From 1dd05ebe61c95985b16d170bf2d3f081a02dfd7d Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Tue, 28 Nov 2017 16:49:24 -0500
Subject: Initial commit

---
 stdio.asm | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 stdio.asm

(limited to 'stdio.asm')

diff --git a/stdio.asm b/stdio.asm
new file mode 100644
index 0000000..e6f7290
--- /dev/null
+++ b/stdio.asm
@@ -0,0 +1,28 @@
+%ifndef _STDIO_ASM
+%define _STDIO_ASM
+
+%include "console.asm"
+
+puts:
+	; Write string buffer at cursor position
+	push bp
+	mov bp, sp
+	pusha
+
+	mov si, [bp + 4]	; address of string buffer
+	mov bx, 0000h		;
+	mov ah, 0eh		; BIOS - teletype
+
+.loop:
+	lodsb			; load byte at [si] into al
+	or al, 0		; 0 | 0 = 0 (detect null terminator)
+	je .end
+	int 10h			; BIOS video service
+	jmp .loop
+.end:
+	popa
+	mov sp, bp
+	pop bp
+	ret
+
+%endif
-- 
cgit