Re: [cc65] TGI mode switch without tgi_clear()

From: Greg King <>
Date: 2010-01-25 10:43:38
From: "Oliver Schmidt"; on Sun., Jan. 24, 2010; at 10:33 AM -0500
> On the Apple2, the RAM areas used to store the text screen content and
> hires graphics screen content are disjunct. Therefore, it makes sense
> to be able to switch between text and graphics modes without clearing
> either screen.

That is true of some other targets, too (such as the Commodore 128).  Also,
even where text and graphics share RAM, if there are two screen pages, then
only one of them might need to be cleared.

This issue was discussed a long time ago.  I thought that we had agreed,
back then, that the graphics screens shouldn't be cleared automatically!

To unsubscribe from the list send mail to with
the string "unsubscribe cc65" in the body(!) of the mail.
Received on Mon Jan 25 11:15:41 2010

This archive was generated by hypermail 2.1.8 : 2010-01-25 11:15:45 CET