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- To: hatari-users@xxxxxxxxxxxxxxxxxxx
- Subject: [hatari-users] RESET instruction and MFP
- From: Vincent Rivière <vincent.riviere@xxxxxxxxxxx>
- Date: Wed, 29 Aug 2012 22:26:06 +0200
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Hello.
I use Hatari 1.6.2 on Windows.
Basically, the RESET assembler instruction does not correctly reset the MFP.
Just tested on my real STe:
After a RESET instruction, the MFP IERB (0xfffffa09) is reset to 0.
But with Hatari, the IERB is unchanged after a RESET instruction, and
the MFP interrupts are still enabled. This can lead to wrong behavior in
programs which use the RESET instruction (I hit that with EmuTOS).
I suppose that the situation is the same with the MFP IERA (0xfffffa07).
This looks like a Hatari bug.
--
Vincent Rivière