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| author | Nao Pross <naopross@thearcway.org> | 2017-05-02 00:13:41 +0200 |
|---|---|---|
| committer | Nao Pross <naopross@thearcway.org> | 2017-05-02 00:13:41 +0200 |
| commit | 91ef167f07c34817acb0150302379cc70782e73d (patch) | |
| tree | 47f25dab2c4eae1ab8a04ddf34986843a48def7e /sw/z80/crt0.s | |
| parent | switch from GAL (pld) to M4 32/32 CPLD (diff) | |
| parent | switch to sdcc (diff) | |
| download | z80uPC-91ef167f07c34817acb0150302379cc70782e73d.tar.gz z80uPC-91ef167f07c34817acb0150302379cc70782e73d.zip | |
Merge branch 'master' into naopross
Diffstat (limited to '')
| -rw-r--r-- | sw/z80/crt0.s | 30 | ||||
| -rw-r--r-- | sw/z80/crt0.s.old | 43 |
2 files changed, 30 insertions, 43 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 diff --git a/sw/z80/crt0.s.old b/sw/z80/crt0.s.old deleted file mode 100644 index f3bf8e8..0000000 --- a/sw/z80/crt0.s.old +++ /dev/null @@ -1,43 +0,0 @@ - .module crt0 - .globl _main - - .area _HEADER (ABS) -;; reset vector - .org 0x0000 - jp init - - .org 0x0100 - -init: -;; Stack at the top of memory. - ld sp,#0xffff - - ;; initialise global variables - call gsinit - call _main - jp _exit - - ;; Ordering of segments for the linker. - .area _HOME - .area _CODE - .area _GSINIT - .area _GSFINAL - - .area _DATA - .area _BSS - .area _HEAP - - .area _CODE -__clock:: - ret - -_exit:: - ret - - .area _GSINIT - -gsinit:: - -.area _GSFINAL - ret - |