Search found 78 matches

by apolkosnik
Mon Feb 17, 2020 10:59 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

I was poking around some stuff in Quartus the other day and stepped across this piece of documentation from Intel. I guess it should be relatively easy to add the signals to the core, and perhaps some autoconfig (make it look like a network card) with some allocated memory range, and then it would r...
by apolkosnik
Sat Feb 08, 2020 3:33 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

There seems to be another graphical glitch (I didn't have the time to dig deeper, but I think that could be blitter's fault) that manifests itself in Brian the Lion game. I've posted an issue on github with some screenshots.

https://github.com/MiSTer-devel/Minimig ... /issues/52
by apolkosnik
Mon Feb 03, 2020 9:12 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

Sorgelig wrote:Thanks!
Imported.

Any chance to roll a new release now?
by apolkosnik
Sun Feb 02, 2020 10:31 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

Sorgelig wrote:MiSTer Minimig sources are update with latest TG68K. If there are some changes not merged, then let me know.


https://github.com/mist-devel/minimig-m ... 8bc892615d

This fixes some blitter problems in Brian the Lion.
by apolkosnik
Sat Feb 01, 2020 11:48 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

Kolla, Sorry for a late response, I think that Sonycman's blitter fix and the bus write changes were not merged from the discussion on the MIST topic. I guess some of it got merged i to TG68K.C, but it has not been pulled into the MiSTer core. Regarding original Minimig, have there been any improvem...
by apolkosnik
Mon Jan 27, 2020 1:59 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

Would it be a ton of work to add Action Replay MK3 functionality instead of HRTmon? I am really missing that tool i got in hardware here. Quicksaving to RAM in games would open a kind-of-savestate functionality for hard games. Even saving memory to disk does not work properly here with hrtmon and o...
by apolkosnik
Thu Jan 09, 2020 3:24 am
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

Brian the Lion has a second problem, a visual one this time: https://youtu.be/6T8i5fBVtN8 The issue is in the blitter, line drawing mode. ... But this needs more testing. Nice to hear any advices, as always, guys :) Great job tracking it all down Sonycman! I ran a subset of the known buggy demos an...
by apolkosnik
Thu Dec 19, 2019 12:50 pm
Forum: MiST
Topic: Work on the Minimig core?
Replies: 361
Views: 51767

Re: Work on the Minimig core?

This is turning into some messed up ideological dispute. IMHO the FPGA is about the flexibility and choices we've never had.
How about adding profiles that replicate the known hardware configs, and not limiting the options for people that want options?
by apolkosnik
Fri Dec 13, 2019 2:38 pm
Forum: MiSTer
Topic: Minimig RTG possible?
Replies: 124
Views: 22721

Re: Minimig RTG possible?

DigiPaint, DPaint AGA, Photon Paint, and any other program that relies on the fact that an Amiga screen will never be larger than 2MB in size. This affects scratch pages (screen copies), which can end up overlapping either non-existent or already used memory when not checking boundaries. It would b...
by apolkosnik
Thu Nov 28, 2019 1:13 pm
Forum: MiSTer
Topic: Minimig RTG possible?
Replies: 124
Views: 22721

Re: Minimig RTG possible?

Any volunteers to play with FPGAArcade provided RTG parts?

I've opened an issue tracker for it:
https://github.com/MiSTer-devel/Minimig ... /issues/43
by apolkosnik
Thu Nov 28, 2019 1:09 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

sonycman wrote:What would be the best choice for the Video option: Video area by: Blank or Blank+?

I like the look of Blank+ on 4:3, but it is mighty annoying when watching some demos, when the tiny logo suddenly jumps left or right some pixels because the display mode was changed.
by apolkosnik
Sun Nov 24, 2019 8:34 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

Budbrain megademo still crashes on the TG68K.C (as reported in mist-devel github) , though it runs fine on fx68k. I guess that some timings might be still too tight as Jim Power - Mutant Planet gets in-game background corruption on both TG68K.C and m68k cores(previously m68k was fine, but something ...
by apolkosnik
Sat Nov 23, 2019 3:05 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

Sorgelig wrote:So, basically TG68K.C now is the best one?
It's good that TG68K now is in active development stage!

Pretty much, since Tobilex is working on it, and Mist, and FPGArcade folks seem to have agreed to follow that path.
by apolkosnik
Fri Nov 22, 2019 11:43 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

kolla wrote:And this is cputest of 020 mode, right? :)
Correct, the green means passing, the red indicates failed tests. In some cases the failures are due to wrong exceptions. I've attached the failed tests to the previous post.
by apolkosnik
Fri Nov 22, 2019 11:28 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

Just a quick compare of the results from cputester (ignoring the Flag errors) for the cores
From the left: tg68k from MiSTer, m68k (with addx.b/subx.b fix), TG68K.C (from https://github.com/TobiFlex/TG68K.C)

68020_core_comparison.png
by apolkosnik
Tue Nov 19, 2019 1:32 am
Forum: MiST
Topic: Work on the Minimig core?
Replies: 361
Views: 51767

Re: Work on the Minimig core?

I have implement my first try of the CHK2 and CMP2 Instructions here: https://github.com/TobiFlex/TG68K.C But I need help here. Do these instructions do what they should? Who can write examples or test code? cputester stop with false N- or V- Flag. But this is undefined behavior. @tobiflex, you can...
by apolkosnik
Wed Nov 13, 2019 7:17 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

But I confirmed that the FX68K UNLK A7 behavior is correct. Might be a cputest bug, or might be the data file is corrupt (or a bug on the data test generator)? Toni Wilen (cputest author) confirmed that he has seen the error himself sometimes, and that UNLK might issue a false error report. Accordi...
by apolkosnik
Wed Nov 13, 2019 2:40 am
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

Any possibility updates to MiSTer comes back to MiST ? What updates do you think about? Fast RAM in DDR3, or what? No I guess thats not possible, more like compatibility fixes like Diggers AGA crashes with a white screen etc, plus the new 68K CPU core. This one is using the M68K core. I've tried Di...
by apolkosnik
Wed Nov 13, 2019 1:42 am
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

Diggers AGA seems to crash on the unimplemented CMP2.W instruction in the Introduction part. you can play with M68K implementation in Minimig. it has cmp2 implemented but also has other bugs you can try to fix. Do I just need to uncomment the define in cpu_wrapper to build with M68K for the 68020 m...
by apolkosnik
Wed Nov 13, 2019 1:27 am
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

Any possibility updates to MiSTer comes back to MiST ? What updates do you think about? Fast RAM in DDR3, or what? No I guess thats not possible, more like compatibility fixes like Diggers AGA crashes with a white screen etc, plus the new 68K CPU core. Diggers AGA seems to crash on the unimplemente...
by apolkosnik
Tue Nov 12, 2019 4:52 am
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1273
Views: 268120

Re: Minimig (Amiga) core discussion

I ran cputester against fx68k core, got 3 hits. 2 were from div, which might be still fine since it's only CCR flags, but UNLK instruction looks like it has a real problem.
by apolkosnik
Mon Nov 11, 2019 2:31 am
Forum: MiST
Topic: Work on the Minimig core?
Replies: 361
Views: 51767

Re: Work on the Minimig core?

This fix destory the pack and unpack opcodes. This one also enough for pinball: ELSIF setstate = "10" AND write_back = '1' AND (opcode(15 downto 12)/="0100" or next_micro_state = idle) THEN Will do some more test later to find out the exact instruction, at least we know it's fro...
by apolkosnik
Sun Nov 10, 2019 9:16 pm
Forum: MiST
Topic: Work on the Minimig core?
Replies: 361
Views: 51767

Re: Work on the Minimig core?

Yeah, it looks like the fix is not in, as Pinball Illusions crashes when you load the table with the latest TG68K.C from git (tested on MiSTer) OK, i put it in. Can you test then Pinball again, please? This fix destory the pack and unpack opcodes. I has inserted the TRAPcc opcode in the Core. Now w...
by apolkosnik
Fri Nov 08, 2019 11:16 pm
Forum: MiST
Topic: Work on the Minimig core?
Replies: 361
Views: 51767

Re: Work on the Minimig core?

i also think that for 020 people will want speed over accuracy. I talk for me now, but i prefer a perfect FPGA version of a normal car like Mazda2 rather than a FPGA not accurate version of a Porsche i mean i would prefer a 100% accurate 68020 14 mhz cpu (same ad real A1200) respect to a 100 mhz vi...
by apolkosnik
Thu Nov 07, 2019 12:11 am
Forum: MiST
Topic: Work on the Minimig core?
Replies: 361
Views: 51767

Re: Work on the Minimig core?

I see you commented this: https://github.com/TobiFlex/TG68K.C/blob/master/TG68KdotC_Kernel.vhd#L708 That fixed Pinball Illusions (not sure in what instruction). Yeah, it looks like the fix is not in, as Pinball Illusions crashes when you load the table with the latest TG68K.C from git (tested on Mi...

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