Path: ...!weretis.net!feeder9.news.weretis.net!news.quux.org!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: Al Kossow Newsgroups: comp.arch Subject: Re: control co-processor Date: Mon, 5 May 2025 03:01:12 -0700 Organization: A noiseless patient Spider Lines: 7 Message-ID: References: <2025Apr21.080532@mips.complang.tuwien.ac.at> <2025Apr22.071010@mips.complang.tuwien.ac.at> <2025Apr22.193103@mips.complang.tuwien.ac.at> <2025Apr23.194456@mips.complang.tuwien.ac.at> <126700f99b6f97d7483bb5355d68c361@www.novabbs.org> <0b410ad93124778a2b1b3ab8fb6ec62c@www.novabbs.org> <54dcb50f7a378240447d3565f083f0bc@www.novabbs.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Mon, 05 May 2025 12:01:13 +0200 (CEST) Injection-Info: dont-email.me; posting-host="85effb43326f973a01a23e99a94b5e87"; logging-data="242580"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/swOd9qYWDGwp9m7CL8qwM" User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 Cancel-Lock: sha1:rHzSWo5wREwSThP7GZghUXjm5/g= Content-Language: en-US In-Reply-To: Bytes: 2147 On 5/4/25 9:40 PM, Robert Finch wrote: > The CPU books I have do not cover a test/debug interface for the processor, so I am winging it a bit. The ones I have seen are based on scan chains, going back to the "muffler" in the Xerox Dorado