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From: kholland@hydra.unm.edu (Kiernan Holland)
Newsgroups: comp.sys.amiga.graphics
Subject: Re: WANTED: Full page paint program
Message-ID: <1991May18.063427.28733@ariel.unm.edu>
Date: 18 May 91 06:34:27 GMT
References: <Twc123w164w@bluemoon.uucp> <RDi4217w164w@graphics.rent.com>
Organization: University of New Mexico, Albuquerque
Lines: 58

In article <RDi4217w164w@graphics.rent.com> bobl@graphics.rent.com (Bob Lindabury - SysAdm) writes:
>moonhawk@bluemoon.uucp (David Culberson) writes:
>
>>         How high will it go? I was looking for around 2250x3300, would it 
>> go THAT high, and, if so, how much chip mem would it take? In 1 bitplane, 
>> of course.
>
>As far as I know, the size is only limited by RAM.  I had no problems
>with a 2k x 2k page size.  I believe I tried a 2k x 4k page size also
>in Hi-res without a problem.
>
>I will try now...Well, I have a 7 meg system with a ECS Agnus and I
>could only get a 2kX2k page size.  Of course I have Workbench and
>some other things running.  I would think you should be able to get
>what you are looking for if you CTRL-D right into amigados and then
>just run Dpaint.  See what you can do!
>
>-- Bob
>
> The Graphics BBS  908/469-0049  "It's better than a sharp stick in the eye!"
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Here is a little estimate of how much you can do:
 
 1024X1024 = 
			 128K in 1-bit plane (2 colors),
			 256K in 2-bit       (4 colors),
			 384K in 3-bit       (8 colors),
			 512K in 4-bit       (16 colors),

			 Thats for storage, then you have 32K to 128K for view-port 
			 storage (so you can look at the silly picture).

			 with ECS Agnus (1meg version) you can have a max 
			 screen resolution (using 1 bit-plane) of 2K by 4K. 
			  
			 with Super Agnus (Amiga 3000 owners must install the 
			 DRAMS into the additional space provided on the mother 
			 board before getting these capabilities [it does not come 
			 to you with 2Meg chip ram, it comes with half the CHIP
			 Ram populated) you can get 4K by 4K in 1 bit mode.
			  
			 actually it is not possible to get this high a resolution
			 considering that Workbench or some program is always 
			 taking some of it away. 



			  
			  Here's the formula: 
			  Resolution(x) * resolution(y) * resolution(z)/ 8 bits =
			  ammount of memory needed. Note Resolution (Z) is 
			  the screens depth.