Re: Double Speed?
Posted: Wed Apr 01, 2009 8:02 pm
Thanks for the feedback Ciaran!
This morning at 4.00 am I started program one from above with a for next count of 8806000 for 14 hours. It exited exactly on time this evening at 6.00 pm with a final displayed time of 844.56 minutes.
After the test, without switching off the computer I loaded Flipper and let it run in demo mode for a while just to make sure that the Dragon was functioning correctly after such a long test. The Dragon functioned perfectly and seems to be 100% stable.
BTW, do you happen to know the opcode for the HCF instruction?
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When you say "access", do you mean read/write, or will just reading from RAM do the job?sixxie wrote:Well, to refresh you only need access each row on a RAM within the refresh time -
Well, as there's definitely RAM refresh happening, this would seem to be the most probable explanation for now. I will write a small machine code program to test the theory.sixxie wrote: - in general, interpreting BASIC does access lots of sequential addresses, so that might just be enough.
BTW, do you happen to know the opcode for the HCF instruction?