nesdev.org

This thread is really old! Haha over two years old in fact. I would recommend just seeing if you can get some cheap floppy drives from eBay or something and also, make sure that you're using the external power supply with your SF7. Another thing to try is getting an old laptop with a floppy drive bu...

Thanks for the pointers. I have finally finished my semester classes and finals so I should have some more time to work on the compiler. For the lexical analyzer, I'm using Flex and Bison with the ANSI C grammars specified here: http://www.quut.com/c/ANSI-C-grammar-y.html and http://www.quut.com/c/A...

Hi all, It's been a while since I've been to the forum, but I've finished my compiler construction class and really enjoyed building the compiler this semester. I'm thinking about building a C compiler for the SNES from scratch. I know that I could use GCC as a base for the compiler, but the source ...

Yeah, I took a look at tcc-816. It looks like it could use some work. The Google Code page even says that it's buggy and kinda hacked together. :lol: I'll see how I feel about compilers once I finish this semester's class and I may see what I can do for a SNES C compiler. I may even see about a C++ ...

I'm attending Louisiana State University. So far, my classwork hasn't been too exciting since I was mainly finishing all my prereqs for my upper level classes. Now that I'm in my upper level classes, I'm pretty interested in what we'll be doing this semester. Last semester, one of my prereqs for com...

So, I've finally started my MIPS assembly class and compilers class this semester. It should be an interesting semester. Since I'm a computer science major, we won't be going into as much details about the hardware as computer engineers/electrical engineers. I'm looking forward to learning about MIP...

I found another tool called CartSNS that seems to read header information and display it to the console. However, the tool is 16bit and won't run on 64bit operating systems. I tested the program on my old Thinkpad which runs Win98 and it displays nice output. I doubt that it looks up games from a da...

I'm not sure if NSRT's source code is freely available, but I know that it will tell you helpful header information for SNES ROMs. However, I don't know if the header is actually read or if it just identifies the ROM and pulls the information from a database. If NSRT reads the header and gets the in...

If you're able to test your PowerPak with the various different compact flash cards you have on another SNES, I would recommend that for ruling out the PowerPak as being faulty. I thought that my PowerPak didn't work when I first got it. I just had to be patient and wait for a fix in the firmware. S...

Heya, I bought the SNES powerpak a few weeks ago with the 2gb Dane-Elec CF card that comes with it. Sadly, I cant get any of the games to work for more than a few minutes. The cartridge boots fine, seems to copy the selected game without too much trouble. But depending on the game, it either just f...

It's truly amazing to hear such great quality music come from the SNES. Would it be possible to play a song longer than one minute? I realize the rom size would be significantly larger, but it could be done on the PowerPak provided it is less than 128Mbits. I realize 16MB is a lot of data for one so...

Quote: PrintString "\nDivision with remainder: 16/4=" lda #16 sta $4204 ; low lda #16 sta $4205 ; high lda #4 sta $4206 That is 4112/4, or 1028. Thanks for pointing out the error in my code. I've modified the code so that it divides decimal 128 by decimal 32. It waits 16 cpu cycles before...

Shouldn't it be (assuming A is 8-bit): lda #<dividend sta $4204 ; low lda #>dividend sta $4205 ; high lda #divisor sta $4206 ; insert code to wait 16 cycles lda $4214 ; low part of quotient ; do whatever lda $4216 ; low part of remainder ; do whatever Can you explain what the high and low of the di...

I read that it takes 16 cpu cycles to complete a division operation. I also confirmed that it takes 8 cpu cycles to complete a multiplication operation. I'll need to figure out how to print 16bit integers as my current code only prints 8bit integers.

I've been reading about how to do various math routines with 65816 assembly. I've figured out how to add, subtract, and multiply 8bit integers, but division is still stumping me. I'd also like to learn how to work with 16bit integers, but am not sure the best way to approach that. For multiplying in...