Re: [hatari-devel] FPU detection, who is wrong?

Re: [hatari-devel] FPU detection, who is wrong?

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To: hatari-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [hatari-devel] FPU detection, who is wrong?
From: Miro Kropáček <miro.kropacek@xxxxxxxxx>
Date: Mon, 1 Jun 2015 07:08:27 +0200
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On Tue, Feb 17, 2015 at 7:42 PM, Thomas Huth <th.huth@xxxxxx> wrote:

> Isn't that a memory mapped FPU, accessed at 0xfffa40?

D'oh, you're right ... and with a memory mapped FPU, you likely can not
have stack frames, can you? So there's likely no way to get the
revision number, I guess...

Actually, it's quite easily possible, there's a set of FPU manipulation macros available (http://mikro.naprvyraz.sk/docs/FPU/MACRO881.ZIP), incl. fsave/frestore.

This bug has been fixed in the current FreeMiNT snapshot, not only for FPUs in coprocessor mode but peripheral mode, too.

--

MiKRO / Mystic Bytes
http://mikro.atari.org

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