diff options
| author | Kartik Agaram <vc@akkartik.com> | 2020-12-23 00:25:33 -0800 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2020-12-23 00:34:46 -0800 |
| commit | e412bf94438dfa8f4d7ea4b5d351e141e7f9fe03 (patch) | |
| tree | bc5d847d159b7590f8dfeba8eecb8a02ed2a98cf | |
| parent | 6a9fff36c40401da840bd98961c144276273f291 (diff) | |
| download | mu-e412bf94438dfa8f4d7ea4b5d351e141e7f9fe03.tar.gz | |
7379
| -rw-r--r-- | apps/boot.hex | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/apps/boot.hex b/apps/boot.hex index bad66d0a..8638fdb5 100644 --- a/apps/boot.hex +++ b/apps/boot.hex @@ -31,7 +31,7 @@ # from some bootable image (see the boot sector marker at the end of this file) # to the address range [0x7c00, 0x7e00) -# 00: +# offset 00 (address 0x7c00): # disable interrupts for this initialization fa # cli @@ -170,16 +170,17 @@ e9 fb ff # loop forever # initialization is done; enable interrupts fb - e9 1d 00 00 00 # jump to 0x7cf0 + e9 2d 00 00 00 # jump to 0x7d00 # padding # d4: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ## 'application' SubX code: print one character to top-left of screen -# f0: +# offset 100 (address 0x7d00): # Entry: # eax <- *0x7e04 # random address in second segment containing 'H' 8b # copy rm32 to r32 @@ -195,7 +196,7 @@ e9 fb ff # loop forever e9 fb ff ff ff # loop forever # padding to 512 bytes -# 101: +# 111: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 @@ -210,7 +211,6 @@ e9 fb ff ff ff # loop forever 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 aa # final 2 bytes: boot sector marker @@ -218,7 +218,7 @@ e9 fb ff ff ff # loop forever ## sector 2 # not loaded on boot; loaded by load_disk -# 200: +# offset 200 (address 0x7e00): 00 00 00 00 48 0f 00 00 00 00 00 00 00 00 00 00 # spot the 'H' with attributes 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |