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From: DYOUNG@USC-ISID.ARPA (C. David Young)
Newsgroups: net.micro.atari8
Subject: Re: New user comments on CDY's Omniview and 256K upgrade.
Message-ID: <8603031330.AA13862@ucbvax.berkeley.edu>
Date: Mon, 3-Mar-86 08:20:03 EST
Article-I.D.: ucbvax.8603031330.AA13862
Posted: Mon Mar  3 08:20:03 1986
Date-Received: Wed, 5-Mar-86 04:02:36 EST
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John,

Thanks for the thorough reviewof of OMNIVIEW XL, OMNIMON XL, Ramrod XL, and 
256KXL. I would like to add only a few more comments:

I think you implied that you could readaccess the ramdisk from OMNIMON XL. This
is true of the 8K OMNIMON and the AXLON ramdisk but it is not true of
OMNIMON XL and 256KXL. OMNIMON XL has no ramdisk handlers. OMNIVIEW XL does.

You would not have has to do any filing on the Ramrod had you installed a
socket to elevate the board slightly. When those instructions swere written
all 800XLs had sockets.

I have pleaded with Newell to make the 256KXL instatallation instructions
more explicit. Diagrams showing where to route the wires and exactly
how to mount the boradordard would be very helpful. He claims that he does no
want to make it too easy on a novice so that they will not attempt to
do the installation if they do not have the skills. I of course totally
disagree!

Ass I mentioned to you before, I am busily converting AtariWriter+ over to
work with OMNIVIEW. This is especially challenging because there is , at
least on the surface no memroyory after the program is loaded in! This is
a real problem becoause the OMNIVIEW secreen takes 7K whereas the GR.0
screen takes only 1K. But then I knowticednoticed that the 130XE version uses all
5 of the 16K banks at 4000-7FFF, but that 1 bank is only partially used.
It appears that they only used 4K of this bank, leaving 12Kplenty of room
for the OMNIVIEW screen. Howverever, there is a slight problem in that this
is not the main bank ($D301=$FF). If it were then I could direct ANTIC
to stay with this bank even though were swapping in other baknnks with the
CPU. I plan to overcome this problem by reassighgning the banks. By the way,
having ANTIC follow main memory just happens to be the conveiontntion that
Newell chose fot tr the 256KXL, unless of course you add the switch to make
it fiollow memorybanked memory.

By the way, please ignore the typos. I am using a termianlnal that does not
make it too easy to make corerections.

David Young
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