summaryrefslogtreecommitdiffstats
path: root/sw/z80/loader.asm
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--sw/z80/loader.asm18
1 files changed, 18 insertions, 0 deletions
diff --git a/sw/z80/loader.asm b/sw/z80/loader.asm
new file mode 100644
index 0000000..85f5abe
--- /dev/null
+++ b/sw/z80/loader.asm
@@ -0,0 +1,18 @@
+; C crt0 loader
+;
+ module crt0
+
+; general scope declarations
+ extern _main ; C code
+
+; startup code
+ org 0000h ; reset vector
+ jp _start
+
+_start:
+ ld sp, 0xffff
+ call _main
+ jp _exit
+
+_exit:
+ ret