Search found 10 matches

by wietze
Sun Oct 06, 2019 4:11 pm
Forum: NEWS & ANNOUNCEMENTS
Topic: MONGREL REMAKE H4 PRE-ORDER
Replies: 38
Views: 2378

Re: MONGREL REMAKE H4 PRE-ORDER

I ordered the board, I was wondering, if I could add some assorted bits and pieces required to assemble this. I have of course some boards to donor parts; but I suppose there is a part list of common stuff? I heard from Troed that exxos provided a bunch of parts for the first board; will this be the...
by wietze
Fri Jul 12, 2019 7:06 pm
Forum: MONGREL H4 USER BUILDS
Topic: REV H1 information and interest
Replies: 76
Views: 6162

Re: REV H1 information and interest

Please note me down for 1 board. This will keep me busy during the non-demo-coding days :)
by wietze
Wed Jul 10, 2019 9:06 pm
Forum: HARDWARE ISSUES
Topic: Low Performance Falcon
Replies: 13
Views: 1014

Re: Low Performance Falcon

Ok, today we ran some more tests. Benchmark results are the same results when testing with icache on/off. This confirms the story of Daniel. I've checked the cpu speed; in both 8mhz and 16mhz modes, and indeed the results are different from each mode; this in order to validate that I ran my initial ...
by wietze
Tue Jul 09, 2019 10:29 pm
Forum: HARDWARE ISSUES
Topic: Low Performance Falcon
Replies: 13
Views: 1014

Re: Low Performance Falcon

Datacache doesn't have much impact in GB6 results. Instruction cache gives about 25% boost. So I think your caches are fine. You need to scope the CPU clock and see if its running at 8MHz. Well. I got 2 programs, one that runs a loop from icache; and does the same from ram. And they take exactly th...
by wietze
Tue Jul 09, 2019 9:10 pm
Forum: HARDWARE ISSUES
Topic: Low Performance Falcon
Replies: 13
Views: 1014

Re: Low Performance Falcon

Some further research turns out that hte machine performs the same performance wise with cache frozen and disabled for a series of dbra loops. So perhaps its a cache issue (that its being grounded for example).

I need to find out which pin of the cpu this is.
by wietze
Tue Jul 09, 2019 6:58 pm
Forum: HARDWARE ISSUES
Topic: Low Performance Falcon
Replies: 13
Views: 1014

Re: Low Performance Falcon

exxos wrote:
Tue Jul 09, 2019 10:41 am
No idea if SYSINFO reports correct CPU speed on Falcon or not... Quickest way is just to check on a scope the clock line to CPU and see if its running 8MHz, but I assume that is the case anyway.
I tested with sysinfo, and it tells me that the frequency of the falcon is at 16 mhz.
by wietze
Tue Jul 09, 2019 6:52 pm
Forum: HARDWARE ISSUES
Topic: Low Performance Falcon
Replies: 13
Views: 1014

Re: Low Performance Falcon

Nembench report: Integer multiply (16bit) -> 0.5339 Mips (~87%) Integer divide (16bit) -> 0.330 Mips (~91%) Linear (stalled) integer -> 2.533 Mips (~31%) Interleaved (piped) integer -> 2.533 Mips (~31%) Float multiply (64bit) -> 0.242 MegaFlops (~91%) Float divide (64bit) -> 0.161 MegaFlops (~93%) L...
by wietze
Tue Jul 09, 2019 9:38 am
Forum: HARDWARE ISSUES
Topic: Low Performance Falcon
Replies: 13
Views: 1014

Re: Low Performance Falcon

exxos wrote:
Tue Jul 09, 2019 8:45 am
Have you checked the CPU clock.. Sounds like your falcon is stuck in 8mhz.
How do I check this?
by wietze
Tue Jul 09, 2019 7:35 am
Forum: HARDWARE ISSUES
Topic: Low Performance Falcon
Replies: 13
Views: 1014

Low Performance Falcon

Hi there guys, I found myself in the following situation (I only realized this week): - My Atari Falcon (030, 14mb ram) underperforms. I realized this when running New Beat's `joy' demo. I noticed that the machine takes more than 1 frame to calculate the demo ( http://frummel.org/~weedz/atari/exampl...
by wietze
Sun Oct 07, 2018 5:29 pm
Forum: ALPHA USER BUILDS
Topic: Icky - Progress
Replies: 667
Views: 47509

Re: Icky - Progress

I've been following the whole board development in general and this thread in particular pretty much since the start; impressive work all around. I am burning with one question; could test some demo footage with fullscreen/spectrum 512; Im REALLY interested to see how much of a perfect compatibility...

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