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Re: TF CD32 Riser Revision 2 Design Complete

Posted: 22 May 2020 13:00
by terriblefire
arkadiusz.makarenko wrote: 22 May 2020 12:36
terriblefire wrote: 22 May 2020 10:29

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.

Re: TF CD32 Riser Revision 2 Design Complete

Posted: 22 May 2020 21:33
by arkadiusz.makarenko
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 ... :)

Re: TF CD32 Riser Revision 2 Design Complete

Posted: 23 May 2020 07:22
by wairnair
Hi guys,

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

Thank you

Re: TF CD32 Riser Revision 2 Design Complete

Posted: 23 May 2020 07:35
by arkadiusz.makarenko
wairnair wrote: 23 May 2020 07:22 Hi guys,

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

Thank you
DB23 only.

Re: TF CD32 Riser Revision 2 Design Complete

Posted: 23 May 2020 09:35
by terriblefire
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.

Re: TF CD32 Riser Revision 2 Design Complete

Posted: 23 May 2020 12:38
by matt020
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....

Re: TF CD32 Riser Revision 2 Design Complete

Posted: 23 May 2020 12:40
by arkadiusz.makarenko
matt020 wrote: 23 May 2020 12:38 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.

Re: TF CD32 Riser Revision 2 Design Complete

Posted: 23 May 2020 14:43
by terriblefire
matt020 wrote: 23 May 2020 12:38 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.

Re: TF CD32 Riser Revision 2 Design Complete

Posted: 23 May 2020 17:38
by matt020
terriblefire wrote: 23 May 2020 14:43 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...

Re: TF CD32 Riser Revision 2 Design Complete

Posted: 23 May 2020 18:41
by terriblefire
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.