Super Gold Card (Clone)

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Whopper
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Re: Super Gold Card (Clone)

Postby Whopper » Mon Dec 17, 2018 5:45 pm

Whopper wrote:Tetroxide


Err. . .

That was really meant to be Tetroid! :oops:


You woke me for THAT!!!
tetroid
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Re: Super Gold Card (Clone)

Postby tetroid » Tue Dec 18, 2018 10:47 pm

Whopper wrote:Tetroxide,

Are there any more modern CPLDs / FPGAs that can be used in place of the EP1810?

Having asked that I would like to thank you for all of the, obviously, hard work that you have put in designing and developing your QL accessories. You have produced wonders with very limited resources.

Whopper


For use the modern CPLDs we need to redesigned all SGC.
At first I was hoping to make the map as close as possible to the original.


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Whopper
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Re: Super Gold Card (Clone)

Postby Whopper » Wed Dec 19, 2018 7:17 pm

tetroid wrote:For use the modern CPLDs we need to redesigned all SGC.
At first I was hoping to make the map as close as possible to the original.


Tetroid,

I probably will not understand the answer to this question, but, If the package is the same, and the functionality can be reproduced, why would all of the SGC have to be redesigned?

I'm not moaning, just asking.

Whopper


You woke me for THAT!!!
tetroid
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Re: Super Gold Card (Clone)

Postby tetroid » Thu Dec 20, 2018 5:23 am

Whopper wrote:
tetroid wrote:For use the modern CPLDs we need to redesigned all SGC.
At first I was hoping to make the map as close as possible to the original.


Tetroid,

I probably will not understand the answer to this question, but, If the package is the same, and the functionality can be reproduced, why would all of the SGC have to be redesigned?

I'm not moaning, just asking.

Whopper


More modern CPLD 68pin PLCC have fewer inputs and outputs and cannot be used instead of EP1810 without redesign the board.


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Whopper
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Re: Super Gold Card (Clone)

Postby Whopper » Thu Dec 20, 2018 5:16 pm

Thanks Tetroid.

Whopper


You woke me for THAT!!!
tetroid
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Re: Super Gold Card (Clone)

Postby tetroid » Thu Feb 21, 2019 4:09 pm



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Dave
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Re: Super Gold Card (Clone)

Postby Dave » Thu Feb 21, 2019 8:50 pm

I notice the blue SGC has a slightly different layout to the red and black ones. Is it an earlier or later revision? What caused the change?


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kordics
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Re: Super Gold Card (Clone)

Postby kordics » Thu Feb 21, 2019 9:37 pm

I have just purchased one! :D Now, I have to choose a colour... ;-)


tetroid
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Re: Super Gold Card (Clone)

Postby tetroid » Fri Feb 22, 2019 3:50 am

Dave wrote:I notice the blue SGC has a slightly different layout to the red and black ones. Is it an earlier or later revision? What caused the change?


The blue board - experimental.
The differences:
2 clock : 24 MHz oscillator for floppy disk controller and other - system clock generator. Because of that system and CPU clock may be different from 24 MHz.


tetroid
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Re: Super Gold Card (Clone)

Postby tetroid » Fri Feb 22, 2019 3:50 am

kordics wrote:I have just purchased one! :D Now, I have to choose a colour... ;-)


Thank you.



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