Jr. Pac Man corrected version?

[tz101]

Would it be possible for a home brewer to correct the 2600 version of Jr. Pac Man, making the mazes scroll horizontally like the arcade version? How difficult would this be?

[Wickeycolumbus]

Would it be possible for a home brewer to correct the 2600 version of Jr. Pac Man, making the mazes scroll horizontally like the arcade version? How difficult would this be?

 

It's possible, but would be very difficult. It may be easier to just start from scratch.

[segasaturn]

Can the 2600 do that!?!?!?!? If it could I hope someone does it soon.....

[Shawn]

Yes the 2600 can do horizontal scrolling.

[seanhq]

Yes the 2600 can do horizontal scrolling.

So is that an offer to fix up Jr. Pac-Man?

[Wickeycolumbus]

Sure, any system can do horizontal scrolling. The problem with the 2600 though is that it must be done in software, there is no hardware to aid with this. It requires plenty of RAM, or alternatively a substantial amount or ROM. Hacking the original Jr. Pac-Man to scroll horizontally rather than vertically wouldn't be a cakewalk

[seanhq]

Sure, any system can do horizontal scrolling. The problem with the 2600 though is that it must be done in software, there is no hardware to aid with this. It requires plenty of RAM, or alternatively a substantial amount or ROM. Hacking the original Jr. Pac-Man to scroll horizontally rather than vertically wouldn't be a cakewalk

I guess that you could always just turn your TV on it's side and play Jr. Pac-Man

[jaybird3rd]

Yes the 2600 can do horizontal scrolling.

It can, but not nearly as smoothly as vertical scrolling because of the limited horizontal resolution of the playfield. If you want to see horizontal scrolling in action, play Vanguard and watch the landscape, and imagine the Jr. Pac-Man maze moving across the screen in the same way. That's probably one reason GCC opted to use vertical scrolling for the 2600 version.

[Wickeycolumbus]

Yes the 2600 can do horizontal scrolling.

It can, but not nearly as smoothly as vertical scrolling because of the limited horizontal resolution of the playfield. If you want to see horizontal scrolling in action, play Vanguard and watch the landscape, and imagine the Jr. Pac-Man maze moving across the screen in the same way. That's probably one reason GCC opted to use vertical scrolling for the 2600 version.

 

Exactly. Though it may be possible to use the TIA's RSYNC register to achieve one pixel resolution scrolling (rather than the 4 pixels as seen in Vanguard).

[jaybird3rd]

Exactly. Though it may be possible to use the TIA's RSYNC register to achieve one pixel resolution scrolling (rather than the 4 pixels as seen in Vanguard).

There's also the issue of whether there will be enough time to rewrite the playfield, with all the scrolling and (sometimes) multiple sprites per scanline.