Re: [hatari-devel] 68060 unimplemented opcodes?

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To: Hatari Development <hatari-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [hatari-devel] 68060 unimplemented opcodes?
From: Toni Wilen <twilen@xxxxxxxxxx>
Date: Wed, 13 Mar 2024 08:04:59 +0000
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Thread-topic: [hatari-devel] 68060 unimplemented opcodes?

>DEBUG: 68060 unimplemented opcode 4C00, PC=00045fd4 SP=00367ef4

This is MULL.L (32x32->64bit multiplication) which is not implemented in real 68060 (This is not the only instruction that 68060 dropped). UAE core has config option to emulate real 68060 behavior (generate unimplemented instruction exception that Motorola FPSP handles normally) or emulate it like CPU has it implemented in hardware.

Follow-Ups:
- Re: [hatari-devel] 68060 unimplemented opcodes?
  - From: Eero Tamminen

References:
- [hatari-devel] 68060 unimplemented opcodes?
  - From: Eero Tamminen

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