Search found 68 matches

by terriblefire
Sat Apr 22, 2017 1:33 am
Forum: Ym rockin'
Topic: Amiga 500 vs Atari STE... I couldnt resist
Replies: 26
Views: 8294

Re: Amiga 500 vs Atari STE... I couldnt resist

I couldn't resist making these computers Duel. ...and I couldn't resist to find and try out this mod file, but ran into some problems. I managed to find that Amiga Cover disk and to extract the mod file from there, but the ProTracker version I found at ftp.funet.fi is not able to load it and throws...
by terriblefire
Fri Apr 21, 2017 11:43 pm
Forum: Ym rockin'
Topic: Amiga 500 vs Atari STE... I couldnt resist
Replies: 26
Views: 8294

Re: Amiga 500 vs Atari STE... I couldnt resist

Yeah it was just synchronized "pressing control".
by terriblefire
Mon Apr 03, 2017 11:41 am
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

Just a quick update here. The TF530 and the TF520 both now boot on the Atari STFM with a 2.06 ROM (TBoard). I havent managed to get the RAM working yet on the TF530 with the Atari BUT i have ported a good chunk of ChuckyTheGang's DiagROM from the Amiga to the ST to help me with Diagnosis ST side. My...
by terriblefire
Sun Apr 02, 2017 3:28 pm
Forum: Ym rockin'
Topic: Amiga 500 vs Atari STE... I couldnt resist
Replies: 26
Views: 8294

Amiga 500 vs Atari STE... I couldnt resist

I couldn't resist making these computers Duel.

https://www.youtube.com/watch?v=Wi_WXIBZFzk

:)
by terriblefire
Mon Feb 27, 2017 11:11 pm
Forum: Hardware
Topic: Available open 68000 cores ?
Replies: 18
Views: 3054

Re: Available open 68000 cores ?

I'd recommend the TG68K model. The MiST and MiniMiG teams are keeping this up to date.

Personally I want a verilog model!!
by terriblefire
Sun Jan 22, 2017 9:30 am
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

I have a T_Board that fits in the 68K socket and gives the original ST a 2.06 ROM.
by terriblefire
Sat Dec 31, 2016 7:58 pm
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

Hi all,

The 030 boards i designed have arrived. I'll try it in the Atari STFM i have later this weekend...

Image
by terriblefire
Thu Dec 22, 2016 9:05 am
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

exxos wrote:
terriblefire wrote:Thanks. I built you a new board this evening. Tested it on an A500+ (because thats what was set up) and i'll post tomorrow. I'll throw in the parts for a breakout board. I dont have time to assemble :)


Awesome thanks, something to fiddle with :cheers:


Let me know how you get on with it:)
by terriblefire
Mon Dec 19, 2016 10:08 pm
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

Thanks. I built you a new board this evening. Tested it on an A500+ (because thats what was set up) and i'll post tomorrow. I'll throw in the parts for a breakout board. I dont have time to assemble :)
by terriblefire
Mon Dec 19, 2016 6:49 pm
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

Send me your address via PM and i'll post one tomorrow.
by terriblefire
Sun Dec 18, 2016 11:00 pm
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

You can run stuff from the cartridge slot, but its limited (IIRC) to 128K and can't run much other than the diagnostics cart itself. There is ultrasatan which is a SD storage device which just plugs in, though if you have problems with the DMA circuit then that may not work either as the DMA does f...
by terriblefire
Sun Dec 18, 2016 10:46 pm
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

Can you benchmark a 020 and 030 at 8mhz then with GB6 ? http://www.exxoshost.co.uk/atari/last/GB6/index.htm Would be interesting if you can test with the caches off aswell.. At the moment the 020 board doesnt work with the floppy drive. Actually it doesnt with the plain 68K either (and i've been il...
by terriblefire
Sun Dec 18, 2016 10:21 pm
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

You can buy the 020 boards (bare) from DirtyPCB at this link http://dirtypcbs.com/store/designer/...sl520-rev3-zip However the 030 boards will also be available in a month or so and they have many more features. I am also now designing an 040 board for the A500 but it has the same level of features ...
by terriblefire
Sun Dec 18, 2016 4:04 pm
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

The revision 3 020 board arrived. I built it and I have now published the sources at

https://github.com/terriblefire/tf520

This includes the fixes I needed for the Atari ST.

Enjoy,
Stephen
by terriblefire
Tue Dec 13, 2016 10:43 pm
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

Quick update. I have finished routing the 030 board. I was slowed down by a chest infection which had me bed ridden for a week. Going to do a few checks then its time to get the rev 1 030 made by dirtypcbs. Board has is an evolution of the 020 board but has the following upgrades... 68030 ... FPU (P...
by terriblefire
Mon Dec 05, 2016 1:35 pm
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

Problem with the grabbers is they're only good for about 3-4 grabs before they stop grabbing and ping off when someone walks. Man, you must be using low quality grabbers. Good ones last last for many years. I break everything. Nothing ever works for me.. My motto is "if it can go wrong it will...
by terriblefire
Sun Dec 04, 2016 9:17 pm
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

EDIT: A full digital trace was not possible. I wasnt going to solder 48 wires onto the MFP. Why you need to solder wires for performing a trace ??? Don't you have grabbers/probes? And I said control lines only, not the data and address buses. Just the full set of the control signals :) Problem with...
by terriblefire
Sun Dec 04, 2016 6:10 pm
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

I've solved the issue.

Problem was my utter incompetence. Rendering a 3 min video of self humiliation right now.

EDIT: A full digital trace was not possible. I wasnt going to solder 48 wires onto the MFP.
by terriblefire
Sun Dec 04, 2016 11:35 am
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

I wonder if you're ending the bus cycle prematurely. As you can see from my screenshot, it takes about 1 µs for the MFP to respond to /IACK by asserting /DTACK. Of course the CPU has to keep /DS low all that time. In your case, I see /DS going up again after maybe 250 ns. Ok thats a line of enquiry...
by terriblefire
Sun Dec 04, 2016 10:37 am
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

terriblefire wrote:Ok.... i have never got on with forums and photos...

https://www.dropbox.com/s/3idyccfvanvfc ... 4.JPG?dl=0

Attached image... Top to Bottom

Channel 1 /IACK
Channel 2 /DTACK
Channel 3 /DS
Channel 4 DE (MFP Pin 20)


Also note that the CPLD cant drive DTACK that high. Its 3.3V.
by terriblefire
Sun Dec 04, 2016 10:27 am
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

Ok.... i have never got on with forums and photos...

https://www.dropbox.com/s/3idyccfvanvfc ... 4.JPG?dl=0

Attached image... Top to Bottom

Channel 1 /IACK
Channel 2 /DTACK
Channel 3 /DS
Channel 4 DE (MFP Pin 20)
by terriblefire
Sun Dec 04, 2016 9:50 am
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

DTACK is an input on my board. :/ I'll try the other board incase there is a silly short or something.
by terriblefire
Sat Dec 03, 2016 11:58 pm
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

The only means i have to post analog traces are in video form.
by terriblefire
Sat Dec 03, 2016 10:56 pm
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

Sorry guys it was mostly for my own records i created the video. I found I3 is held low. I see a ripple on the DTACK at the moment the MFP should be asserting. All other signals *seem* to be as expected. I am really confused why the MFP isnt asserting DTACK. I3 is low and CS is high. I'm going to r...
by terriblefire
Sat Dec 03, 2016 9:21 pm
Forum: Hardware
Topic: Open Source 68K Accelerator Project(s)
Replies: 152
Views: 24031

Re: Open Source 68K Accelerator Project(s)

Sorry guys it was mostly for my own records i created the video.

I found I3 is held low. I see a ripple on the DTACK at the moment the MFP should be asserting. All other signals *seem* to be as expected. I am really confused why the MFP isnt asserting DTACK. I3 is low and CS is high.

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