Search found 70 matches

by Pennywise
Fri Oct 30, 2020 11:31 am
Forum: NESdev
Topic: Interrupt disrupting my MMC1 bankswap
Replies: 3
Views: 2263

Re: Interrupt disrupting my MMC1 bankswap

I ended up basically copying what the game does to handle interrupts interrupting MMC1 register writes.

Basically if the code detects an interrupt has occurred, it will write #$FF to the register and restart the writes over again. It seems to be doing the trick.
by Pennywise
Tue Oct 27, 2020 7:44 pm
Forum: NESdev
Topic: Interrupt disrupting my MMC1 bankswap
Replies: 3
Views: 2263

Interrupt disrupting my MMC1 bankswap

So, I've expanded a ROM to 512kb and basically made it into the mapper variant where there's basically 2 256kb ROMs and when I execute the code to switch between, I sometimes get an interrupt, which breaks my hack. I've been able to accommodate for the interrupt and basically have the routine reset ...
by Pennywise
Fri Jul 31, 2020 7:30 am
Forum: SNESdev
Topic: Mesen-S - SNES Emulator
Replies: 382
Views: 208746

Re: Mesen-S - SNES Emulator

Is this emulator also a standalone GB emulator? I've tried loading GB games, but they aren't recognized and I can't seem to find anything in the documentation that sheds light on the subject.
by Pennywise
Fri May 22, 2020 1:09 pm
Forum: NESdev
Topic: Expanding MMC1 from 256kb to 512kb
Replies: 4
Views: 2782

Re: Expanding MMC1 from 256kb to 512kb

Yes, I already know all that. I've decided to return to my first idea and try to isolate what's going wrong. It seems my hack fails whenever there's an interrupt and one of the writes to the registers resets the PRG block. So, I'm thinking there's some sort of conflict which perplexes me because I'm...
by Pennywise
Fri May 22, 2020 7:42 am
Forum: NESdev
Topic: Expanding MMC1 from 256kb to 512kb
Replies: 4
Views: 2782

Expanding MMC1 from 256kb to 512kb

So, I'm translating a Famicom game that was originally a 256kb MMC1 game and I've expanded it to 512kb to whatever the variant is that swaps 256kb PRG blocks. So, I initially switched blocks whenever the pointer table read is past a certain value and then switch back out when the text is done being ...
by Pennywise
Sat Apr 11, 2020 9:03 am
Forum: NESemdev
Topic: Mesen - NES Emulator
Replies: 896
Views: 435426

Re: Mesen - NES Emulator

I also include xdelta patches with my translations and I don't think that has the same issue as BPS, but I shall look at my ROM again.
by Pennywise
Sat Apr 11, 2020 8:50 am
Forum: NESemdev
Topic: Mesen - NES Emulator
Replies: 896
Views: 435426

Re: Mesen - NES Emulator

So broken it took 30 seconds to fix... Although I know some of you guys get up in arms when a ROM is expanded past mapper limitations. It happens that this project was inherited from someone else years ago along with the ROM expansion. Anyhow it's been so long, it's not worth the effort of scraping ...
by Pennywise
Tue Mar 24, 2020 2:18 pm
Forum: NESdev
Topic: Screen moving involuntary
Replies: 2
Views: 1901

Screen moving involuntary

https://images2.imgbox.com/0d/dc/w3JjHw4A_o.png https://images2.imgbox.com/fe/09/Kkei6GZY_o.png https://images2.imgbox.com/44/29/giG2BJt9_o.png I'm having an issue with the screen moving down when calling a menu in certain areas. I'm not entirely sure why this is happening, but I think it has somet...
by Pennywise
Thu May 30, 2019 7:38 pm
Forum: NESdev
Topic: Hacking text beeps
Replies: 9
Views: 10552

Re: Hacking text beeps

The game is Metal Slader Glory for those that are curious. I'm working on an update to my translation for it. Each character has their own unique text beeps for the most part and their own text speeds. All this is stored with the speaker name. Clearly I can see there is some correlation between the ...
by Pennywise
Thu May 30, 2019 4:30 am
Forum: NESdev
Topic: Hacking text beeps
Replies: 9
Views: 10552

Re: Hacking text beeps

When you say the init function, are you talking about the APU register $4015?
by Pennywise
Tue May 28, 2019 6:46 pm
Forum: NESdev
Topic: Hacking text beeps
Replies: 9
Views: 10552

Hacking text beeps

So I've never really done any sound hacking on the NES before and there's a text adventure game I want to increase the text speed (I know how to do that already) and reduce the amount of beeps per letter. Any help to get me pointed in the right direction would be appreciated. I've been looking at th...
by Pennywise
Mon Aug 06, 2018 9:32 am
Forum: GBDev
Topic: Possible vblank issue with text getting written to screen
Replies: 6
Views: 7472

Re: Possible vblank issue with text getting written to scree

Incidentally, I looked at the US release and noticed that the issue with longer text isn't an issue for that ROM. I think they made some coding improvements between releases and that might give me what I need to figure this out.
by Pennywise
Mon Aug 06, 2018 9:30 am
Forum: GBDev
Topic: Possible vblank issue with text getting written to screen
Replies: 6
Views: 7472

Re: Possible vblank issue with text getting written to scree

Well, there's actually an obscure sequel to the game that I want to translate at some point. So I figured I might as well do this one for the heck of it. IIRC, the official translation stripped the game of its Japanese-ness a bit.
by Pennywise
Sat Aug 04, 2018 3:41 pm
Forum: GBDev
Topic: Possible vblank issue with text getting written to screen
Replies: 6
Views: 7472

Possible vblank issue with text getting written to screen

So, I'm translating this simple game and it's pretty much finished, but there's an issue with longer text printing to the screen. I think I know what the issue is, but was hoping to get a second opinion. Anyhow, I've debugged the game a bit and was able to determine that it's not an issue with the g...
by Pennywise
Thu Aug 02, 2018 5:25 pm
Forum: Reproduction
Topic: Megami Tensei NES translation reproduction
Replies: 10
Views: 15494

Re: Megami Tensei NES translation reproduction

I don't know how I missed this thread, but reading through it has certainly bemused me. I'm the hacker and the game plus the translation are a real mess. It's a real horror show and converting that game plus translation to another mapper sounds like a nightmare. I say who cares the ROM was expanded ...