses

1 files changed, 7 insertions, 2 deletions

diff --git a/1_hello_world/startup.c b/1_hello_world/startup.c
index 06ca39e..e743214 100644
--- a/1_hello_world/startup.c
+++ b/1_hello_world/startup.c
@@ -29,6 +29,8 @@ static __attribute__((interrupt)) void VSYNC_handler(void);
 static __attribute__((interrupt)) void CPUException_handler(void);
 
 extern unsigned __stacktop;
+extern unsigned __rom_start;
+extern unsigned __rom_end;
 
 __attribute__((section(".stack"), used)) unsigned *__stack_init = &__stacktop;
 
@@ -106,8 +108,8 @@ __attribute__((section(".smd_header"), used)) struct smd_header __smd_header = {
     .version = "GM XXXXXXXX-XX",
     .checksum = 0x0000,
     .io_support = "J               ",
-    .rom_start = 0,
-    .rom_end = 0xfffff,
+    .rom_start = (unsigned long)&__rom_start,
+    .rom_end = (unsigned long)&__rom_end-1,
     .ram_start = 0xff0000,
     .ram_end = 0xffffff,
     .sram_enabled = 0x00000000,
@@ -124,8 +126,11 @@ static void __start(void)
 {
     main();
 }
+
 static void HSYNC_handler(void) {}
+
 static void VSYNC_handler(void) {}
+
 static void CPUException_handler(void)
 {
      asm inline volatile ("  stop #2700");