nesdev.org

I agree with Tokumaru. I really like 6502 simulator. I use the 6502 simulator to double check small snippets of code to make sure the flags, etc.. are doing what I expect them to be doing. This site is very good. http://www.obelisk.demon.co.uk/6502/ 6502 simulator has contexxtual help but I dont fin...

I think Tyson was taken out of the game due to the rape conviction. This list doesnt have Zelda, but there is a fellow who is recording the contents of factory sealed NES games, so this will give you an idea of what makes certain games complete: Anyways, here's his list. http://www.gamefaqs.com/cons...

My compiler doesnt support this syntax: LDA [AddrLow],y so I had to change it to LDA (AddrLow),y And then when I copied your code into my starting template everything looked fine and all the columns were displayed. Edit- I should mention that 1) I am using FCE Ultra 2) The screen looks different in ...

This is probably my newbie-ist question yet. When you do a bankswitch (like on an UNROM) is there any delay associated with it? I'm 99.9% sure that the only cost is the actual CPU instruction costs (LDA , STA etc..) but I still wanted to check because I know some calls cost a lot more in CPU cycles ...

I meant mapper 0. I just always associate mapper 0 as NROM, and now I see there are other types as well.
Thanks,
Al

I dont know which forum this goes in (hardware, emulator, etc..) but I get the feeling its a pretty newbie question so I'll post it here. I was looking at the ROM for the Port Test Cartridge (halfway down this page) http://www.nesplayer.com/features/test%20carts/test.htm This ROM is treated in iNES ...

I didnt know about Rayman. I noticed that for Yie Ar Kung Fu the enemy body is drawn using background tiles except for certain parts (face, arms, legs). I had thought about doing that (and I may still) but I will need to figure out how many background tiles I can update during a single NTSC Vblank p...

Thanks. I appreciate the info.
Al

I've started writing a basic fighting game and I've quickly realized that my fighters are going to be pretty limited in size and in how many different positions I can create for them. So I'm looking into using 8x16 sprites since I can make them twice as big, and also access both CHR tile banks. I'll...

Hi Tepples, I'm curious about the technical aspects of making the multi-cart. I've never used MMC1 before so I'm only going by what I read in a doc by firebug. I see from your asm code you use 32K bankswitching (bit 3 of register but you do not do this for Zelda. You mentioned something about the Ze...

I cant really help because I've never made FF3. Its probably the hardest or second hardest cart to make (I've also never made Destiny of an Emperor 2 which I believe is even harder to make) Here are some things to try to figure out though: 1) Final Fantasy 3 is TNROM, so you need to figure out how t...

FYI,
I get the jumping around effect when I use a Game Genie with my NES attached to my LCD TV. The same TV that glitches with other 0x0D color palette games (like Sudoku).

Al

That clears things up a lot for me. And it really helps me better understand loopy's document. When I read (and re-read) it before, I had no clue what that temp address was all about. I'll admit, I've been using direct writes to $2006 to reset PPU because I thought it was the preferred way, so now I...

I put this in a separate thread rather than hijack the other onewith my questions. I wish I knew where the PPU addr pointed to after a write to $2000 (I assume its the start of that particular nametable) $2000 does not [directly] change the address at all -- it would still point tot he same place it...

LDA #$00 STA $2006 STA $2006 Just for the record, the "standard" way to set up scrolling before a frame is rendered is through one write to $2000 (to set the name table bits) and two writes to $2005. Using $2006 to set the scrolling is a bit "hacky", and should be avoided unless...