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Discussing the Open Source FPGA Amiga Project
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 Post subject: Compile PIC?
PostPosted: Tue Jun 19, 2012 1:32 pm 
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Joined: Fri Dec 09, 2011 11:31 am
Posts: 91
Is here somewhere readme how to compile the PIC firmware?
I would like to cancel the automatic start Amiga, because every test I have to wait until AOS starts.


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 Post subject: Re: Compile PIC?
PostPosted: Tue Jun 19, 2012 3:54 pm 
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Joined: Mon Dec 01, 2008 9:58 pm
Posts: 1568
Location: .de
What do you mean by "until AmigaOS starts"?
Actually PIC only load the FPGA firmware and after that the 68k bootloader loads the Kickstart ROM into RAM.

If you use another FPGA core, only this one will be load.
Also an adapted Minimig/Amiga chipset core could stop loading the ROM image.

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 Post subject: Re: Compile PIC?
PostPosted: Tue Jun 19, 2012 5:17 pm 
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Joined: Fri Dec 09, 2011 11:31 am
Posts: 91
My English is tragic :)

Now:
1) PIC loads the FPGA core "minimig1"
2) 68k loads the ROM
3) I open the OSD menu and I will load alternative the kernel
4) PIC loads the kernel
5) I can test

I want to:
1) I open the OSD menu and I will load alternative the kernel (or if I want minimig1)
2) PIC loads the kernel
3) I can test (or play on the Amiga)


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 Post subject: Re: Compile PIC?
PostPosted: Tue Jun 19, 2012 5:26 pm 
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Joined: Mon Dec 01, 2008 9:58 pm
Posts: 1568
Location: .de
OK now I understand :)

Problem is: OSD is part of the Amiga chipset core and only appear after ROM is loaded.

Best way is to rename the alternative core into "minimig1.bin". Then PIC will directly load this one, but there will be no OSD to reload any other.

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 Post subject: Re: Compile PIC?
PostPosted: Tue Jun 19, 2012 10:59 pm 
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Joined: Fri Dec 09, 2011 11:31 am
Posts: 91
Thanks for the reply.
I thought that the OSD is part of the PIC.


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 Post subject: Re: Compile PIC?
PostPosted: Wed Jun 20, 2012 12:16 am 
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Joined: Tue Dec 13, 2011 7:48 pm
Posts: 341
minimig_emu wrote:
Thanks for the reply.
I thought that the OSD is part of the PIC.


The PIC handles navigation of the OSD menu, but without the Minimig core nothing will be displayed.

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