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 Post subject: Re: ACE80-XL to Flashcart?
PostPosted: Wed Apr 20, 2011 9:50 pm 

Joined: Wed Apr 20, 2011 9:22 pm
Posts: 6
Greetings Everyone!

Need some basic help from the "Gods" around...

I really, really like this little ACE80 Utility. It is one of those pieces of code that truly offers new functionality, yet manages to pull out the every bit of goodness the Atari HW has to give, AS IS, with nothing else except a humble cart.

I would like to re-create a) one version for LEFT-cartridge (I will try the one posted here in my 8Mbit cart, and see how it moves) and a b) RIGHT-Cartridge version, which I would absolutely love to have on the "Jay Miner" 800. Talk about some NICE use for that second slot.

EDIT:

Here are all the files needed: http://www.atariage.com/forums/topic/99 ... ge__st__50



Any help here for the RIGHT-cartridge version would be sincerely appreciated. Let me know if it is possible at all.

Many thanks in advance!


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 Post subject: Re: ACE80-XL to Flashcart?
PostPosted: Thu Apr 21, 2011 2:56 pm 
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Joined: Tue Aug 05, 2003 9:55 am
Posts: 1036
Location: Cleveland, Ohio
Is there a right-cartridge version of the ROM?

The flash cartridge is a 'left cartridge' only. You would have to perform a modification to the hardware for the Atari to see it as a 'right cartridge'.

Steve


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 Post subject: Re: ACE80-XL to Flashcart?
PostPosted: Thu Apr 21, 2011 3:00 pm 

Joined: Wed Apr 20, 2011 9:22 pm
Posts: 6
classics wrote:
Is there a right-cartridge version of the ROM?

The flash cartridge is a 'left cartridge' only. You would have to perform a modification to the hardware for the Atari to see it as a 'right cartridge'.

Steve



YES, there seems to be a right-cart version: it is the ACE80.EPR file (either 4K or 8K versions) on the link I posted (once there, look for a .ZIP file that has two ATR images, and the files are in-there).

MaxFlash Studio recognizes the ACE80.EPR file as a VALID Atari EXE file, BTW. I suppose that there has to be a minor/small change on that file to enable MaxFlash Studio flashing the cart with this particular image. (NOTE: I just re-read your post, and it seems that Flash-cart will not work as a RIGHT-one)...

...Ok. Is there any other valid alternative that would not involve physical surgery on the A800?


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 Post subject: Re: ACE80-XL to Flashcart?
PostPosted: Thu Apr 21, 2011 3:24 pm 
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Joined: Tue Aug 05, 2003 9:55 am
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Location: Cleveland, Ohio
Its actually the cartridge you would need to modify. You would have to disconnect the RD5 output and connect it to the RD4 input, then disconnect the S5 input and instead connect it to the Atari S4 input. Both changes would have to be made by cutting traces on the cartridge and soldering connections.

Afterward you would not be able to flash the cartridge again until it was changed back, as the hardware/software all expects a cartridge in the 'left cartridge' memory area.

Steve


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 Post subject: Re: ACE80-XL to Flashcart?
PostPosted: Thu Apr 21, 2011 3:32 pm 

Joined: Wed Apr 20, 2011 9:22 pm
Posts: 6
classics wrote:
Its actually the cartridge you would need to modify. You would have to disconnect the RD5 output and connect it to the RD4 input, then disconnect the S5 input and instead connect it to the Atari S4 input. Both changes would have to be made by cutting traces on the cartridge and soldering connections.

Afterward you would not be able to flash the cartridge again until it was changed back, as the hardware/software all expects a cartridge in the 'left cartridge' memory area.

Steve


Thanks.

Sounds to me like killing a healthy cart. only for this purpose, though.

Now, any suggestions to make the code work on a LEFT-flash cartridge? I tried to flash the sample available in a thread here (test.zip) and I it will not boot properly from the Cart, once flashed. Now, the actual piece of code DOES boot on Altirra, stand-alone.

F


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 Post subject: Re: ACE80-XL to Flashcart?
PostPosted: Thu Apr 21, 2011 7:49 pm 
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Location: Cleveland, Ohio
If there is no source you would need to disassemble the program and relocate the code to run a A000-BFFF instead of 8000-9FFF. If its using the RAM in A000-BFFF you would need to change those references to 8000-9FFF.

If there is source you may just need to change the .ORG directive from 8000 to A000 and check to see if its using any RAM, moving those references if needed.

Steve


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 Post subject: Re: ACE80-XL to Flashcart?
PostPosted: Sat Apr 23, 2011 12:48 pm 

Joined: Wed Apr 20, 2011 9:22 pm
Posts: 6
Steve:

So here's the story (per ACE80 author's notes):

"Try the copy of ACE80XL.EPR from the disk ACE80D1.ATR, which has the 4K ROM image. Do the replacing, remove the header, and flash it into the upper half of the 8K bank. I don't have an AtariMax cart so I don't know the flashing details, but I do know that ACE80XL ROM has to be in the address range $B000-$BFFF."

Required operating address-range seems to coincide with your recommendation. I have attached the corresponding modified "ACE80-XL-noHDR.EPR" file/s, with the following changes:

1. Removed 6-byte header (first six bytes) from original ACE80XL.EPR
2. Change "CRTOFF" equate value from $D508 to $D580, for properly "shutting down" the flash-cart. On actual file, pair is ($08,$D5) to ($80,$D5), only ONE occurrence found.
3. Save the file, with resulting 4096 exact byte-count (this is where I ENDED).

4. NOTE: there is another equate called "CARTON", which can be perfectly modified on the above file, in order to specifiy the cart's "bank" #, but for now remains at the original value ($D500, being the "00" the actual/residing bank of ACE80XL within the FlashCart).

5. NOTE: there is another ACE80XL.EPR file (also attached here) that was originally "padded" by the author to 8,198 bytes (including header) which I modified with the exact same procedure as above, in order to bring it to 8,192 byte-count. This file was supposed to take into account later OSS Carts, which required this mapping, and can be used if the 4K-size is not workable.

Now, as for the rest of the steps, I am supposed to flash the smaller 4K-version (per author's decription) in the "upper half" of a given operating 8K bank, inside of the 8Mb FlashCart, which I am not remotely sure how to do, nor how to specify.

Let me know if this additional step is possible (or not).


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 Post subject: Re: ACE80-XL to Flashcart?
PostPosted: Sat Apr 23, 2011 4:18 pm 

Joined: Sun Feb 19, 2006 1:33 pm
Posts: 89
Have you checked my posts from page 1? I posted a working image of a 1Mb flash cart version of the file, programmed and then redumped via the USB programmer.


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 Post subject: Re: ACE80-XL to Flashcart?
PostPosted: Sat Apr 23, 2011 8:57 pm 

Joined: Wed Apr 20, 2011 9:22 pm
Posts: 6
Stephen wrote:
Have you checked my posts from page 1? I posted a working image of a 1Mb flash cart version of the file, programmed and then redumped via the USB programmer.


THANKS, Stephen, for your follow-up.

Yes, I did check before your 1Mbit cart-dump, and tried to load it in Altirra, and IT DOES NOT work (with any of the cart. profiles selected, including the FlashCart 128K/1Mbit.

I will try to burn the .bin file on my 8Mbit cart, and see how it goes.

F.


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 Post subject: Re: ACE80-XL to Flashcart?
PostPosted: Sat May 07, 2011 11:26 am 

Joined: Wed Apr 20, 2011 9:22 pm
Posts: 6
Faicuai wrote:
Stephen wrote:
Have you checked my posts from page 1? I posted a working image of a 1Mb flash cart version of the file, programmed and then redumped via the USB programmer.


THANKS, Stephen, for your follow-up.

Yes, I did check before your 1Mbit cart-dump, and tried to load it in Altirra, and IT DOES NOT work (with any of the cart. profiles selected, including the FlashCart 128K/1Mbit.

I will try to burn the .bin file on my 8Mbit cart, and see how it goes.

F.


Well, as suggested by Stephen above, I burned the provided .BIN on page 1 and *it did not work*, once burned on the 8Mbit cart, and fired up on the Atari 800XL. I just get a black-screen and nothing else.

Any trouble-shooting comments/suggestions are more than welcome.

THX!


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