Search found 177 matches

by albailey
Tue Jul 03, 2012 9:58 am
Forum: Newbie Help Center
Topic: CC65 syntax related question (not CA65)
Replies: 2
Views: 1296

Thanks.

Thats cleaner than how I was doing it.

I had been writing functions to return addresses, etc..

Al
by albailey
Tue Jul 03, 2012 8:41 am
Forum: Newbie Help Center
Topic: CC65 syntax related question (not CA65)
Replies: 2
Views: 1296

CC65 syntax related question (not CA65)

I've coded for years in CA65 and after seeing some amazing work done using CC65, I've decided to try my hand at it. However I have encountered some problems in trying to convert CA65 ASM syntax into something CC65 likes. For now, my workaround has been to make ASM libraries and just call those any t...
by albailey
Mon Apr 30, 2012 1:04 pm
Forum: General Stuff
Topic: Thank you Koitsu for all the efforts you made
Replies: 26
Views: 7364

I also wish to give a heartfelt thank you to Koitsu.
Al
by albailey
Fri Mar 16, 2012 8:12 am
Forum: NESdev
Topic: Programming NES games in C article
Replies: 58
Views: 26559

Shiru, do you have the source code anywhere for the runtime.lib code? Namely, I am interested in seeing what popa and popax do. I noticed when looking at the code for some of the neslib.s (I was looking at oam_spr) routines that there are lots of calls to "jsr popa" because that call takes 4 argumen...
by albailey
Fri Dec 09, 2011 7:33 am
Forum: Homebrew Projects
Topic: Nomolos: Storming the Catsle
Replies: 67
Views: 44884

Looks good.
Congrats and well done.

I am planning on doing something along the same feel, but your project is lightyears ahead of mine.

Al
by albailey
Mon Oct 24, 2011 6:59 am
Forum: NESemdev
Topic: [My emulator] Graphics glitches - SuperMarioBros
Replies: 44
Views: 11653

I'd just like to thank you guys for the responses to this post. Based on some of the answers, I was able to fix my emulator to finally show SMB title screen. I had already known about the 1 byte read delay, but for reasons I cannot fathom, I was taking the address and masking it to be 0x2000-0x3FFF ...
by albailey
Thu Jul 21, 2011 7:05 am
Forum: Homebrew Projects
Topic: A simple sprite demo for teaching
Replies: 21
Views: 26339

Well done.
by albailey
Mon Jun 13, 2011 9:18 am
Forum: Newbie Help Center
Topic: Common problems when running on an actual NES?
Replies: 26
Views: 5864

One problem that hit me and tool me a while to fix was related to doing a Sprite DMA late in vblank. It was invoked during VBlank, but AFAIK the entire operation did not complete during VBlank. On real hardware (and Nintendulator) my sprites did not show up. On FCEU, which was my default emulator, t...
by albailey
Wed Jun 08, 2011 5:17 pm
Forum: NESemdev
Topic: How do you find bugs in your emulator?
Replies: 32
Views: 8012

I tried running lots of different test roms. I found that I might pass a test, then implement something new (like IRQ) and end up breaking those earlier ROMs. Then I'd add APU (and its IRQ) and re-break things again. Galaxian and Super Mario Bros (title screen) are 2 games I could never diagnose. Ma...
by albailey
Fri May 06, 2011 8:28 am
Forum: NESdev
Topic: Who's planning to enter the competition?
Replies: 23
Views: 5812

I am quite a bit away, but I still think I will have something to submit.
I have no doubt I won't win, but thats not really my motivation anyways.
Al
by albailey
Mon Apr 11, 2011 1:08 pm
Forum: General Stuff
Topic: Is blargg around?
Replies: 42
Views: 8939

In his last post he looked to have decided that he would no longer be posting here.

http://nesdev.com/bbs/viewtopic.php?p=7 ... ght=#70669

If anyone knows how to reach him, please let him know he is missed and his contributions to the NES homebrew scene are deeply appreciated.

Al
by albailey
Tue Mar 22, 2011 8:55 am
Forum: NESemdev
Topic: cpu_timing_test6 by Blargg
Replies: 8
Views: 6067

About halfway down this document it looks to describe most of what is wanted:

http://nesdev.com/6502_cpu.txt

Al
by albailey
Wed Mar 09, 2011 8:02 am
Forum: NESemdev
Topic: Solving NEStress errors
Replies: 10
Views: 6726

So am I understanding that your emulator was able to pass nestest even though the SBC was broken?

Al
by albailey
Tue Jan 25, 2011 10:57 am
Forum: NESdev
Topic: Assembler of your choice
Replies: 38
Views: 16576

Bregalad wrote:Well for now I use java. But I guess I could also do C++ with eclipse, I'd just have to figure how.
I think if you are familiar with java, give ANT a try.
It's similar to a makefile (in my opinion).

Al
by albailey
Tue Jan 18, 2011 9:56 am
Forum: NESdev
Topic: Assembler of your choice
Replies: 38
Views: 16576

I use ca65. I run cygwin and have a certain familiarity with Makefiles. I do not think I use all of its capabilities though. In my early coding days, I was making multiple wrongs and somehow getting a right. I usually just have separate ASM files broken up by functionality and then include them all ...