| Re: [hatari-devel] Division overflow handling |
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- To: hatari-devel@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [hatari-devel] Division overflow handling
- From: Uwe Seimet <Uwe.Seimet@xxxxxxxxx>
- Date: Sat, 3 Mar 2018 20:00:32 +0100
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Hi,
Looks as if the core issue of my problem was related to a problem caused
by what must be some kind of memory setup problem when using the
Extended VDI Mode and NVDI. In this case, if I have HDDRIVER.PRG in the
AUTO folder, as soon as I increase the BSS size of HDDRIVER by about 4
KB I get spurious crashes when booting.
I am just mentioning this for the record, I have no means of further
analyzing this.
Best regards
Uwe
> Hi,
>
> I wonder whether the V flag is treated correctly in 68030 mode when there is
> an overflow. This is my code:
>
> move.l #1000000,d2
> divu #10,d2
> bvc.s l1
> move.l #100000,d2
> l1: ...
>
> I don't think this code (bvc) is executed correctly. Unfortunately I have
> problems debugging it, see my previous mail.
>
> Best regards
>
> Uwe
>
>