Path: utzoo!attcan!utgpu!watserv1!watcgl!electro!ignac
From: ignac@electro.UUCP (Ignac Kolenko)
Newsgroups: comp.sys.atari.st
Subject: Re: tos 1.4 problem?
Message-ID: <1219@electro.UUCP>
Date: 1 Dec 89 16:13:29 GMT
References: <1214@electro.UUCP> <1836@atari.UUCP>
Reply-To: ignac@electro.UUCP (Ignac Kolenko)
Organization: Electrohome Ltd., Kitchener, ON
Lines: 32

In article <1836@atari.UUCP> apratt@atari.UUCP (Allan Pratt) writes:
>ignac@electro.UUCP (Ignac Kolenko) writes:
>>		Fwrite (wHandle, 0x20000L, (char *)0xC00000L);
>
>Sorry, guy, the ST can only DMA from ST memory.  You can't do DMA from
>ROM, either.  You'll have to copy from the special memory to real
>memory, then write that to disk.  If you're using Fwrite it can't be
>that time critical...
>



thanx for the quick reply. that's all i wanted to know. after the above
code didn't work, the first thing i tried was copying that memory range
into main memory, and then fwriting. just wanted to check if it was something
we screwed up in designing the co-processor card.

a further question: does that mean that with any of these
hi-res displays that are available (ie: 1024 by 1024 type monochrome
display, etc) you cannot save out the screen memory directly to hard
disk?? does that mean that you are forced to always copy the screen
image into main memory, and then save it out?? 

a further further question: does anyone out there actually own one
of these hi-res mono displays???? if so, how do you like it??


-- 
=====Ignac A. Kolenko (The Ig)           watmath!watcgl!electro!ignac=====
     co-author of QuickST, and the entire line of Quick Shareware!!!!
       "I don't care if I don't win, 'cause I don't care if I fail"
             from 'Youth Of Today' by SUBURBAN DISTORTION