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authorKartik K. Agaram <vc@akkartik.com>2021-03-15 21:54:58 -0700
committerKartik K. Agaram <vc@akkartik.com>2021-03-15 21:54:58 -0700
commit2f251aec4d4577ba222da170c2d0e9a00724bac7 (patch)
tree0e0837aea4435e3f09d32fbc25adba86c7a792df /boot.subx
parent7119d79b8a9a4023414f7664a011e40fafb44dfd (diff)
downloadmu-2f251aec4d4577ba222da170c2d0e9a00724bac7.tar.gz
undo previous commit
It was just an experiment.
Diffstat (limited to 'boot.subx')
-rw-r--r--boot.subx14
1 files changed, 0 insertions, 14 deletions
diff --git a/boot.subx b/boot.subx
index 7f278c33..412940d6 100644
--- a/boot.subx
+++ b/boot.subx
@@ -109,20 +109,6 @@
   bb/copy-to-bx 0/imm16
   8e/->seg 3/mod/direct 3/rm32/bx 0/r32/es
 
-  # write 1 sector of disk to disk 1
-  b4/copy-to-ah 3/imm8  # write sectors to disk
-  b2/copy-to-dl 0x81/imm8  # disk 1
-  b5/copy-to-ch 0/imm8  # cylinder 0
-  b6/copy-to-dh 0/imm8  # track 0
-  b1/copy-to-cl 1/imm8  # first sector, 1-based
-  b0/copy-to-al 1/imm8  # number of sectors to write
-  # address to read sectors from = es:bx = 0x7c00, contiguous with boot segment
-  bb/copy-to-bx 0/imm16
-  8e/->seg 3/mod/direct 3/rm32/bx 0/r32/es
-  bb/copy-to-bx 0x7c00/imm16
-  cd/syscall 0x13/imm8/bios-disk-services
-  0f 82/jump-if-carry disk_error/disp16
-
   # adjust video mode
   b4/copy-to-ah 0x4f/imm8  # VBE commands
   b0/copy-to-al 2/imm8  # set video mode