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authorNao Pross <naopross@thearcway.org>2017-05-02 00:06:10 +0200
committerNao Pross <naopross@thearcway.org>2017-05-02 00:06:10 +0200
commit752e0fd9ec166ea8a513294fd44b7203af03d684 (patch)
tree94f6000ed20ef39bfdd3f85caad801a6e53ba072 /sw/z80/crt0.s
parentMerge branch 'master' of https://github.com/NaoPross/z80uPC (diff)
downloadz80uPC-752e0fd9ec166ea8a513294fd44b7203af03d684.tar.gz
z80uPC-752e0fd9ec166ea8a513294fd44b7203af03d684.zip
switch to sdcc
- update of the makefile to use sdcc, since it is more popular and it's easier to insall on other computers - fix of crt0.s (old loader.asm) for the new compiler - change of the structure in the source code folder to separate betweeen libc and kernel code
Diffstat (limited to 'sw/z80/crt0.s')
-rw-r--r--sw/z80/crt0.s30
1 files changed, 30 insertions, 0 deletions
diff --git a/sw/z80/crt0.s b/sw/z80/crt0.s
new file mode 100644
index 0000000..d0ae3ca
--- /dev/null
+++ b/sw/z80/crt0.s
@@ -0,0 +1,30 @@
+ .area _HEADER (ABS)
+ ;; reset vector
+ .org 0
+ jp init
+
+ .org 0x08
+ reti
+ .org 0x10
+ reti
+ .org 0x18
+ reti
+ .org 0x20
+ reti
+ .org 0x28
+ reti
+ .org 0x30
+ reti
+ .org 0x38
+ reti
+
+ .org 0x100
+
+init:
+ ;; set stack
+ ld sp,#0xFFFF
+
+ ;; call C main function
+ call _main
+
+.globl _main