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Discussing the Open Source FPGA Amiga Project
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 Post subject: Re: Any Minimig hacker got time to review a Copper modificat
PostPosted: Tue Feb 18, 2014 7:59 pm 
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Joined: Fri Jan 20, 2012 9:32 pm
Posts: 55
Hi NorthWay,

Attached is reviewed copper.v file w/ some updates and comments to a code. I don't have Quartus software but I fixed some synthesis issues and warnings. Now your log should looks much better :). Next step from your side shall be functional simulation to see if it behaves as you want.
BTW, verilog is not my 'strong' side in hdl languages I prefer and feel more freely in VHDL

Thx,
madeho


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Copper.zip [7.01 KiB]
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 Post subject: Re: Any Minimig hacker got time to review a Copper modificat
PostPosted: Tue Feb 18, 2014 11:29 pm 
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Joined: Tue Dec 02, 2008 9:42 am
Posts: 42
madeho wrote:
Attached is reviewed copper.v file w/ some updates and comments to a code.

Thanks. I'll look into it soon, probably during the weekend at the latest.

However, a cursory glance says that I shouldn't be setting the state to what it already is? Or was that because you added the latch-twisting thing at the start?
I just tried following the style of logic that the already in place code was doing.


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 Post subject: Re: Any Minimig hacker got time to review a Copper modificat
PostPosted: Fri Feb 21, 2014 3:15 am 
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Joined: Tue Dec 02, 2008 9:42 am
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NorthWay wrote:
Thanks. I'll look into it soon, probably during the weekend at the latest.

I just tried the build I got from Quartus and I see no new bugs from the very small sample of ADFs I have. IK+ has a gfx bug, but that was the same with another standard version I had from before. Battle Squadron highscore/info should be proof enough that the copper is still running.

Interesting. Now I have to sit down and code up a minimal demo that actually uses my Blipper to see if there is anybody in there.


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 Post subject: Re: Any Minimig hacker got time to review a Copper modificat
PostPosted: Fri Feb 21, 2014 11:12 am 
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Joined: Tue Dec 13, 2011 7:48 pm
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NorthWay wrote:
Interesting. Now I have to sit down and code up a minimal demo that actually uses my Blipper to see if there is anybody in there.


Just wanted to say "Nice work!" - always good to see some experimental hackery going on. I'm watching with interest.

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~ Amiga 4000/030 ~ Amiga 1200 030/50MHz ~ Turbo Chameleon 64 ~ Altera DE1 with Minimig core ~
Details of my projects: http://retroramblings.net


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 Post subject: Re: Any Minimig hacker got time to review a Copper modificat
PostPosted: Fri Feb 21, 2014 7:59 pm 
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Joined: Fri Jan 20, 2012 9:32 pm
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Nice to hear that you made test in a HW and it works w/o issues. :) Waiting for more info how a new feature behaves and maybe some video w/ a presentation of new capabilities


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 Post subject: Re: Any Minimig hacker got time to review a Copper modificat
PostPosted: Sun Feb 23, 2014 12:47 am 
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Joined: Tue Dec 02, 2008 9:42 am
Posts: 42
NorthWay wrote:
Now I have to sit down and code up a minimal demo that actually uses my Blipper to see if there is anybody in there.

You know that feeling when you suspect someone doesn't want you to succeed?
Well, I am having that now.

I get WinUAE to crash WINE with my test program (not yet using anything non-original). Upgraded both of them.


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 Post subject: Re: Any Minimig hacker got time to review a Copper modificat
PostPosted: Sun Feb 23, 2014 8:56 pm 
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How do you go about debugging your trainwreck?

I have coded up that minimal demo to search for signs of life, but I see nothing happening that is different to a normal machine.
Tips and techniques for hw debugging?


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 Post subject: Re: Any Minimig hacker got time to review a Copper modificat
PostPosted: Sun Feb 23, 2014 9:12 pm 
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Joined: Fri Jan 20, 2012 9:32 pm
Posts: 55
Hi,

Debug of a hardware is highly dependent from your skills and an equipment you have ....
If you will write a short description what your demo/test do and what are your expectation to see/get it could become possible to make simulation of a blipper and check its functional correctness.

Thx,
madeho


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 Post subject: Re: Any Minimig hacker got time to review a Copper modificat
PostPosted: Sun Feb 23, 2014 10:03 pm 
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Joined: Tue Dec 02, 2008 9:42 am
Posts: 42
(I finally found attachments here. Doh!)

I made a minimal test that basically puts up a black screen, waits for line 171 and starts the blipper.
The bliplist has 1 instruction that is to change the background colour to white (haven't blocked it from doing only blitter stuff).

I was expecting to see the lower half of the screen turn white while the upper was black. Instead it stays black like on any Amiga.
If there is some blinding obvious error somewhere I wouldn't be surprised as I have been taking some time to get the Amiga&68K code flow going.


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bliptest.zip [16.87 KiB]
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 Post subject: Re: Any Minimig hacker got time to review a Copper modificat
PostPosted: Sun Feb 23, 2014 11:53 pm 
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Joined: Tue Dec 13, 2011 7:48 pm
Posts: 341
You mentioned using Quartus earlier - so I'm assuming your target device is Altera-based? If so, explore SignalTap - it's a superb piece of software, and allows you to trace what's going on inside the design with selectable capture triggers.

_________________
~ Amiga 4000/030 ~ Amiga 1200 030/50MHz ~ Turbo Chameleon 64 ~ Altera DE1 with Minimig core ~
Details of my projects: http://retroramblings.net


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