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Alternate Reality : Dungeon image?


WIZZARD77

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  • 2 months later...
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i made a music video from this awesome game...

 

Ha, I don't know why, but I picture Vincent Price (with an English accent) singing this.

 

Edit: not a bad thing at all, just can totally see him doing it for some reason :)

Edited by leech
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Bumping this thread...

 

Is there any news regarding a cartridge version of the game? I was thinking in forcing the game to work with 48K Ram and then putting a read sector routine at $CC00. At least it woud work with 64K ram machines at least.

 

What do you think about it?

 

 

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The discovery (as mentioned in the link above) is that there isn't just one read sector routine but many, and so to patch their access to redirect to a single one would (IMO) require the approach of decoding all parts and disabling decoding in the new loading routine(s). Quite happy to collaborate if you want to take it offline.

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It's interesting to see the people around here go up against what appears to be the incredible genius of Phillip Price in general but especially regarding copy protection. So what is the bottom line on the above image posted? Is it a fully-working image of all four discs combined as 1 at are SD Max compatible? Are there still issues be worked out that still make it not quite fully playable?

Edited by JagChris
Aagh
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Here's a first stage of the cartridge conversion. It does the following:

 

1. Copy OS into RAM zone $C000-$FFFF. That means that it will only work on 64K machines at least.

2. Get intro and play it.

3. Loading core game routine.

4. Patch RAM size detection to force it to 48K. That way, I can protect the OS RAM zone.

 

Please note that this cartridge will not work, unless you mount the ATR image in D1:

 

Attached is the cartridge image and the source I made so far. Nothing fancy at all. Just patching some locations here and there.

 

What else to do:

1. Patch custom SIO call routine to $CC00. Need to know where is the buffer location to write into memory.

 

It's just a kickstart. Hope it encourages with feedback and join efforts.

 

Cheers!

ARDungeon.zip

Edited by Wilheim
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Ok, here's a second version. It loads at least to the main menu.

 

Problem is it seems that for some reason it doesn't load the proper sectors, so there's is a corrupted character creation screen displaying. Anyone could give suggestions about it?

 

I had to override the checksum routine in order to get to the main menu. That could be a clue.

 

Cheers!

ArDungeonV2.zip

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Ok, here' the link:

 

https://github.com/Wilheim1977/ARDungeonCartridge

 

What I'm trying to do is to create a virtual D4: drive for the cartridge, so the game "thinks" that he's reading on this drive, by skipping the D4: detection routine and also checking the drive number in my routine at $CC00. Additional to that, I decided to detect at least D1:, D2: and D3: in the case anyone wants to save the character on disk. This is for the moment, of course.

 

Hope it helps.

Edited by Wilheim
Giving more detail.
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