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| author | hpa <hpa> | 2002-11-18 22:22:37 +0000 |
|---|---|---|
| committer | hpa <hpa> | 2002-11-18 22:22:37 +0000 |
| commit | b918509b86a1d65427fe9270886c41b5d0491344 (patch) | |
| tree | e76cb483ca01a5f2a719768983a0ca0195a3df62 /comboot.doc | |
| parent | f3b2b7af08efd9872c973f47410b39de63490230 (diff) | |
| download | syslinux-2.01-pre2.tar.gz | |
Fix the COM32 sample programsyslinux-2.01-pre2
Diffstat (limited to 'comboot.doc')
| -rw-r--r-- | comboot.doc | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/comboot.doc b/comboot.doc index 43c80f99..f7753138 100644 --- a/comboot.doc +++ b/comboot.doc @@ -62,6 +62,9 @@ be possible to create a COM32 execution engine that would run under something like Linux DOSEMU, it is recommended that the code does not assume CPL 0 unless absolutely necessary. +It is highly recommended that every COM32 program begins with the byte +sequence B8 FF 4C CD 21 (mov eax,21cd4cffh) as a magic number. + A COM32 file should have extension ".c32". On startup, CS will be set up as a flat 32-bit code segment, and DS == |