From 4aedeff717c95153feb62d7ac899fe1eefc62adc Mon Sep 17 00:00:00 2001
From: Jeremy Soller <jackpot51@gmail.com>
Date: Fri, 30 Sep 2016 09:41:17 -0600
Subject: [PATCH] Bootloader debug - use max sector read of 128 sectors
---
x86_64/bootsector.asm | 60 +++++++++++++++++++--------------------
x86_64/startup-common.asm | 2 +-
2 files changed, 31 insertions(+), 31 deletions(-)
diff --git a/x86_64/bootsector.asm b/x86_64/bootsector.asm
index 43360ba..86032ab 100644
--- a/x86_64/bootsector.asm
+++ b/x86_64/bootsector.asm
@@ -45,16 +45,16 @@ boot: ; dl comes with disk
; TODO rewrite to (eventually) move larger parts at once
; if that is done increase buffer_size_sectors in startup-common to that (max 0x80000 - startup_end)
load:
- cmp cx, 64
+ cmp cx, 128
jbe .good_size
pusha
- mov cx, 64
+ mov cx, 128
call load
popa
- add ax, 64
- add dx, 64 * 512 / 16
- sub cx, 64
+ add ax, 128
+ add dx, 128 * 512 / 16
+ sub cx, 128
jmp load
.good_size:
@@ -63,31 +63,31 @@ load:
mov [DAPACK.count], cx
mov [DAPACK.seg], dx
- ; mov bx, [DAPACK.addr + 2]
- ; call print_num
- ;
- ; mov bx, [DAPACK.addr]
- ; call print_num
- ;
- ; mov al, '#'
- ; call print_char
- ;
- ; mov bx, [DAPACK.count]
- ; call print_num
- ;
- ; mov al, ' '
- ; call print_char
- ;
- ; mov bx, [DAPACK.seg]
- ; call print_num
- ;
- ; mov al, ':'
- ; call print_char
- ;
- ; mov bx, [DAPACK.buf]
- ; call print_num
- ;
- ; call print_line
+ mov bx, [DAPACK.addr + 2]
+ call print_num
+
+ mov bx, [DAPACK.addr]
+ call print_num
+
+ mov al, '#'
+ call print_char
+
+ mov bx, [DAPACK.count]
+ call print_num
+
+ mov al, ' '
+ call print_char
+
+ mov bx, [DAPACK.seg]
+ call print_num
+
+ mov al, ':'
+ call print_char
+
+ mov bx, [DAPACK.buf]
+ call print_num
+
+ call print_line
mov dl, [disk]
mov si, DAPACK
diff --git a/x86_64/startup-common.asm b/x86_64/startup-common.asm
index 51da486..518410d 100644
--- a/x86_64/startup-common.asm
+++ b/x86_64/startup-common.asm
@@ -14,7 +14,7 @@ startup:
; buffersize in multiple of sectors (512 Bytes)
; min 1
; max (0x70000 - startup_end) / 512
-buffer_size_sectors equ 64
+buffer_size_sectors equ 128
; buffer size in Bytes
buffer_size_bytes equ buffer_size_sectors * 512
--
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