From bc284c68159a4dcbd791e5dabf40780bfe0df523 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juhani=20Krekel=C3=A4?= <juhani@krekelä.fi>
Date: Sun, 1 Aug 2021 17:02:11 +0300
Subject: [PATCH] =?UTF-8?q?=5F=5F0a9a=20=E2=86=92=20last=5Ffile=5Fbyte?=
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---
 edlin.asm | 34 +++++++++++++++++-----------------
 1 file changed, 17 insertions(+), 17 deletions(-)

diff --git a/edlin.asm b/edlin.asm
index 0c83b5f..f63f60c 100644
--- a/edlin.asm
+++ b/edlin.asm
@@ -254,7 +254,7 @@ initialize_editor: ; 0240
 	; Place ^Z after the end of file in memory
 	mov byte [di], 0x1a ; ^Z
 
-	mov [__0a9a], di
+	mov [last_file_byte], di
 	mov byte [input_buffer.size], input_buffer.bufend - input_buffer.bufstart
 	mov byte [__0c1e.size], 0xff
 	mov byte [__0d48], 0x0a ; magic
@@ -453,7 +453,7 @@ command_a: ; 0370
 	test byte [new_file_flag], 0xff
 	jnz __036d
 
-	mov dx, [__0a9a]
+	mov dx, [last_file_byte]
 	cmp word [__0a80], 0
 	jnz __0388
 
@@ -514,7 +514,7 @@ __03de:
 	pop cx
 	mov word [di], 0x1a ; ^Z
 	subw r_cx, r_di
-	xchg di, [__0a9a]
+	xchg di, [last_file_byte]
 	addw r_di, r_cx
 	sub [psp_fcb_1 + fcb_record_low], di
 	sbb word [psp_fcb_1 + fcb_record_high], 0
@@ -546,7 +546,7 @@ command_w: ; 0417
 	jnz __043b
 
 	mov cx, [__0a94]
-	mov di, [__0a9a]
+	mov di, [last_file_byte]
 	subw r_di, r_cx
 	jna print_eof_str.ret
 
@@ -580,12 +580,12 @@ __043f:
 	movw r_si, r_di
 	mov di, file_buffer
 	mov [__0a92], di
-	mov cx, [__0a9a]
+	mov cx, [last_file_byte]
 	subw r_cx, r_si
 	inc cx
 	rep movsb
 	dec di
-	mov [__0a9a], di
+	mov [last_file_byte], di
 	mov word [current_line], 1
 
 __0474:
@@ -615,7 +615,7 @@ __0482:
 	cmpw r_bx, r_dx
 	je __0474
 __049e:
-	mov cx, [__0a9a]
+	mov cx, [last_file_byte]
 	subw r_cx, r_di
 
 __04a4:
@@ -727,7 +727,7 @@ __0522:
 __0537:
 	mov di, 1 ; magic
 __053a:
-	mov cx, [__0a9a]
+	mov cx, [last_file_byte]
 	subw r_cx, r_si
 	jz print_line.ret
 
@@ -1102,7 +1102,7 @@ __0792:
 	mov [__0a92], si
 	jnz __073e ; disambiguate
 
-	cmp si, [__0a9a]
+	cmp si, [last_file_byte]
 	je __073e
 
 	call __0574
@@ -1138,13 +1138,13 @@ __07d7:
 	movw r_si, r_di
 	addw r_si, r_dx
 	addw r_di, r_cx
-	mov ax, [__0a9a]
+	mov ax, [last_file_byte]
 	subw r_ax, r_dx
 	addw r_ax, r_cx
 	cmp ax, [last_valid_address]
 	jnb oom
 
-	xchg ax, [__0a9a]
+	xchg ax, [last_file_byte]
 	movw r_cx, r_ax
 	subw r_cx, r_si
 	; NOTE: Memmove?
@@ -1188,7 +1188,7 @@ command_i: ; 0816
 
 __082a:
 	call __0482
-	mov cx, [__0a9a]
+	mov cx, [last_file_byte]
 	movw r_si, r_cx
 	subw r_cx, r_di
 	inc cx
@@ -1205,7 +1205,7 @@ __082a:
 __0845:
 	mov [__0a92], di
 	mov [current_line], bx
-	mov [__0a9a], bp
+	mov [last_file_byte], bp
 	call print_line_prefix
 
 	mov dx, __0c1e
@@ -1245,7 +1245,7 @@ __087d:
 	call newline
 
 __088b:
-	mov bp, [__0a9a]
+	mov bp, [last_file_byte]
 	mov di, [__0a92]
 	movw r_si, r_bp
 	inc si
@@ -1253,7 +1253,7 @@ __088b:
 	subw r_cx, r_bp
 	rep movsb
 	dec di
-	mov [__0a9a], di
+	mov [last_file_byte], di
 	jmp editor_mainloop
 
 command_q: ; 08a6
@@ -1287,7 +1287,7 @@ command_e: ; 08cd
 	test byte [new_file_flag], 0xff
 	jz __08c4
 
-	mov dx, [__0a9a]
+	mov dx, [last_file_byte]
 	mov ah, sys_set_dta
 	int 0x21
 
@@ -1388,7 +1388,7 @@ __0a94 resw 1
 last_file_buffer_byte resw 1 ; 0a96
 last_valid_address resw 1 ; 0a98
 
-__0a9a resw 1
+last_file_byte resw 1 ; 0a9a
 
 input_buffer:
 	.size resb 1 ; 0a9c