From 4b5993cfa9da930738c26e61d300b87c996d5f8e Mon Sep 17 00:00:00 2001
From: Ain <41307858+nero@users.noreply.github.com>
Date: Tue, 15 Sep 2020 20:38:34 +0200
Subject: [PATCH] WIP of asm86

---
 com/a86.asm | 40 +++++++++++++++++++++++++++++++++++-----
 1 file changed, 35 insertions(+), 5 deletions(-)

diff --git a/com/a86.asm b/com/a86.asm
index a194729..2c00ad7 100644
--- a/com/a86.asm
+++ b/com/a86.asm
@@ -7,16 +7,23 @@
 
 		mov [fd], ax
 
-loop:		call getc
-		jc end
-		cmp dl, 26
-		je end
+		call getline
+
+		mov dx, [line_length]
+		call dumpdx
+
+		mov si, line_buffer
+		mov cx, [line_length]
 		mov ah, 2
+l03:		lodsb
+		mov dl, al
 		int 0x21
-		jmp loop
+		loop l03
 
 end:		ret
 
+line_num:	dw 1
+
 err:		mov dx, ax
 
 dumpdx:		; setup bx and ah for int 10h call
@@ -53,6 +60,29 @@ getc:		mov dl, 26
 		pop dx
 		ret
 
+getline:	mov word [line_length], 0
+		mov di, line_buffer
+		mov cx, line_buflen
+l02:		push cx
+		call getc
+		pop cx
+		mov al, dl
+		cmp al, 0x0A
+		je l01
+		cmp al, 0x0D
+		je l01
+		cmp al, 0x1A
+		je l01
+		inc word [line_length]
+		loop l02
+
+l01:		ret
+
 infile:		db "com/a86.asm", 0
 
+line_buflen:	equ 0x100
+line_length:	dw 0 ; valid bytes in buffer
+line_prefix:	times 16 db " "
+line_buffer:	times line_buflen db 0
+
 fd:		dw 0