| vi:filetype=gas68k:
	.text
	.extern main

	.global start
	.global halt_cpu
start:
	jsr disable_intr

	| write SEGA to 0xa14000 to convience the TMSS to run us
	move.l 0x100, %d0
	move.l %d0, 0xa14000

	| copy .data section from ROM to RAM
	move.l #_data_lma, %a0
	move.l #_data_start, %a1
	move.l #_data_end, %a2
	cmp.l %a1, %a2
	beq.s 1f	| skip data copy if the section is empty
0:	move.l (%a0)+, (%a1)+
	cmp.l %a1, %a2
	bne.s 0b
1:

	| zero the .bss section
	move.l #_bss_start, %a0
	move.l #_bss_end, %a1
	cmp.l %a0, %a1
	beq.s 1f	| skip bss zeroing if the section is empty
0:	clr.l (%a0)+
	cmp.l %a0, %a1
	bne.s 0b
1:

	| setup the stack pointer stack
	move.l #_stacktop, %sp
	| now that we have a stack, we can enable interrupts
	jsr enable_intr

	jsr main
halt_cpu:
	stop #0x2700