Posted By
Mad
on 2020-04-06
08:59:49
|  Re: C64portal.pl has started - and it's not only c64 :)
Hi MMS and gerliczer
Not quite sure have to look in the video.. But if it really says that our computer is doubled as fast, then I would say that's wrong too..
I heard several times that the computer is a lot more powerful than the C64..
The 20% more in the normal case aren't that much difference. As programmer you have to see how you manage anything including software sprites and so on if you do stuff on the Plus/4. The 20% really don't make a big difference.
What is a lot more convenient on the Plus/4 is the graphics memory.
That's a real plus.
On the C64 you have 2 times the ROM charset visible in the graphics memory and other weird things to cope with. And you can do double or tripple buffering on the Plus/4..
And yes if you turn off the screen then you can do calculations at 2 time the speed to the normal mode, which is quite cool, too!  For instance you can decrunch things doubled as fast :)..
EDIT: Bubis has already an TED X-Scroll feature coded. If we would have X and Y scrolling, then the scrolling of a screen in any direction would take very very few cycles.. So we would've got complete scrolling of bitmap screens including colorram for free.. Which would also be a big advantage :). On C64 that (the "Agsp") effect does scramble the RAM on some machines and needs too shorten the visible bitmap area.. FLI on C64 also shortens the screen..
Anyways the C64 is a great machine, too.. It's much easier to code "arcade" games with it, "anyone" can do that..
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