TF CD32 Riser Revision 2 Design Complete

68030 + SDRAM + IDE

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terriblefire
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Re: TF CD32 Riser Revision 2 Design Complete

Post by terriblefire » Fri May 22, 2020 1:00 pm

arkadiusz.makarenko wrote:
Fri May 22, 2020 12:36 pm
terriblefire wrote:
Fri May 22, 2020 10:29 am


I will fire over the CPLD firmware.. Its very basic and just passes PUNT via the CPLD at this stage.
Great.

What cpld do I need 144?
and if you had some time could you tell me what resistors I need to change/fit to get video out working?
CPLD is a XC9572VQ64

All the resistors that are there need to come off and 3 0R resistors need to go on.. i'll post a picture of what to change later.
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arkadiusz.makarenko
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Re: TF CD32 Riser Revision 2 Design Complete

Post by arkadiusz.makarenko » Fri May 22, 2020 9:33 pm

I redone some stuff in amiga.c to make sure we don't miss any depressed keys. Works ok. I haven't noticed any issues on Doom or Pinball Dreams (and Amiga Test Kit)
Need to still test keyboard reset.

PS.
Code is dirty and inefficient, but works.

EDIT.
CPLD in place I even didn't know that I still have 4 spare ...
keyboard reset works ok.

I still haven't managed to crash either cd32 or ARM ... :)
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wairnair
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Re: TF CD32 Riser Revision 2 Design Complete

Post by wairnair » Sat May 23, 2020 7:22 am

Hi guys,

Will this riser support VGA out or "just" DB23?

Thank you

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Re: TF CD32 Riser Revision 2 Design Complete

Post by arkadiusz.makarenko » Sat May 23, 2020 7:35 am

wairnair wrote:
Sat May 23, 2020 7:22 am
Hi guys,

Will this riser support VGA out or "just" DB23?

Thank you
DB23 only.
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Re: TF CD32 Riser Revision 2 Design Complete

Post by terriblefire » Sat May 23, 2020 9:35 am

I was on the fence for the VGA vs DB23 but most people just wanted DB23.

It would be the same thing at a signal level anyway.
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Re: TF CD32 Riser Revision 2 Design Complete

Post by matt020 » Sat May 23, 2020 12:38 pm

By going with DB23, we then have to add a buffered RGB --> VGA adapter anyway.
Could buffers be added and then a VGA 15 pin connector be offered. Would save the need for an additional adapter....

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Re: TF CD32 Riser Revision 2 Design Complete

Post by arkadiusz.makarenko » Sat May 23, 2020 12:40 pm

matt020 wrote:
Sat May 23, 2020 12:38 pm
By going with DB23, we then have to add a buffered RGB --> VGA adapter anyway.
Could buffers be added and then a VGA 15 pin connector be offered. Would save the need for an additional adapter....
It is open source project. Anyone can to modify it, if they wish.
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Re: TF CD32 Riser Revision 2 Design Complete

Post by terriblefire » Sat May 23, 2020 2:43 pm

matt020 wrote:
Sat May 23, 2020 12:38 pm
By going with DB23, we then have to add a buffered RGB --> VGA adapter anyway.
Could buffers be added and then a VGA 15 pin connector be offered. Would save the need for an additional adapter....
Im considering a buffer anyway but i'm not going to do any converters. Too many things already on my plate.
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Re: TF CD32 Riser Revision 2 Design Complete

Post by matt020 » Sat May 23, 2020 5:38 pm

terriblefire wrote:
Sat May 23, 2020 2:43 pm
Im considering a buffer anyway but i'm not going to do any converters. Too many things already on my plate.
Yeah I probably worded that poorly, I meant the buffers and 15 pin connector only...

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Re: TF CD32 Riser Revision 2 Design Complete

Post by terriblefire » Sat May 23, 2020 6:41 pm

I think given that i'm going to pull the video of EXT_A[RGB] it probably wise to buffer. What i'll end up with is buffered DB23 most likely.
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