diff options
| author | hpa <hpa> | 2002-06-16 06:30:28 +0000 |
|---|---|---|
| committer | hpa <hpa> | 2002-06-16 06:30:28 +0000 |
| commit | 2a8107a220e75a83bd030ba03c92906ac0dd72e0 (patch) | |
| tree | 1e93c76d6b7887ed2679a452d546eaf8c035b09b /comboot.doc | |
| parent | 172f1e3aae1ce8848ad4bb9574d1837d75b67ff5 (diff) | |
| download | syslinux-2a8107a220e75a83bd030ba03c92906ac0dd72e0.tar.gz | |
Document new "write serial port" syscall
Diffstat (limited to 'comboot.doc')
| -rw-r--r-- | comboot.doc | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/comboot.doc b/comboot.doc index c5e76ad2..668a4093 100644 --- a/comboot.doc +++ b/comboot.doc @@ -151,7 +151,13 @@ INT 21h AH=01h Get Key with Echo INT 21h AH=02h Write Character - Writes a character in DL to the console output. + Writes a character in DL to the console (video and serial) + output. + +INT 21h AH=04h Write Character to Serial Port + + Writes a character in DL to the serial console output + (if enabled) only. INT 21h AH=08h Get Key without Echo @@ -307,3 +313,4 @@ AX=0009h Call PXE Stack [PXELINUX ONLY] Invoke an arbitrary PXE stack function. On SYSLINUX/ISOLINUX, this function returns with an error (CF=1) and no action is taken. + |