Re: Implement Double-Res Differently

[Holger Picker <pickerh@uni-muenster.de>]

On Mon, 13 Jan 2003, Bryan Parkoff wrote:

> Date: Mon, 13 Jan 2003 22:53:02 -0600
> From: Bryan Parkoff <BParkoff@satx.rr.com>
> Newsgroups: comp.sys.apple2
> Subject: Implement Double-Res Differently
>
> Implement Double-Res Differently
>
>     I know the fact is that 40x24, 80x24, low resolution, and high
> resolution use 280x192 pixel, but double resolution uses 560x192.  Is it
> true that one pixel plots in the screen using both main and aux memory page.
If that was meant to be a question (sorry, I could not fully understand
the meaning of your sentence.), the answer is: yes, in a certain way. 4
consecutive bits taken from both main and aux memory form one pixel.

> I really hate 560x192 pixel in real Apple II and emulator.
Sorry, but could you, please, add why you hate it? What do you think is wrong
with it?

> I love to use 320x280 pixel on all PCs that look like real 560x192 pixel.
What do you mean by that? How can 320x280 look like "real" 560x192?
(Which standard PC screen mode do you use for a resolution of 320x280?)

> I begin to think another way to implement double resolution differently
> which it uses 280x192 pixel instead of 560x192 pixel using real 320x280
> resolution in this emulator project.
May I ask you, which emulator project are you refering to? Is there a
homepage for this?

> Both main and aux memory pages will map into single memory to form
> one pixel using 280x192 resolution on 320x280 resolution that will look
> much nicer. What do you think about my idea?
Are you sure that it will look nicer? AFAIK, most of the programs I know of
so far do expect a resolution of 560x192, otherwise they won't work. For
example, have a look at the game "Pirates". The characters on screen become
totally illegible when seen under a resolution less than 560x192. Other
examples would be "Test Drive", or "Dragon Wars" (i.e. every program that
writes characters to the screen).
My question therefore is: Even if you have a new emulator that offers a new
screen resolution mode for the AppleII, you will not have the programs that
make use of it. So, where is the point? You may dislike the double hires
resolution, okay, but after all this is how the AppleII was designed.

> --
> Yours Truly,
>
> Bryan Parkoff
> BParkoff@satx.rr.com
>
Kind regards

Holger