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Its just called Baseball. It's possible the rom is from that game-genied cart but mine is a normal nrom.

Lloyd Gordon wrote:What's the number of bytes in the two prg's? Some ROM's have a bit of other stuff, like the title or a trainer.

Depending on what I read the chip as it's 32 or 64k. The rom is 16.2k.

I used readnes on a baseball rom to split it into prg and chr. I also ripped the prg chip of the same game off the actual cart. They are nothing alike. They are not even the same size. I played the rom and the cart and they play exactly the same. I tried burning the rom to eprom and I wouldn't play....

Now that you say it, I see that dec was wrong there. I wrote it right on the forum and I guess dec sounded right at the time. It was meant to be more of a pseudo code/English explanation than executable code. Still I based my code off of that and I would have used dec accidentally. So thanks for poi...

For unsigned comparisons, the 'cmp' and 'sbc' instructions set up the carry flag such that 'bcc' means "branch if accumulator was less than memory", and 'bcs' means "branch if accumulator was greater than or equal to memory" Thats wonderful! Why have I net heard of these? So I c...

I love your mini tuts Bregalad! I was thinking of something similar for bg collision. Tepples's post got me thinking a little and something resembling a pseudo code routine has been forming in my head over the day. Something like... yposition minus 8 until negative flag set, incrementing a value eve...

Yes it has bg scroll. Vertical I guess since it goes to the right. Due to lack of originality/creativity, think mario clone basically.

Well of course I need to know both but I think bg cd is more important. Can't exactly fight enemies if you are falling through the floor (castlevania 2).

I feel like I'm taking advantage of you guys(and or girls) by asking so many questions. Feel free to say something if I'm being a bother. Well, I have an uncanny skill at underestimating and overestimating varyingly. Not as bad as my friend who typed "cows" as his source code and expected ...

Well, I got bored and I felt assembly meant a little more than ASCII so I wrote something.

Please Download --> http://www.mediafire.com/?71xuinnmga1

I thought something seemed wrong there. Strange that writing there (in cpu) during vblank offsets sprites. Thanks for setting me straight on that. Really nice to have that working. Now off to edit palettes and name tables.

Cool. I understand name table vs. attribute table allot better now. So 1 byte in attribute is 16 tiles in name and 2 bits in attribute is 4 tiles in name. I still don't understand what to send to $23c0 though. I modified gbaguy's name table loader for attribute like so... ldx #0 load_atribute: lda a...

I have looked at lots of things on the Attribute tables but none of them tell how to use it. I found hardware docs but I didn't find any software explanations. $23C0 is attribute table 0 and every byte controls 4 bg sprites in a square. But how do I interface it? I read the documentation on the NSA ...

I got some basic scrolling and collision detection going but I'm having palette trouble. How to do use multiple palettes on the background? Say I wanted a black and white could, a green bush, a yellow sun and brown ground. How would I make some bg sprites use a different palette from other bg sprite...

It works! Thanks everyone! Before it worked on about 6 out of 10 emus now it works on all of them :D . The only problem is part of the background is missing under Jnes. I assume this will fix it --v If you are drawing tiles to the first name table, be sure to write 0 to $2005 twice (so that X and Y ...