Need guidance with nes to snes. UPDATE: Port Complete of Mega Man IV + MSU-1

Discussion of hardware and software development for Super NES and Super Famicom. See the SNESdev wiki for more information.

Moderator: Moderators

Forum rules
  • For making cartridges of your Super NES games, see Reproduction.
infidelity
Posts: 490
Joined: Fri Mar 01, 2013 4:46 am

Re: Need guidance with nes to snes.

Post by infidelity »

Having a very difficult time keeping my hdma irq split functional, while horizontally scrolling.

When I enter a room where the upper half of the screen needs to move up and down, it does it. But soon after when I'm moving and sprites appear, the hdma split starts to spread apart? I got myself to a point where I was spamming the dpad over and over, shooting frantically, and it was adding to the separation of my hdma split. I cannot for the life of me figure this out, lost an entire day yesterday tryinf to figure it out.

update: figured it out, my routine wasnt working well with my frame counter idea, where I would AND #$01 against it, cause to keep everything smooth, my inc/dec of the y scroll had to be every other frame.
infidelity
Posts: 490
Joined: Fri Mar 01, 2013 4:46 am

Re: Need guidance with nes to snes.

Post by infidelity »

update: I've nailed the hiccup with my incorrect tilemap appearing during an irq firing up.

As of writing this, I just played through an entire stage of the game, with zero glitches to report. :-)
infidelity
Posts: 490
Joined: Fri Mar 01, 2013 4:46 am

Re: Need guidance with nes to snes.

Post by infidelity »

I found out nesdev is back! It went down around the time I finished my port in August!

History
http://acmlm.kafuka.org/board/thread.php?id=9337

Twitter announcement
https://twitter.com/infidelity_nes/stat ... 4Hf9A&s=19

Twitter announcement of revision A
https://twitter.com/infidelity_nes/stat ... F5vZQ&s=19
Pokun
Posts: 2681
Joined: Tue May 28, 2013 5:49 am
Location: Hokkaido, Japan

Re: Need guidance with nes to snes. UPDATE: Port Complete of Mega Man IV

Post by Pokun »

Good job finishing the port! Not a bad choice of a game either.
User avatar
Banshaku
Posts: 2417
Joined: Tue Jun 24, 2008 8:38 pm
Location: Japan
Contact:

Re: Need guidance with nes to snes. UPDATE: Port Complete of Mega Man IV

Post by Banshaku »

Congratulation on completing the port!
Nokia3310
Posts: 12
Joined: Mon Nov 02, 2020 1:52 pm

Re: Need guidance with nes to snes. UPDATE: Port Complete of Mega Man IV + MSU-1

Post by Nokia3310 »

Big congratulations! I've been playing this on a Super Famicom. This is a brilliant thing. Lots to be proud of here :)
Post Reply