Search found 77 matches

by ex68k
Fri Mar 13, 2020 4:10 pm
Forum: Others
Topic: Dedicated board for Mister
Replies: 1
Views: 969

Re: Dedicated board for Mister

Hi guys. I’m interesting in your project, it’s really cool. I want to popularize and help this great project. Ultimate version - 5CEBA9F23C8N (300k LE, $200) for 32-bit systems Standart Version - 5CEBA5F23C8N (70k LE, $90) for 8 and 16 bit systems Thanks. But there is the problem already. You are b...
by ex68k
Fri Mar 13, 2020 1:00 pm
Forum: MiSTer
Topic: Has anyone looked at porting MiSTer to Zynq?
Replies: 3
Views: 1293

Re: Has anyone looked at porting MiSTer to Zynq?

Hi, I'm an FPGA developer who is predominantly a hardware guy, very little software experience. I've ordered a MiSTer Board, but I'm still waiting for it, but I do have a few Zynq Ultrascale+ Development kits lying around (ZCU702&704). I was wondering if anyone has ported/ tried porting to a Zynq U...
by ex68k
Tue Dec 24, 2019 12:28 pm
Forum: FPGA Chat
Topic: How long will they last?
Replies: 7
Views: 3634

Re: How long will they last?

The lifetime of a semiconductor is usually affected by temperature.... to put it a little differently: as a simple rule, every increase by 10 degrees, halves the lifetime of semiconductors. Your quoted MTBF/FIT rates assume room temperature ( I guess, not knowing where you got them from) So, beware...
by ex68k
Sat Nov 09, 2019 1:58 pm
Forum: MiST
Topic: Work on the Minimig core?
Replies: 634
Views: 87732

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 ex68k
Thu Nov 07, 2019 3:42 pm
Forum: MiST
Topic: Work on the Minimig core?
Replies: 634
Views: 87732

Re: Work on the Minimig core?

I guess, it is best to use TobiFlex's GIT, as it is, where people would look for it.

https://github.com/TobiFlex/TG68K.C

There are to many spin offs already, with different content.

And, probably make a new thread, about the tg68k only?

Cheers
by ex68k
Thu Nov 07, 2019 7:37 am
Forum: MiSTer
Topic: Minimig RTG possible?
Replies: 124
Views: 28361

Re: Minimig RTG possible?

Thanks for sharing the code! Although RTG is nice to have it's something which can be added later. Actually For MiSTer the HDL part probably has to be modified very much or even must be rewritten from scratch by using only registers part. MiSTer doesn't need rendering part as it can be done directl...
by ex68k
Thu Feb 07, 2019 2:07 pm
Forum: MiSTer
Topic: Grant’s multi computer - Need Help
Replies: 12
Views: 6297

Re: Grant’s multi computer - Need Help

djmartins wrote:I have this core working with that demo disk written to the secondary SD card.
Been playing the Colossal Cave 550 point Adventure on that disk.
Could we move it to the MISTer repository?
by ex68k
Thu Feb 07, 2019 2:04 pm
Forum: MiSTer
Topic: PDP-1 core
Replies: 33
Views: 7897

Re: PDP-1 core

bhamadicharef wrote:as the DEC T-11 is used in some arcade early Atari ones, your PDP-1 core will be useful for them.
Thanks!
How? the PDP-1 and the T-11 are not really related?
by ex68k
Thu Jan 24, 2019 1:00 pm
Forum: MiSTer
Topic: Serial console core. Anyone?
Replies: 27
Views: 6853

Re: Serial console core. Anyone?

oldgit wrote:I am running a vt220 core using uart connections.
is it in any git repository?

Cheers!

P.S. Just got mine (the "real thing") back from storage yesterday ;-)
by ex68k
Mon Jan 21, 2019 12:55 pm
Forum: MiSTer
Topic: ao486
Replies: 238
Views: 51162

Re: a0486

Sorgelig wrote:The ao486 core has been written specially with worst CPU implementation. 3D graphics hasn't been included for the same purpose - make users to suffer and cry.
So, did anybody look into the other "open" cores? zet86, v586 or net180?
by ex68k
Wed Jan 16, 2019 1:02 pm
Forum: MiSTer
Topic: 6888x cores
Replies: 10
Views: 2832

Re: 6888x cores

bhamadicharef wrote:Any interest or need to implement the Motorola 6888x floating point coprocessor ?
Brahim @ Singapore
Just go for it, an complete working 68882 would be nice ;-)
by ex68k
Fri Jan 11, 2019 3:17 pm
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 28483

Re: 680x0 cores

MasterOfGizmo wrote: You are basically asking a few guys perfectly restoring some very aged motorcycle how fast it could go if you'd run it on nitro.
I LOVE that one ! :thumbs:
by ex68k
Fri Jan 11, 2019 2:59 pm
Forum: MiSTer
Topic: Minimig RTG possible?
Replies: 124
Views: 28361

Re: Minimig RTG possible?

It's kind of frustrating that pretty much alive Amiga community cannot find self-motivated HDL developer to perfect the Minimig. There are some people working on it, but very slowly, and they got tired of the discussion around it, so they just continue in the dark, before showing anything. It is re...
by ex68k
Fri Jan 11, 2019 2:54 pm
Forum: MiSTer
Topic: Minimig RTG possible?
Replies: 124
Views: 28361

Re: Minimig RTG possible?

I didn't get why DDR3 cannot be used in Amiga memory space. I don't know what's the requirement of video hardware for Picasso96. If it's just plain video buffer mapped at some address space then ist's very easy to implement. If it requires some hardware acceleration like blitter then i need to see ...
by ex68k
Fri Jan 11, 2019 2:52 pm
Forum: MiSTer
Topic: Minimig RTG possible?
Replies: 124
Views: 28361

Re: Minimig RTG possible?

I suppose there is still an aversion to open source work, or concern that somebody will take an open source project and try to commercialize it without contributing (which has happened with earlier versions of Minimig).. Specially, when you get asked for help, getting the commercial version to work...
by ex68k
Wed Jan 09, 2019 12:56 pm
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 28483

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? OK, I'll try again. What you should do: a.) buy a cheap FPGA Eval board. b.) Pu...
by ex68k
Sun Jan 06, 2019 2:37 pm
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 28483

Re: 680x0 cores

Man, you are tempting your luck with that kind of irony and being unfriendly. I suggest you go ask those questions somewhere else. @PurpleMelbourne: there is actually a forum for you, look for the "makers" of the 68080. They will explain to you in great detail, that the "fictional" 68080 is even mo...
by ex68k
Sat Jan 05, 2019 5:35 pm
Forum: MiSTer
Topic: X68000 core
Replies: 122
Views: 41371

Re: X68000 core

Sorgelig wrote:Still cells aren't equal between different manufacturers.
Still more important: what does synthesis & p&r does with them.

So, he should just try to compile it. Then he really knows ...
by ex68k
Sat Dec 29, 2018 6:37 pm
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 28483

Re: 680x0 cores

PurpleMelbourne wrote:If there is a 68000 or 68010 core which is faster than 68080 then I'll be happy to try it
Thought about it again, and don't like the "faster" at all ;-)
Get a correct core with all the original (MMU, FPU) bells & whistles, then we can speed it up.
by ex68k
Sat Dec 29, 2018 2:55 pm
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 28483

Re: 680x0 cores

I think we care here more for accuracy than for speed. They are almost mutually exclusive attributes. Accuracy of existing 68k members first from bottom up ('00, '10, '20, '30, FPU) Speed is second. If you like to have many systems running, accuracy is important, if you like to have just one or two...
by ex68k
Fri Dec 28, 2018 3:06 pm
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 28483

Re: 680x0 cores

PurpleMelbourne wrote:So aside from the Apollo 68080, what is the fastest OpenCore for 68k family?
Clock or Dhrystone? And, '00, '10, '20, '30?
Businterface?

I guess, you have to try it yourself, for the board you have ...
by ex68k
Sun Dec 02, 2018 1:35 pm
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 28483

Re: 680x0 cores

fpgaarcade wrote:This week I hope. I've been running comparisons with the fx68k design when the core is in 68000 mode. There are some minor differences in stackframes I would like to fix, but I think it's good enough.
Still fighting the stackframes? Or did real live get in the way?
;-)
by ex68k
Fri Oct 26, 2018 7:06 pm
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 28483

Re: FX CAST Atari ST core

I've finished adding the missing instructions to my m68k (tg68k) variant. It's still undergoing testing but meetings timing and runs. I'm trying to fix some of the stack frames then I'm done and will switch efforts to the new core. This will go on git shortly. Intersting! Any Idea, when you will pu...
by ex68k
Fri Oct 26, 2018 7:04 pm
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 28483

Re: 680x0 cores

fpgaarcade wrote: I'm also looking at the fast (-2) spartan7 to get decent HDMI speeds out of it, and there is quite a jump between the -1 and -2 speed grades.
/Mike
Just get an Artix, and go DisplayPort ...
by ex68k
Wed Jan 24, 2018 9:18 am
Forum: MiST
Topic: The last MIST
Replies: 136
Views: 62115

Re: The last MIST

It's true, an FPGA board is to some extent independent from its cores. The MiST was developed exclusively for the ST core at first, but like Minimig the core can be ported and thrive in other boards. That said, one needs a motivated core developer to carry the torch. The MIST innovated in many aspe...

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