A new generation of PLA for the C64 is now available.

Disk drives, Monitors, SuperCPU etc.
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eslapion
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Re: A new generation of PLA for the C64 is now available.

Post by eslapion » Mon Jun 26, 2017 4:51 am

Oge_user wrote:
Sun Jun 25, 2017 4:19 pm
Gyro Gearloose wrote:
Sun Jun 18, 2017 6:17 pm
I get the feeling the real purpose of making PLA substitutes is to create drama and show off that you have a scope.
I completely agree. PLAnkton just does its job good and costs even less than an used Commodore PLA, which goes for insane price when bought from eBay and - when not bought in New Old Stock condition - cannot be expected to work for long periods of time.

Finding a New Old Stock PLA was something possible some years ago, now it is rare enough that - from my point of view - if you are lucky enough to find one from a ol' man electronic store, then reselling would be an unwise move. I would personally keep the mint PLAs for future preservation and just use a PLAnkton.
Dunno... discovering the intricate details of makes a PLA sub work ok on all versions of the C64 has been a frustrating but truly fantastic adventure.

Jim Drew dared me so I had to get it done and with the help of the posted information of Thomas 'Skoe' Giesel it became a sort of quest that had to be accomplished.

To top it off, Groepaz trolled me for years on various forums about my PROM based solution causing problems which it never did. To add insult to injury, Tynemouth software openly announces exactly how to make such a PROM based solution which does cause the aforementioned problems but of course he and his friends are completely silent about it.

I knew the secret that was missing was in analog details you can't find in the logic equations and Jens Schönfeld had the audacity to say I think too much in analog terms... duh!

PLAnkton is the first PLA substitute to provide everything a C64 needs to work exactly like it has a real PLA. Sure you can have better delays here and there. Sure you can have pin 1 and 19 which are not even used. You can also have a more accurate voltage while genuine Commodore PLAs give you something between 2.5 and 4.4 volts... in the end what matters is you get something that's within functioning tolerances.


Wealth, like happiness, is never attained directly. It comes as a by-product of providing a useful service. -Harland D. Sanders

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eslapion
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Re: A new generation of PLA for the C64 is now available.

Post by eslapion » Wed Jan 10, 2018 3:20 pm

1200 units sold!
Wealth, like happiness, is never attained directly. It comes as a by-product of providing a useful service. -Harland D. Sanders

Nedward
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Re: A new generation of PLA for the C64 is now available.

Post by Nedward » Mon Jan 22, 2018 9:36 am

Id like to grab one of these, PM sent!

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eslapion
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Re: A new generation of PLA for the C64 is now available.

Post by eslapion » Mon Jan 22, 2018 11:06 am

Nedward wrote:
Mon Jan 22, 2018 9:36 am
Id like to grab one of these, PM sent!
PM replied!
Wealth, like happiness, is never attained directly. It comes as a by-product of providing a useful service. -Harland D. Sanders

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Re: A new generation of PLA for the C64 is now available.

Post by Nedward » Mon Feb 19, 2018 12:26 am

Received and installed, works great. Thanks for your hard work.

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