Jump to content

doctorclu's Photo

doctorclu

Member Since 28 Jan 2004
OFFLINE Last Active Yesterday, 5:08 PM

Topics I've Started

Moon Patrol - Arcade Sprite Hack (Call for Moon Buggy drivers!)

Mon Sep 24, 2018 7:38 AM

This is a call for brave volunteers to patrol the lunar surface to protect the citizens against visiting riff raff.

 

Attached File  post-4709-0-13756000-1537764045.png   21.74KB   4 downloads

Seen above is a sprite hack of the Atari 800 version ** to something more like the Arcade*, with all background and buggy character color matched to arcade screen shots.

 

The latest rom to try is here (not the same buggy, though that version is being developed, however the colors are the same.) **

 MoonPatrol 02 5200.bin 

 

How you are needed:

At current we are getting conflicting color reports...

Attached File  post-4709-0-19888700-1537786966_thumb.png   210.37KB   4 downloads

... Altirra (Windows under Wine) is the larger image left and the small image to the lower right was taken from Atari800OSX.

 

Can someone please try the above image on real hardware and report your results/screen shots/pictures to the hacking thread?

 

 

 

There are more technical programming questions regarding this that can be found on this programming thread.

 

* Sprite hacks drawn and hacked by TIX.   Technical research and color alters by DoctorClu.

** (there is a proto version of the 5200 with the above version due out today or tomorrow)


Moon Patrol - Arcade Sprite Hack (Call for Moon Buggy drivers!)

Mon Sep 24, 2018 7:30 AM

This is a call for brave volunteers to patrol the lunar surface to protect the citizens against visiting riff raff.

 

Attached File  post-4709-0-13756000-1537764045.png   21.74KB   19 downloads

Seen above is a sprite hack of the Atari 800 version to something more like the Arcade*, with all background and buggy character color matched to arcade screen shots.

 

The latest rom to try is here:

 moon-test-n2b.bin

 

How you are needed:

At current we are getting conflicting color reports...

Attached File  post-4709-0-19888700-1537786966_thumb.png   210.37KB   19 downloads

... Altirra (Windows under Wine) is the larger image left and the small image to the lower right was taken from Atari800OSX.

 

Can someone please try the above image on real hardware and report your results/screen shots/pictures to the hacking thread?

 

 

 

There are more technical programming questions regarding this that can be found on this programming thread.

 

* Sprite hacks drawn and hacked by TIX.   Technical research and color alters by DoctorClu.


What would a PRIOR statement look like in hex?

Mon Sep 24, 2018 7:03 AM

Originally posted here:

 

FifthPlayer, on 23 Sept 2018 - 11:32 AM, said:snapback.png

 

This is very easy to do.  You only need to set bit 5 on GTIA's PRIOR register.  It's only a tiny change, but it is a code change. 

 

Where the two sprites overlap you will get a third color.

 

I realized this was the cool ability I discovered while hacking Miner 2049er where they had the green helmet for Bounty Bob.   I'd love to add this ability to the Moon Patrol sprite hack we are doing.  I work mostly with hex editors so I was wondering what this PRIOR register would look like in hex?

 

I found this reference on De Re Atari:

Attached File  post-4709-0-76162800-1537787559.png   37.24KB   8 downloads

 

Another question I have is: would the fifth bit also be the fifth mode?   If so D6 and D7 would be 00?

 

But the main question so I can search for it in the code is what the hex code would be for the PRIOR statement?

 

-------

Below is the graphics hack of Moon Patrol for the Atari 800 where the colors and sprites have already been altered.  Combined color would offer a third color for the windshield on the moon buggy.

Attached File  post-4709-0-13756000-1537764045.png   21.74KB   4 downloads

 

Here is the rom if you'd like to reference it for the above question on the PRIOR statement:

moon-test-n2b.bin
 


Miner 2049er - 5200 - Miner Alternative Sprite Edition

Sat Sep 15, 2018 2:50 AM

The Adventures of Bounty Bob, brave Cananian Mountie on the trail of Yukon Yohan.

 

Bounty Bob, who looks neither like a Mountie, nor like the miner on the box covers and as the title would suggest. 

 

Until now.

 

With sprite designs by TIX, and sprite hacks by your's truly, I introduce to you the burley Miner 2049er!

 

[Recorded with Atari800 OS X .  Atari800OS X has a no sound bug in current revision.]

 

Miner2049er 5200 AS01.bin

 

Try it out.  Was able to get this to run under Atari800 OSX, but not Altiera for some reason.

 

Prior revisions and the thread on how this was hacked here

 

Attached File  post-4709-0-31473600-1536944368.jpg   29.87KB   14 downloads


Miner 2049er - Miner Alternative Sprite Edition

Fri Sep 14, 2018 11:10 AM

The Adventures of Bounty Bob, brave Cananian Mountie on the trail of Yukon Yohan.

 

Bounty Bob, who looks neither like a Mountie, nor like the miner on the box covers and as the title would suggest. 

 

Until now.

 

With sprite designs by TIX, and sprite hacks by your's truly, I introduce to you the burley Miner 2049er!

 

 

Click here to download

 

Prior revisions and the thread on how this was hacked here

 

Attached File  post-65-0-92807700-1536858013 (1).jpg   29.87KB   25 downloads