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Ebivision Pac-Man & Ms Pac Mod

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Does anyone know if this will ever be sold? It sure looked great in a video clip I saw.

 

One thing I've always been curious about, what with all the attempts for 'truer' to the arcade hacks/rewrites on the 2600, what about Intermissions? Ms Pac Man has 4 mazes, could the extra space from cutting 3 mazes be used to put the intermissions in?

 

And if ebi won't give us pac, how about hacking their pesco into a better version of pac & ms pac? Maybe add intermissions to both of em!

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Well, I think Pac-Man Arcade is about a damn-near spot-on as a 2600 cart is gonna get. No need to improve anything there.

 

Putting in an intermission might be a hoot, but really doesn't add anything to gameplay. (Put neither did adding voice to Berzerk, but it was damn cool. Hmmm I contradicted myself.)

 

Finally, hacking the Ebivision releases is definately uncool. It'd be like hacking the ROM released by any of the homebrewers here. Hacking a 20-year old ROM is (somewhat) "OK." But not hacking the ROM of someone who is still creating games for the system.

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Well the Pesco ROM isn't out there either, for that matter. Ebi Pac-Man differs from the standard Pac-Man arcade hack because it was only 4k, as opposed to 8k like the hack is. The original Atari pac-man was also 4k, so the ebivision one was essentially just to prove that the atari could run a spot on translation of pac-man with the limitations they had at that time.

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If it was publically available, someone should hack the Ebivision Pacman to have the original 2600 Pacman graphics i.e the blinking non-colored ghosts & the slow-chawing "never facing up or down" Pacman, and our favorite treat, the Wafer :D

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You'd need to go to 12 or 16K to add the intermissions into Pac26/Pac-Man Arcade. I used the space I gained from the three removed mazes for extra code (mainly sound stuff). Believe it or not, each screen only consumed 42 bytes of data (the playfield data for the maze.)

 

I could have made more space (probably not enough for intermissions) if I'd had a disassembler and assembler that handled 8K carts, but I was hand assembling everything and entering it with a hex editor. This made doing things like removing the "decide which screen to display" code kinda impossible.

 

I've heard that 8K-compatible versions of dasm and distella exist (and presumably more, since people have released 16K and 32K homebrew games) but I have no idea where they live. If anyone has links, especially to source, please post 'em.

 

Rob

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I've heard that 8K-compatible versions of dasm and distella exist (and presumably more, since people have released 16K and 32K homebrew games) but I have no idea where they live.

:idea: DASM has been used to compile even 32K ROMs without any problems.

 

:idea: DiStella can only handle 4K ROMs, but I have posted some tips in the Programming forum how to disassemble larger ones.

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wow, so if ebi pac is only 4k, and looks more like real pac than the hacked ms pac rom, making it 8k should give it plenty of room for intermissions.

 

For humors sake, I'd love to see ebi pesco hacked w/ the limitations of ol ugly atari pac heheeheee thats funny.

 

And, wow, talk about effecient!!! I had no idea those mazes were SO small! Amazing!...

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Yeah, each row of pixels is like 3 bytes (20 bits and 4 bits, right?). You get 40 pixels because the last 4 bits decide if the screen should be mirrored, etc. And the program just copies the same bytes over again to get a number of rows before moving the pointer to the next set of bytes.

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I've heard that 8K-compatible versions of dasm and distella exist

 

8K bankswitching is fairly simple and DASM handles it no problem. If you check the Stella list there have been a couple 8K templates posted recently (One by Manuel and a revision by me)

 

 

Chris...

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Is the Ebvision Pac-Man & Ms.PacMan available for purchase / rom download? That version looks excellent!

 

No and no. The game became "Pesco" which is now no longer available either. The Pac-Man games were never released, only demoed.

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on an unrelated note here is a sample from ebivisions page of a 3d technique they are trying to create on the 2600 (created in 3d studio, simulating 2600 resolution, etc.)

 

http://atarivcs.free.fr/ebivision/3d2.avi

 

very interesting...

 

but i dont see how the 2600 could do that at 12 fps as they claim...

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