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| Newsgroups | comp.sys.m68k |
|---|---|
| Date | 2023-07-06 07:37 -0700 |
| References | <u822fk$7396$1@dont-email.me> <0c3f9f5b-e725-4aaf-8655-6cf8ee1a855bn@googlegroups.com> <u84ep4$jjfl$1@dont-email.me> |
| Message-ID | <cdc4b4f0-b67f-471d-a6fe-25e4b2f8b346n@googlegroups.com> (permalink) |
| Subject | Re: Test circuit |
| From | Roger Hanscom <norwestrzh@gmail.com> |
On Wednesday, July 5, 2023 at 12:03:02 PM UTC-7, Luke A. Guest wrote: ...<snip>.... > Can these CPU's handle being slowly clocked so that the LED's can be seen clearly? Do you have a logic probe? That will show you enough to confirm that the CPU is operating as expected. No LEDs needed. > I don't know these books, do you have titles or can you point me to the pdf's if available? Willcox is ISBN 0-13-811399-8. Clements is ISBN 0-13-668120-4. > What would be the best way to determine whether I have the correct speed and it's not a fake one? Start off slow (maybe 5 or 6 MHz) and work our way up in steps to the speed indicated on the chip. Maybe even go beyond that? I find that some Motorola/Coldfire CPUs will run 20% faster than the indicated speed. > I used to have an A1200 with a 68030/882@50MHz and that thing ran HOT when Linux ran on it. At 50 MHz, I'm not surprised!! Where are you located? I have an extra Clements book that I could send to you (as long as it is not too expensive to mail -- I'm retired, and Biden's inflation is killing me!). Roger
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Test circuit "Luke A. Guest" <laguest@archeia.com> - 2023-07-04 22:20 +0100
Re: Test circuit Roger Hanscom <norwestrzh@gmail.com> - 2023-07-05 07:51 -0700
Re: Test circuit "Luke A. Guest" <laguest@archeia.com> - 2023-07-05 20:03 +0100
Re: Test circuit "Marc J." <marc3@retronik.fr> - 2023-07-06 12:09 +0200
Re: Test circuit "Luke A. Guest" <laguest@archeia.com> - 2023-07-06 11:21 +0100
Re: Test circuit Roger Hanscom <norwestrzh@gmail.com> - 2023-07-06 07:37 -0700
Re: Test circuit "Luke A. Guest" <laguest@archeia.com> - 2023-07-06 15:51 +0100
Re: Test circuit R.Kiefer.SPAEM@gmx.de (Ralf Kiefer) - 2023-07-06 16:41 +0200
Re: Test circuit "Luke A. Guest" <laguest@archeia.com> - 2023-07-06 16:13 +0100
Re: Test circuit "marb...@yahoo.co.uk" <marblypup@yahoo.co.uk> - 2023-07-06 07:29 -0700
Re: Test circuit "Luke A. Guest" <laguest@archeia.com> - 2023-07-06 16:18 +0100
Re: Test circuit "marb...@yahoo.co.uk" <marblypup@yahoo.co.uk> - 2023-07-06 10:13 -0700
Re: Test circuit Roger Hanscom <norwestrzh@gmail.com> - 2023-07-06 16:25 -0700
Re: Test circuit "Luke A. Guest" <laguest@archeia.com> - 2023-07-07 08:23 +0100
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