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-rw-r--r--doc/comboot.txt4
1 files changed, 2 insertions, 2 deletions
diff --git a/doc/comboot.txt b/doc/comboot.txt
index 036bd784..9e9f99a0 100644
--- a/doc/comboot.txt
+++ b/doc/comboot.txt
@@ -832,8 +832,8 @@ AX=0018h [3.30] Query custom font
AX=0019h [3.50] Read disk [SYSLINUX, ISOLINUX, EXTLINUX]
Input: AX 0019h
- EDX Sector number
- ESI Reserved - MUST BE ZERO
+ EDX Sector number (LSW)
+ ESI Sector number (MSW) [4.00]
EDI Reserved - MUST BE ZERO
CX Sector count
ES:BX Buffer address