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Search found 17 matches
- Thu Dec 22, 2022 5:21 am
- Forum: Discuss This Site
- Topic: The Dragon 32 and other old computers say Merry Xmas and Happy New Year!
- Replies: 1
- Views: 9103
- Thu Jan 17, 2019 10:13 am
- Forum: Dragon General
- Topic: A mathematical demo
- Replies: 17
- Views: 14152
Re: A mathematical demo
So it proves that DIVQ is rather correct. IMHO It is worth to publish one of the pictures.robcfg wrote:It’s a blessing I kept the pictures I took from the screen with the different results
They all match on all four configurations.
- Wed Jan 16, 2019 1:40 pm
- Forum: Dragon General
- Topic: A mathematical demo
- Replies: 17
- Views: 14152
Re: A mathematical demo
I'm surprised myself! Not about the timing - Darren A documented all that and he's generally pretty reliable - but that XRoar's DIV instructions work as they should. I basically never had a test case for them :) Do you use both DIVD and DIVQ, or only one of them? Do you exercise them well, e.g. mak...
- Tue Jan 15, 2019 9:11 am
- Forum: Dragon General
- Topic: A mathematical demo
- Replies: 17
- Views: 14152
Re: A mathematical demo
Thanks a lot! :) The benchmark results are updated - http://litwr2.atspace.eu/pi/pi-spigot-benchmark.html XRoar is surprisingly accurate even with 6309. A lot of thanks to its developer too. It is interesting that your hardware could work at the double speed without problems. Does your iron actually...
- Sun Jan 13, 2019 9:25 pm
- Forum: Dragon General
- Topic: A mathematical demo
- Replies: 17
- Views: 14152
Re: A mathematical demo
Thank you very much! Your results show that XRoar is very accurate, it gives almost the same numbers. Would you like to get results for 3000 digits? It is the most precious values. We also got an interesting collateral result - The Dragon works stable in the fast mode (that is without DRAM refreshin...
- Sat Jan 12, 2019 2:32 pm
- Forum: Dragon General
- Topic: A mathematical demo
- Replies: 17
- Views: 14152
Re: A mathematical demo
Bump! Could anybody help me and run my pi-calculator with the real silicon 6809? Indeed tests with 6309 can give us even more interesting results.
- Sat Jan 12, 2019 2:27 pm
- Forum: Dragon General
- Topic: an article about 6800/6809/6309 was published
- Replies: 1
- Views: 3590
Re: an article about 6800/6809/6309 was published
The article about 680x is updated. New interesting facts were added, the style was improved. Thanks for reading. I am open for any ideas about corrections and additions.
- Sat Sep 01, 2018 9:11 am
- Forum: Dragon General
- Topic: an article about 6800/6809/6309 was published
- Replies: 1
- Views: 3590
an article about 6800/6809/6309 was published
It is at https://litwr.livejournal.com/1396.html. I will be glad to get more information about these processors, corrections are also appreciated. This article is a part of CPU reviews - https://litwr.livejournal.com/.
And BTW what is the best web site dedicated to Motorola 6800 family?
Thank you
And BTW what is the best web site dedicated to Motorola 6800 family?
Thank you
- Mon Feb 27, 2017 9:13 pm
- Forum: Dragon General
- Topic: Return of the Beast
- Replies: 13
- Views: 11726
Re: Return of the Beast
It reminds me Space Pilot for Commodore but with better sound and graphics.
- Mon Feb 27, 2017 9:07 pm
- Forum: Dragon General
- Topic: A mathematical demo
- Replies: 17
- Views: 14152
Re: A mathematical demo
Thank you. However the data for 6309 may not be too accurate. I am using Xroar. There is another problem with it. Pi-demo uses Dragon at its maximum speed at 1.78 MHz. So it may not work with real iron because there is DRAM regeneration problem. Pi-demo uses continuous memory interval and this shoul...