Search found 24 matches

by PurpleMelbourne
Mon Jan 28, 2019 10:40 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1239
Views: 224377

Re: Minimig (Amiga) core discussion

Alynna wrote:This is also so you can use the second RAM channel however you want :)
This is getting exciting. Great news :)
by PurpleMelbourne
Mon Jan 28, 2019 1:06 pm
Forum: MiSTer
Topic: FX CAST Atari ST core
Replies: 284
Views: 100577

Re: FX CAST Atari ST core

I must say that I hesitated to write this, as I do not want to look pushy or anything... Don't ever hesitate to write anything that you mean in good faith :) You didn't sound pushy at all. I have to disagree. Speaking from experience, hesitation is warranted around here! :evil: :( However there is ...
by PurpleMelbourne
Sat Jan 12, 2019 7:20 am
Forum: MiSTer
Topic: Minimig RTG possible?
Replies: 124
Views: 16073

Re: Minimig RTG possible?

If you want to alter PAL or NTSC then that is a special case which MIGHT be alterable by hacking Kickstart. But other than that, all you need to worry about is the bandwidth and if the monitor accepts the resultant frequency. I used to run a variety of monitors using almost full overscan and the mon...
by PurpleMelbourne
Sat Jan 12, 2019 6:17 am
Forum: MiSTer
Topic: Minimig RTG possible?
Replies: 124
Views: 16073

Re: Minimig RTG possible?

Thanks for book! Second link requires registration with credit card - no way i will register such strange site. Yeah sorry about that second link. I just did a quick search to see what I could find. That's why I added the disclaimer that I didn't know what you'd find. You've done a lot of work for ...
by PurpleMelbourne
Fri Jan 11, 2019 3:53 pm
Forum: FPGA Chat
Topic: What does Atari do better than Amiga?
Replies: 18
Views: 5446

Re: What does Atari do better than Amiga?

Wow that is something I never heard about! :o What are the implications from the OS side of things that it cannot interrogate to see what is going one? Does this mean it has to just not do those things, or does it mean that it has to do a "safe process" every time which might take more tim...
by PurpleMelbourne
Fri Jan 11, 2019 3:44 pm
Forum: MiSTer
Topic: Minimig RTG possible?
Replies: 124
Views: 16073

Re: Minimig RTG possible?

It is really funny, how unfriendly the tone in the amiga forums is sometimes. Yeah I noticed that too... Hey Sorgelig, I don't know where it is in the ROM Kernel Reference Manuals, but I do have on hand some good documentation from Davie Haynie's blog. These are the documentation proposal for the A...
by PurpleMelbourne
Thu Jan 10, 2019 5:15 am
Forum: FPGA Chat
Topic: What does Atari do better than Amiga?
Replies: 18
Views: 5446

Re: What does Atari do better than Amiga?

That's interesting. What do you mean by expand the range of Amiga's?
by PurpleMelbourne
Wed Jan 09, 2019 4:50 am
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 19055

Re: 680x0 cores

I'm fairly new to FPGA's so I'd love to learn a bit more. :coffe: :?: When would you choose to use a more expensive FPGA like a Kintex instead of a Spartan, or an Arria instead of a Cyclone if not on the basis of speed? I know with the Arria that you can get lots of built in trancievers so you could...
by PurpleMelbourne
Wed Jan 09, 2019 3:56 am
Forum: FPGA Chat
Topic: What does Atari do better than Amiga?
Replies: 18
Views: 5446

Re: What does Atari do better than Amiga?

So now that we are looking at upgrading the old workhorses with FPGA updates. There are a lot of stuff in the Amiga which would be a great upgrade to Atari. So I've been wondering what in the Atari would be good to upgrade the Amiga with. By the sounds of it Amiga would benefit with Atari blitter up...
by PurpleMelbourne
Tue Jan 08, 2019 6:19 pm
Forum: FPGA Chat
Topic: What does Atari do better than Amiga?
Replies: 18
Views: 5446

Re: What does Atari do better than Amiga?

What about the Atari blitter? I get the impression that its quite fast and used for a lot of things?
by PurpleMelbourne
Tue Jan 08, 2019 8:46 am
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 19055

Re: 680x0 cores

FPGA chips don't really have speeds. [url] https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/cyclone-v/cv_51001.pdf[/url] If you go to page 6 you will see the different speed grades that Intel are prepared to sell you. The Cyclone V comes in speed grades of 6, 7 and 8. I t...
by PurpleMelbourne
Tue Jan 08, 2019 2:43 am
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 19055

Re: 680x0 cores

Perhaps no one can match an Apollo Vampire for speed. But if anyone had a core that did 060 speed then you could hardly complain about it being slow. Maybe not fast enough for some things, but still be really good to be doing that with an FPGA. I've certainly spent a lot more than $35 so far on samp...
by PurpleMelbourne
Sun Jan 06, 2019 1:16 pm
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 19055

Re: 680x0 cores

Thanks for your opinion, but none of that answered any of my questions. So if I add a fictional CPU to an FPGA, what is the fastest fictional CPU that I can use to so that my fictional Amiga will perform faster than if it were to use the other fictional CPU's on the FPGA? :P (Fictional Programmable ...
by PurpleMelbourne
Sun Jan 06, 2019 10:49 am
Forum: MiST
Topic: Combining cores
Replies: 25
Views: 5105

Re: Combining cores

[quote="MasterOfGizmo"]Technically it's usually pretty simple to rearrange existing modules into the 'wrong' machine./quote] I wonder if you could put the big hardware which is too much to emulate. And then could (after some reprogramming) you use MAME on an Amiga which has these extra bit...
by PurpleMelbourne
Sun Jan 06, 2019 10:45 am
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 19055

Re: 680x0 cores

What the Amiga needs is the fastest CPU possible.

So what is the fastest core apart from the 68080?
Does it have a name?

Is the 68060 more cycle accurate than the 68080?
by PurpleMelbourne
Sat Jan 05, 2019 12:10 am
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 19055

Re: 680x0 cores

On Atari ST/STe it's needed for things like overscan and some trickier palette tricks i.e. getting larger resolutions and more colors than HW was originally designed for. These are mostly used in demos (because those techniques have overhead and constraint what rest of code can do), but few games d...
by PurpleMelbourne
Thu Jan 03, 2019 1:05 pm
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 19055

Re: 680x0 cores

I lend the vampire team a complete MIST setup some years ago. They never returned it. Actually they never acknowledged having received it. And after asking them multiple times what happened to the board they told me they would keep it in return for all the work they've done porting the 68080 to the...
by PurpleMelbourne
Thu Jan 03, 2019 12:56 pm
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 19055

Re: 680x0 cores

I've never heard reference to cycle accuracy before. I assumed it was some kind of problem running demos, which I never do. I want brute force speed. However I'm also not wanting to use a PC. By the sounds of it MiniMig is quite limited and unable to use a faster CPU core. 15 years ago I was using a...
by PurpleMelbourne
Sat Dec 29, 2018 11:28 am
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 19055

Re: 680x0 cores

If there is a 68000 or 68010 core which is faster than 68080 then I'll be happy to try it. But of course unless you have a Vampire you can't try the 68080 any way, and so we are left with the question of what is the next fastest? Or what is the fastest which is AVAILABLE? :)
by PurpleMelbourne
Sat Dec 22, 2018 3:40 pm
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 19055

Re: 680x0 cores

So aside from the Apollo 68080, what is the fastest OpenCore for 68k family?

Any estimate on how fast it would run on a Cyclone V?
by PurpleMelbourne
Sat Dec 22, 2018 3:30 pm
Forum: MiST
Topic: Combining cores
Replies: 25
Views: 5105

Re: Combining cores

So what could we do with combining cores?

I'm interested in a turbocharged Amiga like never actually existed. So could better sound be included while maintaining compatibility?
by PurpleMelbourne
Sat Dec 22, 2018 2:02 pm
Forum: FPGA Chat
Topic: What does Atari do better than Amiga?
Replies: 18
Views: 5446

Re: What does Atari do better than Amiga?

Hi again, A friend from my user group and I are putting together an FPGA card/computer. Like the Vampire its a Cyclone V FPGA, but a little bigger. In a sense FPGA's are like hard drives in that they have both speed and capacity considerations. So once booted, an Atari can become a high speed Amiga ...
by PurpleMelbourne
Fri Dec 21, 2018 2:34 am
Forum: FPGA Chat
Topic: What does Atari do better than Amiga?
Replies: 18
Views: 5446

Re: What does Atari do better than Amiga?

Currently the common Operating System is MICROSOFT WINDOWS 10 with both Amiga and Atari being vanquished and forgotten. :cry: The two machines, and 68k-Mac too, are very similar. The main difference is the Amiga is a DMA driven multi processor computer with the CPU just being a director of the orche...
by PurpleMelbourne
Thu Dec 20, 2018 11:53 am
Forum: FPGA Chat
Topic: What does Atari do better than Amiga?
Replies: 18
Views: 5446

What does Atari do better than Amiga?

Hello all, The title is not meant to be flame bait. I'm an Amiga user and believe there are technical differences between the two machines, and in some ways the Atari would be superior. Now we have FPGA accelerator cards, it seems to me the most sensible thing is for a common standard so they can ru...

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