Well your the only one who'll let me lose on their forum.... mwhaahahahhaha,,,
Can all registered uses please login, even just for a few minutes..
It helps build a picture where our "good traffic" is coming from..
Thanks :)
It helps build a picture where our "good traffic" is coming from..
Thanks :)
REV 3 - REV 5 - The beginning (ST536)
-
terriblefire
- Admin sponsor
- Posts: 5687
- Joined: Mon Aug 28, 2017 10:56 pm
- Location: Glasgow, UK
Re: REV 3 - The beginning
———
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
Re: REV 3 - The beginning
Great work @exxos
Nice!
Nice!
Re: REV 3 - The beginning
DFB1 Open source 50MHz 030 and TT-RAM accelerator for the Falcon
Smalliermouse ST-optimised USB mouse adapter based on SmallyMouse2
FrontBench The Frontier: Elite 2 intro as a benchmark
Smalliermouse ST-optimised USB mouse adapter based on SmallyMouse2
FrontBench The Frontier: Elite 2 intro as a benchmark
Re: REV 3 - The beginning
It looks like something really starts to struggle over 61Mhz. I have disabled the SDRAM as well.. I think it could just be the bus isolators.. I mean they take 20ns to disable... along with the ROM it is mostly moaning the ROM is having problems being accessed, and I have slowed its access right down as well. I put the plastic package one in which otherwise is working fine at 50 MHz, that one does not even boot up, so I assume it is the CPU actually tripping up and nothing else.
I am going to put a faster buffer on the next revision of the board. It is hard to find one that JLC stock , which are actually faster as well.
I am going to put a faster buffer on the next revision of the board. It is hard to find one that JLC stock , which are actually faster as well.
-
terriblefire
- Admin sponsor
- Posts: 5687
- Joined: Mon Aug 28, 2017 10:56 pm
- Location: Glasgow, UK
Re: REV 3 - The beginning
Yeah i never got 030s past 56-57Mhz without parts of them stopping to work. Think there is a fundamental limit somewhere there.
S
S
———
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
Re: REV 3 - The beginning
In terms of long-term stability 50Mhz seems to be about as high as you could really go anyway. I have ordered a couple of supposed different mask EC's to see if they are any different.terriblefire wrote: Thu Apr 08, 2021 1:01 pm Yeah i never got 030s past 56-57Mhz without parts of them stopping to work. Think there is a fundamental limit somewhere there.
Re: REV 3 - The beginning
Been busy rerouting the buffer isolator chips... It went from two chips to one chip, the fastest one I can really find is a ABT version. About 7ns isolation time, the old ones were about 20ns.
- Capture.PNG (86.71 KiB) Viewed 3164 times
Re: REV 3 - The beginning
Feking Eagle libs 
- Capture.PNG (72.89 KiB) Viewed 3145 times
Re: REV 3 - The beginning
Some time later... hope it fits this time...
EDIT:
Yep!
- Capture.PNG (95.67 KiB) Viewed 3131 times
EDIT:
Yep!
- Capture.PNG (60.36 KiB) Viewed 3124 times
Re: REV 3 - The beginning
The board was running most of yesterday at 50MHz on my H4...
The results I was keeping a eye on.. The GEM dialog box ( actually that should probably be spelt dialogue ?
) It was interesting because in the morning the test was 300%.. And during the day when it all heated up in my room picked actually dropped to 299%.. And around midnight when it had dropped in temperature it went back up to 300% again! just goes to show how very small tolerances in hardware can affect things.
- IMG_6402.JPG (216.88 KiB) Viewed 3104 times
The results I was keeping a eye on.. The GEM dialog box ( actually that should probably be spelt dialogue ?
) It was interesting because in the morning the test was 300%.. And during the day when it all heated up in my room picked actually dropped to 299%.. And around midnight when it had dropped in temperature it went back up to 300% again! just goes to show how very small tolerances in hardware can affect things.- IMG_6403.JPG (283.54 KiB) Viewed 3104 times