From 5a24ceb9b85b4071bcd2a4e9dc31a44eb6094e57 Mon Sep 17 00:00:00 2001
From: Nero <41307858+nero@users.noreply.github.com>
Date: Sat, 28 Mar 2020 17:36:52 +0000
Subject: [PATCH] Implement cluster chaining for FAT

---
 fat32.asm | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/fat32.asm b/fat32.asm
index 8ca23b8..78e9ca7 100644
--- a/fat32.asm
+++ b/fat32.asm
@@ -172,11 +172,22 @@ floop:  add ax, [sf]
 	cmp cl, [sc]
 	jne err
 
+	xchg bx, cx
+	mov cl, 5
+	sal bx, cl
+	add [dest], bx
+
 	add sp, 12
 	ret
 
-main:	call readc
+loadf:	call readc
+	call next
+	cmp word [clus+2], 0x0FFF
+	jne loadf
+	ret
 
+main:	call loadf
+	mov ax, [dest]
 	int 3
 
 	xor ah,ah
@@ -187,12 +198,13 @@ main:	call readc
 	; the packing is so that it looks nice in a hexdump
 	times (0x1E0 - ($-$$)) db 0
 	; directory the kernel is in
-tdir:	db "RDOS       "
+tdir:	db "RDOS       ", 0
 	; current cluster number
 clus:	dd 2
+
 	times (0x1F0 - ($-$$)) db 0
-	; filename for hte kernel
-tfile:	db "KERNEL  BS "
+	; filename for the kernel
+tfile:	db "KERNEL  BS ", 0
 	; segment register for data
 dest:	dw 0x07c0