standalone number to ascii converter at this point basically dino.asm

numtoasc.asm

@@ -0,0 +1,90 @@
+SYS_EXIT equ 1
+SYS_READ equ 3
+SYS_WRITE equ 4
+STDIN equ 0
+STDOUT equ 1
+SYS_IOCTL equ 54
+
+section .bss
+	sz RESB 4 ; 4 byte for window size
+	num resb 4 ;4 byte for ascii numbers
+
+section .data
+	ha db 0 ;hundreds
+	ta db 0 ;tens
+
+section .text
+	global _start
+
+_start:
+
+	; print rows
+
+	mov ecx, '7' 		;rows in ecx
+
+hundreds:
+	mov ebx, 100
+	cmp ecx, ebx		;check if above 100
+	js bla
+	jae inchundred		;jump to increment hundreds if needed
+	
+
+bla:
+	mov eax,[ha]		;hundred count to eax
+	add eax, '0'		;convert to ascii
+	mov [num+0], eax	;move to first byte of num string
+
+tens:
+	cmp ecx, 0xa		;check if above 10
+	jge inctens		;jump to increment tens if needed
+	
+	mov eax,[ta]
+	add eax, '0'
+	mov [num+1], eax
+
+	mov eax, ecx
+	add eax, '0'
+	mov [num+2], eax	
+	mov [num+3], byte 0xa 	;linebreak
+
+	mov eax, SYS_WRITE
+	mov ebx, STDOUT
+	mov ecx, num
+	mov edx, 4
+	int 0x80
+
+
+	;print hundreds
+	;mov eax, [ha]
+	;add eax, '0'
+	;mov[ha], eax
+	
+	;mov eax, SYS_WRITE
+	;mov ebx, STDOUT
+	;mov ecx, ha
+	;mov edx, 1
+	;int 0x80	
+
+	; print cols
+
+	;mov eax, SYS_WRITE
+	;mov ebx, STDOUT
+	;mov ecx, sz+2
+	;mov edx, 3
+	;int 0x80
+
+exit:
+	;exit
+	mov eax, 1
+	mov ebx, 0
+	int 0x80
+
+inchundred:
+	inc byte [ha]		;increment hundreds
+	sub ecx, 0x64
+	jmp hundreds
+
+inctens:
+	inc byte [ta]		;increment tens
+	sub ecx, 0xa
+	jmp tens