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Any Minimig hacker got time to review a Copper modification?
http://minimig.net/viewtopic.php?f=7&t=616
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Author:  madeho [ Tue Feb 18, 2014 7:59 pm ]
Post subject:  Re: Any Minimig hacker got time to review a Copper modificat

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

Attachments:
Copper.zip [7.01 KiB]
Downloaded 96 times

Author:  NorthWay [ Tue Feb 18, 2014 11:29 pm ]
Post subject:  Re: Any Minimig hacker got time to review a Copper modificat

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.

Author:  NorthWay [ Fri Feb 21, 2014 3:15 am ]
Post subject:  Re: Any Minimig hacker got time to review a Copper modificat

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.

Author:  MMrobinsonb5 [ Fri Feb 21, 2014 11:12 am ]
Post subject:  Re: Any Minimig hacker got time to review a Copper modificat

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.

Author:  madeho [ Fri Feb 21, 2014 7:59 pm ]
Post subject:  Re: Any Minimig hacker got time to review a Copper modificat

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

Author:  NorthWay [ Sun Feb 23, 2014 12:47 am ]
Post subject:  Re: Any Minimig hacker got time to review a Copper modificat

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.

Author:  NorthWay [ Sun Feb 23, 2014 8:56 pm ]
Post subject:  Re: Any Minimig hacker got time to review a Copper modificat

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?

Author:  madeho [ Sun Feb 23, 2014 9:12 pm ]
Post subject:  Re: Any Minimig hacker got time to review a Copper modificat

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

Author:  NorthWay [ Sun Feb 23, 2014 10:03 pm ]
Post subject:  Re: Any Minimig hacker got time to review a Copper modificat

(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.

Attachments:
bliptest.zip [16.87 KiB]
Downloaded 100 times

Author:  MMrobinsonb5 [ Sun Feb 23, 2014 11:53 pm ]
Post subject:  Re: Any Minimig hacker got time to review a Copper modificat

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.

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