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But now you have me worried on the "dangerousness" of the above "loop" What should the actual irq engine look like? Im so close, but sprites have to be involved if im making a hg boss, plus I need to alter the irqs xy position, to give the appeatance of motion. The link you showe...

OK, last night I took a look at the actual irq used in Zelda 1, and i tweaked it to use specific registers instead of hard coded values. This irq allows me to actualy go past the HUD, i can get the irq down to about the middle of the screen, but if I try to make it lower, and theres say about 4 of t...

The reason im here is because I dont know what to do. Im trying to do something from the ground up, something ive never messed with majorly, so yes, its not working correctly, and yes, I hacked it, but here is what I knoe. With sprite 0 in zelda, its only initiated by initiating a screen scroll. $20...

I really dont know, again I really dont understand how it works and the terminology surrounding it. Im not experienced in the fundementals of doing this from scratch, ive messed with values for irqs in games, but trying to put it in a game that doesnt use it, I have no idea, but I have been, and dti...

I honestly dont know if it does. but that might be the case. What would I write into $4017 to disable that?

@ never-obsolete, sure id like to see what you did for a custom irq.

Does mmc5 do that, cause thats the current mapper im at.

I have been trying really hard on my own, to create a custom irq engine with my Zelda hack, which at the time was using MMC3. I scrapped the idea back when i figured out how to manipulate the Sprite 0 irq setup within Zelda 1. But the original Sprite 0 irq within Zelda 1, will not allow me to do cer...

No I dont believe you're seeing things. Ive tried very hard to create a separate NEXT piece for p2. Originaly in the hidden 2p mode, both players go for one NEXT piece. Whichever players piece lands/completes first, obtains the NEXT piece. It was difficult trying to keep my code from glitching. I th...

Here is my latest .ips. Tetris Zero (MMC3-118-v2) http://acmlm.kafuka.org/uploader/get.php?id=4409 This is taken from the .txt within the .zip file. 4-16-13 infidelity Tetris Zero Fix For TKROM Board & Nestopia It was brought to my attention that when inserting Tetris Zero on a TKROM board, that...

I got it working properly on Nestopia now. I dont have the internet, I do my online stuff via my smartphone. When I get the chance ill upload the new .ips, and ill put up a detailed list of what I did. It had alot to do with adding additional writes to $A001.

-infidelity

I havent changed the header, but I added the sram code to the beginning of my reset vector earlier today, and it didnt work. Im baffled. Btw, whete in the header do you change the battery bit?

The bankswap isnt the issue, my routine works fine, the game wouldnt boot in anything if I did that incorrectly.

I just dont understand why its happening within nestopia. Nintendulator is just as picky as nestopia, but nintendulator is doing fine with my hack.

I used mmc3 so I could perform a bankswap routine, I was unable to do it within mmc1. Regardless of my player 2 functions being withn sram, sram isnt working within nestopia. I added the wram code at the beginning of the reset vector, and it just didnt do anything. So I dont know why this is happeni...

I hacked the nes version of Tetris, to uae SRAM for its score saving and loading. I also have some player 2 registers that reside within the SRAM. I modified the rom to use MMC3_118. Now my rom works on an actual RetroPak (needs already created .sav for SRAM, it works on Nintendulator, and the lates...

Just wanted to say, with the help of kuja killer, we were able to swap out $C000-FFFF, and I made it so links flying sword dpcm is loaded from the new bank, while the other dpcms are still able to be loaded from the original bank.