the patch is in attach file
to apply use "*patch src/farptr.h < farptr.patch*" from seabios directory
This will fix the problem of calling bios service int 0x13 AH=0x42 when the
drive is a ATAPI
(because Outs should use DS:SI and not ES:DI)
This bug affect all Outs() when called from real mode 16bits !
i save DS and restore it after, because Seabios use it
diff --git a/src/farptr.h b/src/farptr.h
index 0a4db68b..4fbe66c3 100644
--- a/src/farptr.h
+++ b/src/farptr.h
@@ -161,16 +161,22 @@ static inline void insl_fl(u16 port, void *ptr_fl, u16 count) {
insl(port, (u32*)FLATPTR_TO_OFFSET(ptr_fl), count);
}
static inline void outsb_fl(u16 port, void *ptr_fl, u16 count) {
- SET_SEG(ES, FLATPTR_TO_SEG(ptr_fl));
+ u16 ds = GET_SEG(DS);
+ SET_SEG(DS, FLATPTR_TO_SEG(ptr_fl));
outsb(port, (u8*)FLATPTR_TO_OFFSET(ptr_fl), count);
+ SET_SEG(DS, ds);
}
static inline void outsw_fl(u16 port, void *ptr_fl, u16 count) {
- SET_SEG(ES, FLATPTR_TO_SEG(ptr_fl));
+ u16 ds = GET_SEG(DS);
+ SET_SEG(DS, FLATPTR_TO_SEG(ptr_fl));
outsw(port, (u16*)FLATPTR_TO_OFFSET(ptr_fl), count);
+ SET_SEG(DS, ds);
}
static inline void outsl_fl(u16 port, void *ptr_fl, u16 count) {
- SET_SEG(ES, FLATPTR_TO_SEG(ptr_fl));
+ u16 ds = GET_SEG(DS);
+ SET_SEG(DS, FLATPTR_TO_SEG(ptr_fl));
outsl(port, (u32*)FLATPTR_TO_OFFSET(ptr_fl), count);
+ SET_SEG(DS, ds);
}
#else
_______________________________________________
SeaBIOS mailing list -- [email protected]
To unsubscribe send an email to [email protected]
