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| author | Sebastian Schmelzer | 2010-10-25 16:53:54 +0200 |
|---|---|---|
| committer | Sebastian Schmelzer | 2010-10-25 16:53:54 +0200 |
| commit | 3050a9253437f4a4b5ad4bf3b3efdc3c660a5137 (patch) | |
| tree | 91ac22153e416aac7ca20916b314b5e2ffa871b1 /contrib/syslinux-4.02/core/plaincon.inc | |
| download | preboot-3050a9253437f4a4b5ad4bf3b3efdc3c660a5137.tar.gz preboot-3050a9253437f4a4b5ad4bf3b3efdc3c660a5137.tar.xz preboot-3050a9253437f4a4b5ad4bf3b3efdc3c660a5137.zip | |
Diffstat (limited to 'contrib/syslinux-4.02/core/plaincon.inc')
| -rw-r--r-- | contrib/syslinux-4.02/core/plaincon.inc | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/core/plaincon.inc b/contrib/syslinux-4.02/core/plaincon.inc new file mode 100644 index 0000000..c41629d --- /dev/null +++ b/contrib/syslinux-4.02/core/plaincon.inc @@ -0,0 +1,24 @@ +; +; writechr: Write a single character in AL to the console without +; mangling any registers; handle video pages correctly. +; + section .text16 + +writechr: + call write_serial ; write to serial port if needed + pushfd + test byte [cs:UsingVGA], 08h + jz .videook + call vgaclearmode +.videook: + test byte [cs:DisplayCon], 01h + jz .nothing + pushad + mov ah,0Eh + mov bl,07h ; attribute + mov bh,[cs:BIOS_page] ; current page + int 10h + popad +.nothing: + popfd + ret |