Q68 Advance Notice 2 - Pricing

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Peter
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Re: Q68 Advance Notice 2 - Pricing

Postby Peter » Tue Sep 26, 2017 9:11 pm

Thanks. By the way, if only short routines need speedup, there is a 12 KB area of fast RAM at $19000 ... $1BFFF.
Code executed in that area usually runs several times faster and is not affected by video access.
At the moment, SMSQ/E uses only a small portion of the fast RAM, maybe the rest can be made available.


afx
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Re: Q68 Advance Notice 2 - Pricing

Postby afx » Tue Sep 26, 2017 9:28 pm

What about the power supply for Q68? Is it easy to get one in online store?

Derek , do you have Q68 power supplies available for sale?


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Zarchos
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Re: Q68 Advance Notice 2 - Pricing

Postby Zarchos » Wed Sep 27, 2017 6:38 am

Peter wrote:Thanks. By the way, if only short routines need speedup, there is a 12 KB area of fast RAM at $19000 ... $1BFFF.
Code executed in that area usually runs several times faster and is not affected by video access.
At the moment, SMSQ/E uses only a small portion of the fast RAM, maybe the rest can be made available.


Excellent to know !
You said "several" times faster ?
Could you give examples with cycles consumption when accessing memory, if code is in this area ?
Should the data accessed also be in that area ?

This, for sure, is a capital info to take into account.


Owner of various QLs including accelerated beasts, and also a happy Q68 owner ;)
Now porting SOTB to the Archies, to then port it to the Q68.
https://www.youtube.com/user/Archimedes75009/search?query=Acorn+Archimedes+Shadow+Of+The+Beast+%28100%25
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Peter
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Re: Q68 Advance Notice 2 - Pricing

Postby Peter » Wed Sep 27, 2017 8:19 am

Power supply: Yes these are standard 5V devices with 2.1 mm coaxial connector. I think Derek will comment on this after his return.

Q68 execution speed from "fast RAM" region: Simple register to register instructions like ADD oder MOVE take 1 cycle, i.e. 25 ns
Please note there is no officially defined way for user programs to allocate memory there (yet).


micken
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Re: Q68 Advance Notice 2 - Pricing

Postby micken » Thu Sep 28, 2017 9:08 pm

[
I want the complete kit, I hope I am not to late :)

I missed this kind of hw since I sold my fully working Q40!


I need to skip this. Made a bit of a problem with family :/



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