.include "\SrcAll\Header.asm"   ;defines the UserRam label (address 0xA0001000 on N64)
.include "\SrcAll\BasicMacros.asm"
.include "\SrcALL\AdvancedMacros.asm"
.include "\SrcALL\MemoryMap.asm"

CursorX equ 0x100 ;offset from label UserRam, used for tracking where to print to the tv screen
CursorY equ 0x101 ;offset from label UserRam, used for tracking where to print to the tv screen
main:
	;copy the string to ram.
	la $t0,0x00393939	;store 0,0x39,0x39,0x39 ;n64 is big-endian
	la $t1,0x31000000	
	
	la $t2,UserRam
	sw $t0,0($t2)
	nop
	sw $t1,4($t2)
	nop
	
	;string ram now looks like this:
	;	byte 0
	;	byte "9991"
	;	byte 0
	; it was more convenient to store the numeric string little-endian,
        ; the leading terminator lets us easily print it in reverse.
	

	la $t1,UserRam+1	;read past the terminator placed at the front.
	li $t2,0x3A
incStr:
	lbu $t0,($t1)
	beqz $t0,display
	nop
	addiu $t0,1
	bltu $t0,$t2,noCarry
	nop
	;carry it forward
	li $t0,0x30
	sb $t0,($t1)
	addiu $t1,1
	j incStr
	nop
	
noCarry:
	sb $t0,($t1)
	addiu $t1,1
	j incStr
	
display:
	la $t1,UserRam+4
display_loop:
	lbu $t0,($t1)
	beqz $t0,shutdown
	nop
	move $a1,$t0
	jal PrintChar       ;takes $a1 as argument, prints the ascii character in $a1 to the television screen
	nop
	subiu $t1,1
	j display_loop
        nop
shutdown:
	nop                 ;not required on real hardware, but project 64 throws a fit if I don't have this.
	b shutdown
	nop