From b5414153c67aa4bb0d0c9c42c7fd2159a64b97f5 Mon Sep 17 00:00:00 2001
From: "E. C. Masloch" <pushbx@ulukai.org>
Date: Tue, 6 Feb 2024 23:27:13 +0100
Subject: [PATCH] boot: display new magic offset (but in decimal)

---
 boot/boot.asm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/boot/boot.asm b/boot/boot.asm
index 1638133..387e28f 100644
--- a/boot/boot.asm
+++ b/boot/boot.asm
@@ -459,7 +459,8 @@ read_next:
                 ;  of the ISFATx defines.
 %endif
 %if ($ - Entry) != LBA_TEST_OFFSET
-    %error Must update constant offset (LBA_TEST_OFFSET) to test dl,dl here and in sys.c for FATFS
+ %assign NEWOFFSET $ - Entry
+ %error Magic offset to LBA detection changed for FATFS, old=LBA_TEST_OFFSET, new=NEWOFFSET
 %endif
                 test    dl,dl                   ; don't use LBA addressing on A:
                 jz      read_normal_BIOS        ; might be a (buggy)