Forgottenmyname - Progress - Part 2

Where Alpha builders can post pics and progress etc
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PhilC
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Re: Forgottenmyname - Progress - Part 2

Post by PhilC »

All the clocks are correct and I have had it boot a grand total of once, lol.

The 8mhz clocks look a little ropey though, what do you think?
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PhilC
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Re: Forgottenmyname - Progress - Part 2

Post by PhilC »

I'm also guessing all clocks on the MMU should be doubled?
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Re: Forgottenmyname - Progress - Part 2

Post by PhilC »

One 84pf cap on the 8mhz and a 47pf on the 2mhz and now I get 20 bombs nearly every time it powers up, which I THINK is progress, LOL.

The 2mhz and 8mhz do look much better but still a bit ropey though.
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Re: Forgottenmyname - Progress - Part 2

Post by PhilC »

Oh and now my Alpha is getting creative. Are those bombs wearing berets? And the two red ones? Not a clue.
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Re: Forgottenmyname - Progress - Part 2

Post by exxos »

You have followed my guide exactly ? including resistors used exactly etc ?
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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Re: Forgottenmyname - Progress - Part 2

Post by PhilC »

exxos wrote: Mon Jul 01, 2019 11:34 am You have followed my guide exactly ? including resistors used exactly etc ?
Yes, exactly as you said.
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Re: Forgottenmyname - Progress - Part 2

Post by exxos »

Is your RAM 120ns or faster ?
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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Re: Forgottenmyname - Progress - Part 2

Post by PhilC »

They are all 120s appart from one chipwhich is an 80, so might be my ram as I do get black screen white border quite often.
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Re: Forgottenmyname - Progress - Part 2

Post by exxos »

May be a idea to post some image of your install so we can see if anything looks wrong anywhere...
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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People should find solutions to problems, not find problems with solutions.
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Re: Forgottenmyname - Progress - Part 2

Post by PhilC »

Ok, here's some images
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