[FORMAT "WCOFF"]			; 生成对象文件的模式
[INSTRSET "i486p"]		; 表示使用486兼容指令集
[BITS 32]							; 生成32位模式机器语言
[FILE "a_nask.nas"]		; 源文件名信息

		GLOBAL	_api_putchar
		GLOBAL	_api_putstr0
		GLOBAL	_api_end
		GLOBAL	_api_openwin
		GLOBAL	_api_putstrwin
		GLOBAL	_api_boxfilwin

[SECTION .text]

_api_putchar:	; void api_putchar(int c);
		MOV		EDX,1
		MOV		AL,[ESP+4]		; c
		INT		0x40
		RET

_api_putstr0:	; void api_putstr0(char *s);
		PUSH	EBX
		MOV		EDX,2
		MOV		EBX,[ESP+8]		; s
		INT		0x40
		POP		EBX
		RET

_api_end: ; void api_end(void); 
		MOV			EDX,4
		INT			0x40

_api_openwin:	; int api_openwin(char *buf, int xsiz, int ysiz, int col_inv, char *title);
		PUSH	EDI
		PUSH	ESI
		PUSH	EBX
		MOV		EDX,5
		MOV		EBX,[ESP+16]	; buf
		MOV		ESI,[ESP+20]	; xsiz
		MOV		EDI,[ESP+24]	; ysiz
		MOV		EAX,[ESP+28]	; col_inv
		MOV		ECX,[ESP+32]	; title
		INT		0x40
		POP		EBX
		POP		ESI
		POP		EDI
		RET

_api_putstrwin:	; void api_putstrwin(int win, int x, int y, int col, int len, char *str);
		PUSH	EDI
		PUSH	ESI
		PUSH	EBP
		PUSH	EBX
		MOV		EDX,6
		MOV		EBX,[ESP+20]	; win
		MOV		ESI,[ESP+24]	; x
		MOV		EDI,[ESP+28]	; y
		MOV		EAX,[ESP+32]	; col
		MOV		ECX,[ESP+36]	; len
		MOV		EBP,[ESP+40]	; str
		INT		0x40
		POP		EBX
		POP		EBP
		POP		ESI
		POP		EDI
		RET

_api_boxfilwin:	; void api_boxfilwin(int win, int x0, int y0, int x1, int y1, int col);
		PUSH	EDI
		PUSH	ESI
		PUSH	EBP
		PUSH	EBX
		MOV		EDX,7
		MOV		EBX,[ESP+20]	; win
		MOV		EAX,[ESP+24]	; x0
		MOV		ECX,[ESP+28]	; y0
		MOV		ESI,[ESP+32]	; x1
		MOV		EDI,[ESP+36]	; y1
		MOV		EBP,[ESP+40]	; col
		INT		0x40
		POP		EBX
		POP		EBP
		POP		ESI
		POP		EDI
		RET