diff options
Diffstat (limited to 'sw/z80/tests/ram/crt0.s')
| -rw-r--r-- | sw/z80/tests/ram/crt0.s | 41 |
1 files changed, 14 insertions, 27 deletions
diff --git a/sw/z80/tests/ram/crt0.s b/sw/z80/tests/ram/crt0.s index d775e66..b0caa8c 100644 --- a/sw/z80/tests/ram/crt0.s +++ b/sw/z80/tests/ram/crt0.s @@ -1,38 +1,30 @@ .module crt0 - .globl _main - .area _HEADER (ABS) - ;; Reset vector + +;; Reset vectors .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 0x66 - reti + .org 0x38 ; the instruction 0xff (not written) resets to this location + jp init +;; main code .org 0x100 + .globl _main + init: ;; Set stack pointer directly above top of memory. - ld sp,#0xFFFF + ld sp,#0xffff ;; Start of the program call _main jp _exit - ;; Ordering of segments for the linker. +_exit: + halt + jp _exit + +;; Ordering of segments for the linker. .area _HOME .area _CODE .area _INITIALIZER @@ -45,9 +37,4 @@ init: .area _BSS .area _HEAP - .area _CODE - -_exit:: -1$: - halt - jr 1$ + .area _CODE
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