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authorAndreas Baumann <mail@andreasbaumann.cc>2017-06-09 21:40:05 +0200
committerAndreas Baumann <mail@andreasbaumann.cc>2017-06-09 21:40:05 +0200
commit0be74eeee017b7116126e258b97df5a857dac4ab (patch)
tree5f1e1b5ac76e74214abb111ab2a0dac64ef2ecef /src/boot.asm
parent2a83f352967435beb05582e5119b9e9e0cfefe3a (diff)
downloadabaos-0be74eeee017b7116126e258b97df5a857dac4ab.tar.gz
abaos-0be74eeee017b7116126e258b97df5a857dac4ab.tar.bz2
tried to probe disk geometry with mixed success (emulated FDD mode
on USB not working). Code in stage1 gets too complex to fit 512 bytes, so we most likely must load stage2 with a simple algorithm (maybe 8 sectors every bios 13h/2h function is able to deliver). Then we load the kernel in a second, more complex loading step
Diffstat (limited to 'src/boot.asm')
-rw-r--r--src/boot.asm4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/boot.asm b/src/boot.asm
index 3f9c127..88f7404 100644
--- a/src/boot.asm
+++ b/src/boot.asm
@@ -40,6 +40,10 @@
mov si, MESSAGE_LOADING_STAGE_2
call print_string
+; detect disk geometry
+ mov dl, [BOOT_DRIVE]
+ call detect_disk_geometry
+
; load stage 2 and the kernel together to 0x7e00 (directly
; after the boot sector)
mov dl, [BOOT_DRIVE]