From 32c09027423f61c305e2423e52f5f69ecad8e2c0 Mon Sep 17 00:00:00 2001 From: Martin Str|mberg Date: Sun, 26 Mar 2017 07:32:11 -0400 Subject: [PATCH] mbr/isohdpfx.S: correct stack for heads/sectors; revert Heads and sectors were pushed in reverse order per isolinux.asm bb519a95 reversed the order of heads/sectors on the stack Signed-off-by: Gene Cumm --- mbr/isohdpfx.S | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/mbr/isohdpfx.S b/mbr/isohdpfx.S index 17e1efe1..f9e96919 100644 --- a/mbr/isohdpfx.S +++ b/mbr/isohdpfx.S @@ -175,12 +175,12 @@ next: /* Get (C)HS geometry */ movb $0x08, %ah int $0x13 - andw $0x3f, %cx /* Sector count */ popw %bx /* EBIOS flag */ - pushw %cx /* -16: Save sectors on the stack */ movzbw %dh, %ax /* dh = max head */ incw %ax /* From 0-based max to count */ - pushw %ax /* -18: Save heads on the stack */ + pushw %ax /* -16: Save heads on the stack */ + andw $0x3f, %cx /* Sector count */ + pushw %cx /* -18: Save sectors on the stack */ mulw %cx /* Heads*sectors -> sectors per cylinder */ pushw %bx /* -20: EBIOS flag */ -- 2.11.4.GIT