It is currently Fri Oct 20, 2017 11:52 pm

All times are UTC - 5 hours




 Page 1 of 1 [ 6 posts ] 
Author Message
 Post subject: New 1mb cartridge-loader. Select 1 of 15 games :-)
PostPosted: Wed Apr 20, 2005 1:28 pm 
User avatar

Joined: Sun Nov 02, 2003 8:15 am
Posts: 1249
Location: netherlands
Hello,

Doing lot's of coding for the new MyIDE + 1Mb flash cartridge,
made me came up with this file.

I have basically packed a number of standard 8k roms into
the cartridge. Please note that demon-attack only runs on
a 800 based OS.

Just play with it and let me know if you like the setup.

Kind regards,
Sijmen (mr.Atari)


Offline
 Profile  
 
 Post subject:
PostPosted: Sat Apr 23, 2005 3:56 pm 
User avatar

Joined: Mon Jan 12, 2004 5:01 pm
Posts: 82
Location: Reading UK
Just had a look at Demon Attack - the XL issue is
down to a direct jump into the OS that appears in 2 places:

$B72E & $B986 - original = $D1,$E7 i.e. jump to $E7D1

The equivalent jump in XL is to $C10F.
However, I don't think there's a common vector this
can be replaced with. Maybe the loader could be adjusted
to 'patch' the addresses if the appropriate OS is detected?

Here's an updated bin.

Regards,
Mark


There are images and/or files attached to this posting. You must be logged-in to view or download this content.


Offline
 Profile  
 
 Post subject:
PostPosted: Thu Apr 28, 2005 5:57 am 
User avatar

Joined: Sun Nov 02, 2003 8:15 am
Posts: 1249
Location: netherlands
Hi Mark,

Thanks for the file :-)

I know the problem with this cart. I didn't know were to patch it. THANKS!

Info:
E7D1 = NMI-entry point of the 400/800 revA-OS.
Imagic was very lucky it also runs on a RevB-OS, since Atari moved this entry point to E7AE......

In a XL-OS rev_2 or higher the address would be C0E2, but to be safe you should use the vector at $E45F. This makes a compatible cart for all Atari's!

Cheers,
Sijmen.


Offline
 Profile  
 
 Post subject:
PostPosted: Thu Apr 28, 2005 6:07 am 
User avatar

Joined: Sun Nov 02, 2003 8:15 am
Posts: 1249
Location: netherlands
Thanks again.

Here is the demon-attack cartridge that runs on ALL atari's :-)


Cheers,
Sijmen.
http//www.mr-atari.com


Offline
 Profile  
 
 Post subject: Programing roms
PostPosted: Fri May 26, 2006 1:21 pm 
User avatar

Joined: Fri Aug 29, 2003 4:37 pm
Posts: 223
Location: Arizona USA
Hi,
I noticed that you are calling the files roms.
Quote:
I have basically packed a number of standard 8k roms into
the cartridge. Please note that demon-attack only runs on
a 800 based OS.

Just play with it and let me know if you like the setup.

Kind regards,
Sijmen (mr.Atari)

:D I like the setup and was wondering if the programing Language roms could all be added to a cart like this. Assembler Editor Basic xl Basic xe Action Mac/65 Atari Basic rev. C and so forth. :oops: I have tried but I must not be using the correct syntax on the Perl command line..



_________________
RoyE
Offline
 Profile  
 
 Post subject:
PostPosted: Sat May 27, 2006 2:09 am 
User avatar

Joined: Sun Nov 02, 2003 8:15 am
Posts: 1249
Location: netherlands
I used a trick to save these rom-images to the flasher-disk.

First I figured out on what sector each 8k bank starts,
then I used QMEG to bypass the inserted cartridge and saved this
area with the build-in editor to these sectors.

The menu is 'first' cartridge on bank #0, which I programmed myself.
It's very close how the first MyIDE-loader was build.

Now, OSS cartridges are not standard 8K, but 16k (or more) banked.
These can not be put in the cartrdige like I did.

Cheers,
Sijmen.


Offline
 Profile  
 
Display posts from previous:  Sort by  
 Page 1 of 1 [ 6 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

cron