| Re: C64 compared to the Plus 4? [message #1899 is a reply to message #1822] |
Wed, 25 April 2012 10:09   |
MagerValp
Messages: 847
Registered: April 2012
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Senior Member |
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From Newsgroup: comp.sys.cbm
On Tuesday, April 24, 2012 4:44:50 AM UTC+2, Hg wrote:
>
> Not sure about it being faster - while looking up the machines
> capabilities I read a few reports that a double scan happens while
> the raster is visible and the clock speed slows to under 1mhz
> when the raster is off screen. One particular hardware site states
> that because of these factors the overall average speed equals 1mhz
> at the end of the day.
>
> Maybe a Plus/4 hardware guru can explain/elaborate the speed issue
> in a better reply for you?
It's about 12% slower while graphics is displayed, but 78% faster when it's not (in the borders). I don't have the details here, but iirc it works out to a PAL Plus/4 having about 40% more CPU cycles than a C64.
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