Re: [hatari-devel] 68030 undocumented instruction |
[ Thread Index |
Date Index
| More lists.tuxfamily.org/hatari-devel Archives
]
- To: hatari-devel@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [hatari-devel] 68030 undocumented instruction
- From: Christian Zietz <czietz@xxxxxxx>
- Date: Sun, 26 Jan 2025 09:37:05 +0100
- Autocrypt: addr=czietz@xxxxxxx; keydata= xsFNBGMHkrYBEACc4fljFVcoEo+DzmhTRd8pOfnj39wkNL+VEIzUpz5OfxFNx/KYWhtHxLN9 VWD3rojS5ww3bNgWiYdqDLisuaO6jLXZ7JNBQU3ruJg+g4iCuwfwFf/tVAHvMCr5U/ibiE94 VZuHs6yYJnXHuKrZEBzWQTEPHltqFLVq+cr4dzMV14SIWP8/OnUCaQeeCE1jdh8itXw75Cv9 Bc4wqhT1eU75WmcUwJ1hNrwZm6M2acFoABmZL0CWm0L8+7PXDgZXlwyNoWuPoupjuAvjsdsY 5x+uWtfyufrC/auTcc7LKiAxRQcZ/ABtLhnAa13Su4BsrVwJIxFIGDrZe/CpX48CvYdWljQF JqElP5ShsaM01odrLhmS8OreMEODo6Vhr3zqs3wUA/bl8gEkxDbSz0LewqC07sajTiYIVABW bVWkyn2T8JANSbtVV9YgUnbK+CsMckruarab1iSrTBB+aTvK5TN7LP4iKHaXfZAbq5wtQfXe yrvyPjkbmzvbYb+lnVe24fqLQS1RVB6p/LGAkKFBT1SjEQWVtzVIiAAlbjhRxIsdOqJK1kl/ 6GyQyGfUlPByUETzzFKe6qcCtQlUZPwd7vquryw+3PSVkhL9PiEtUSMiOIVpRzfomxwKXNGT avDoYjTZL1ROuzQYfL+ekpGu4Ti53GGxagxJT1tBhon1qUkMwwARAQABzSBDaHJpc3RpYW4g WmlldHogPGN6aWV0ekBnbXgubmV0PsLBkQQTAQgAOxYhBElYYBdDcemT9uBa0ocIs0yCexWe BQJjB5K2AhsDBQsJCAcCAiICBhUKCQgLAgQWAgMBAh4HAheAAAoJEIcIs0yCexWer/EP/jwv T/D+JpdNMSEaweIn/pRg/b1LLFvU4VmFbZ9jaWjN4k6rXWc8+04Ee2G5BLV8tluo1YV6veyA Tbi3pWHuDlllAL0be/UbkzSd78Zj5/cDS0LKQxlJPohrdt0teuZxkqLgBiJzeZMybAFATnV9 5ujyQQUM5OysnYK01mmFQabZxGZ25tkK3A8AQ4i9xIwf6q2Ro/ZH5MLZGykOU3TiMj1ErgVu EgYlaBQVNudVWpEgcbPNBtyZsry+y/Pamq29oGwZe3rQ0MIx7lnQIR7JmlxuO8daaxwG74zP DUvHGSlcD6Z8YKiLNVn3P3BVL+zbIOzPD6irN24HwZxWQIpbzDUiEMwM2G/1XpfyEWjF7uV6 TmWCEQfZ7zaIYzGdxeSIuUOpHTMQK8lZJC34Uf9e3xewF1amW5bsp+MFklNHU3spqGt3EBYN DnH+P4b0y1Y+IpaPgqdH6Y6IsrTmmrkvoW8jT+UofUeVpaq0QQv/AilMhioN3kyGXaYB4fXq +HDILo95YWM9byYoho0Lg0/xXmPsmaknk/RJATV7MiPkZ15Og9m6P+dMUIOYXGx4oTCe0Plh Lxdf+eKMbHYloxH/fXVoHcnFIHWuSB1NHQouxayvYiFaVC5KgGfcgE/4qC/obdM6wEtX7RVu CJWmBGim4G2Kv4eQIV8rG2FjBzeNWo1SzsFNBGMHkrYBEACxbxPw+Sr1ufhL/yzMcnH8mith vfUwiviBplRwCA9PfwlBtXrXoMz9Ew767NLX0zAaiXfMumTBwvna9faVxb14tZaetkkf5vDt fmijPaBQoB4PuD9B8XSxFZgTQXL0m0PxxnbQHRXDQM4ACHoXBbNVSKnA/JFFzx8RwpDesV2U w2j4Uch1IgynJWtmYffqFEz3waVIl3luY/VCryO5qeBqc7rC0EgGn0vZBhPhoq5TSVL7F9Q0 xvwhEjAGAoYh0dj692BYmePqDlMr1EY7EQknMQX6M/G0iXT3bT8Y1EmzruG001rMNOnVNxXN AYx5Wtnb7s+qWtcew2AcKtE3qbxSAARWSAPSKoue2ASDkvG6QYH8+MemG2hyjaIcSjAEb485 0ppGurYmQJ8L+lMyt52qGMVAI1I1/290yqaBc8Fg4lAZhM6RsImL4MOIEfyM9xbZ0qlkz4Y4 PGjKUj+BdQXvQbRchVp3nsv2tmT/8w222zOWFeVs7YrjkZs95wDyAwzsDtzA2nDWtga0nXAg 5jHvICXds0iXYisq1H/V9X4pH/BZoi5U3Rrl3NA/tUuGt595bHuuXjXB9yFV4b7plJc4rUBN 1SjrxRNfNns13xUlfANANpK8H4E37vTl9GGi2hnVxv6PwE7hUyn132HhAinRgdFrQZ9Wi3KR J3j2Iti4GQARAQABwsF2BBgBCAAgFiEESVhgF0Nx6ZP24FrShwizTIJ7FZ4FAmMHkrYCGwwA CgkQhwizTIJ7FZ77Wg//S82Zfk5uCQn4vkXyzGW8N+dhSPQe/DBTZF/8sH1yZgphZ4YTTiW6 HwEXVlLmtUtc7ohA++B34wtITlUoQ3lcCvMombbzrq63CzQSN+S2vP5l9XmvrYEAtW7GgovZ wLlsn1DvthxQtGdhmrk1N+LJczBbx9MFZ9Ktll5jeY7qy16v0BfnI7MaTAe9S1WhHhqBYXrb e5rmsHlnnmYMtzpBldXYslXf4f2jR0mg2o0TidEK1deyrhNSttLSEqhPtPJNgNAUletcIeop B9G42Jsk6wyXOQQt3mNBWi9CM2xtDjz5K1ByGlOJGrIzqWYqp3gpva1HpJMLadFNubhQ2zUQ Y3Qcmqt0fFMDS58NsRDrrCdYUS6YDKEMHDAXwJCvPag2hW2XGxqB9FafbJ1dBtdcmEk90YP5 do20uMfdTdJP4zuT/95NqwF7Rknzgl9nlWThv24hXu6VlKnb+0zTa//zJ6qYb69P0zwzFmSV d3KXcncN7uFt6sB3ETNtC0469JjVwF/CTDeFcaebq/u/o8XT/qfpHzd3ngOmf29vuex8ANT2 8b28sB9s1t4XSu55wdlSXv/c7atsjKwzX4OsPlXjHcTIy0Bez6TE7wBUc0qy7qtznqeqx4mW IbDKNNM6RxpFJHBasIpHoPC1BHgSYy8FMHsQIP+LFOxb6pQEdIuaAy8=
- Cc: Toni Wilen <twilen@xxxxxxxxxx>
- Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmx.net; s=s31663417; t=1737880626; x=1738485426; i=czietz@xxxxxxx; bh=aevuzQ3EXBfRl6f0b2dE4fa1i9vCOqgn3FnWdtGtJPc=; h=X-UI-Sender-Class:Message-ID:Date:MIME-Version:Subject:To:Cc: References:From:In-Reply-To:Content-Type: Content-Transfer-Encoding:cc:content-transfer-encoding: content-type:date:from:message-id:mime-version:reply-to:subject: to; b=PF3+ABy/ISBQy3q/LLCQwO/3wdxSQe4Gralw+ptIPldaAi/CzuE0FnCBnzOlGw6Y vsNF0GZ5koC+1gPaZcg9+DQJbWdpRBKAnI+z+YqEDUpTD1eHlolhozTyi6ue57hdI raGAQtls2V7ZQPEkTc2DTaAAYU9WQObNWYukkvMXDB7vTcPhR2uP7LvwTikSYCI5j pNsnlWkDUsS/DmcaU8Pj/igTUk1tKfsFJG4I68a93zT+04MJ2OG9pGnUx07xQIcoE 3n78ko9pXu42iZrKwCqgkUDaS1af6+UO6nyGU20ueaunAYANifvHrK9hcQvssnr4f 2ij6ErKGlCkPssA0Eg==
- Ui-outboundreport: notjunk:1;M01:P0:1YC+67eTLug=;wgrC2m38UatLX+dcxnCZwqBuPJG Nmof7BWeI1XpAqhjWy7aF6v7h0WwAlpBEwG4/jIRWxEP+Tgd8hMUgdrUO/gEqak30pN1JvLQm TD1uVRVeF9b7JLx8GkacIbGnBu6ipKyUQ5yb9W6YBiL8kc4rS4Rg2rX7BWR2v50N+49CjBxKW Z32QrLIX3YUu/A+8BnxofaDBZ9/Uchw+8j80i6wqwAQWS5LXiSi0bs15QDrD5D7u6NhAmSH0G ydt0g9IRhNZrgDJM3EGcIvePrUNqkAWXdyFFH4cXRSuVTg+cGlorQvsTOEfRdvIOZrie0Q9/N zECobPYNcHCwQolc/wnpB8xSId9khhAigx2yoiiO5LrzkRLP08mg90RnulfYazalblieSQji9 tZQX5ROP+ZhCWg9Z6RmWMG+faZRJQTM7YF7ncJgTvZ6ak0ogl4gcGx5Y7RVLqgZL0smsez9yr R59D6m3Nfof35qFZ0ZzSKGkMlXAZHU/H368oyl83Q6nrRFv6JnDeCC+sg+6BTDDhXDwX4AZp8 VO3dJWvkx8rDEJJz8ShyvREkjleuB31zmM+QPQoOInzLZjg6YhDTfms9iPck2N2ejjW0nE0D3 tBEUKkJh25204zH9uNU5pOU5MspkiP0QZ6dXxDx1Me/ZxVGqEmxmhqXvu5Y+vIKctxkCWAu8y w6CQHwNoV94PPrdwNn7E7Cbyh/SDOxUek+gtMLHy9aUb3ut5wold4zaM2KwzRx32gvJcUKu2I 9RrNwO5Okewfd8E4BEwqcVYrHzN7nmKdH5WNiM//26imH+xUGUAWCGGA7Qnr6GUWjKVFquXWO R8UH4rAO4BPptsz/adY1wxUV3OF7ZHmNVKf0xr8oquthYCbcobalmvdLbIkOMtHJIsbBqQ/3Q wIsHOi+i8XYf1qxqxuzPBdWLOIkKjr6Eq+nALSvVOYUMrKlwUwFZPMIvlMs/vnrwvo3M1HjHH QnVUMKWBakiAcddUAhhRSO5QGsxEYX3KOAQdn8hS4aw0Rw7Yo/gxJIV+YyXZddj1+EqZ9C89X ixotCEghd4XEbXrA0fp86XV7scWQRhVQts9mB41AYEm7CNe3cvTMGMBjxxIKKLc4oyg/+tup/ LLmN0mqvBkPujVIdTF04zUxjw18qhYt7jZoZ6FgMqENQg5IOdZWfpe7KykBUrIrBVb4XOypp5 N7nRkBnmDmNzurKIVww6PDz2MgxPcLr++gwW6lOAjjg==
Thomas Huth schrieb:
Am Sat, 25 Jan 2025 23:28:01 +0100
schrieb Adam Klobukowski <adamklobukowski@xxxxxxxxx>:
has been found:
https://www.downtowndougbrown.com/2025/01/the-invalid-68030-instruction-that-accidentally-allowed-the-mac-classic-ii-to-successfully-boot-up/
Thanks for the pointer, that's an interesting article! CC:-ing Toni, maybe
he's interested in having a look for improving the emulation of the CAS
instruction.
Imho, there is a lot of undefined/undocumented behavior, with regards to
the second word of the instruction in the 68030. See, for example, this
thread I stated about a year ago:
https://www.atari-forum.com/viewtopic.php?t=43642. It would be a
herculean task to emulate all reserved bits correctly
Regards
Christian