MC68060 TT Behaviour

News & updates for the upcoming 68060 accelerator

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bigbloke
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Re: MC68060 TT Behaviour

Post by bigbloke »

Might be worth looking at a small delay in the CLKEN* generation. Page 11-14 of the (NXP) 68060 datasheet has an example if migrating from 68040, and although doesn't explicitly state it, all diagrams show a 5ns delay on the clk divide by 2 to make CLKEN*

Sorry if you already seen/do this. I'm still picking up 68xxxx from when I last touched it in the 90s!
terriblefire
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Re: MC68060 TT Behaviour

Post by terriblefire »

bigbloke wrote: Thu Dec 02, 2021 11:31 am Might be worth looking at a small delay in the CLKEN* generation. Page 11-14 of the (NXP) 68060 datasheet has an example if migrating from 68040, and although doesn't explicitly state it, all diagrams show a 5ns delay on the clk divide by 2 to make CLKEN*

Sorry if you already seen/do this. I'm still picking up 68xxxx from when I last touched it in the 90s!
Yeah i've tried a bunch of delay types. :/
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terriblefire
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Re: MC68060 TT Behaviour

Post by terriblefire »

OK i think something else is happening. Because TT signal was a measurement error.
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Badwolf
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Re: MC68060 TT Behaviour

Post by Badwolf »

terriblefire wrote: Thu Dec 02, 2021 12:50 pm OK i think something else is happening. Because TT signal was a measurement error.
I was going to ask what it looks like without the CLKEN toggle, but it was just a ghost, was it?

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terriblefire
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Re: MC68060 TT Behaviour

Post by terriblefire »

Badwolf wrote: Thu Dec 02, 2021 1:22 pm
terriblefire wrote: Thu Dec 02, 2021 12:50 pm OK i think something else is happening. Because TT signal was a measurement error.
I was going to ask what it looks like without the CLKEN toggle, but it was just a ghost, was it?

BW
Actually wasnt measuring TT... its a quirk of the LA. I'll need to figure out whats really going on
———
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
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