Search found 177 matches

by albailey
Mon Jun 16, 2008 8:50 am
Forum: Newbie Help Center
Topic: CA65 syntax question: Forcing absolute addressing mode?
Replies: 6
Views: 4923

Excellent. That worked perfectly Disch.

Thanks everyone.
Al
by albailey
Sat Jun 14, 2008 7:14 pm
Forum: Newbie Help Center
Topic: CA65 syntax question: Forcing absolute addressing mode?
Replies: 6
Views: 4923

CA65 syntax question: Forcing absolute addressing mode?

I am using CA65 and I have a piece of code like this: STA $00D2 which should compile as : [8D][D2][00] but instead CA65 internally makes an optimization for me and treats the code as if I had typed this: STA $D2 and therefore it compiles as: [85][D2] I know that in 99% of cases I'd be happy with CA6...
by albailey
Tue Apr 29, 2008 7:03 am
Forum: Newbie Help Center
Topic: stuck
Replies: 18
Views: 6836

I dont really trust my code, but I also reset the PPU address and scrolling before turning back on rendering.

LDA $2002 ; resets the latches
LDA #$00
STA $2005
STA $2005
STA $2006
STA $2006

Let me know if this helps (or not)
Al
by albailey
Mon Mar 31, 2008 2:38 pm
Forum: NES Hardware and Flash Equipment
Topic: EPROM Programmer, Problems Reading & Writing
Replies: 5
Views: 2934

I bought a Top2005 programmer. It doesnt pester you with dip switches either but I've encountered problems with it too. My Willem dual worked OK with all my EPROM and Flash chips except for some 2 Mb Flash chips. I tried on the willem and mcumall forums and they said they thought the chips were bad ...
by albailey
Mon Mar 31, 2008 11:02 am
Forum: NES Hardware and Flash Equipment
Topic: EPROM Programmer, Problems Reading & Writing
Replies: 5
Views: 2934

I own a dual power Willem and on mine only the power is driven by USB, not the data. The data is driven using the parallel port. I'm not sure if yours is the same. Does your programmer have a parallel port on it? If so, maybe there is a way to make sure that the port or the cable are functioning pro...
by albailey
Thu Mar 27, 2008 9:41 am
Forum: Newbie Help Center
Topic: Which guide should I use to make an Earthbound 0 cart?
Replies: 3
Views: 2422

The January 2008 Nintendoage ezine has an article by Bootgod which has step by step instructions for making earthbound repro.

The problem is, back issues of the ezine arent hosted on nintendoage at the moment, so you'd need to ask someone who has a copy of it to send it to you.

Al
by albailey
Thu Mar 27, 2008 9:34 am
Forum: Reproduction
Topic: Where can I get Cart shells?
Replies: 1
Views: 2303

Brian from retrozone is the only place I know of that makes his own casings. If you havent heard from him, check your invoice. I believe he has things like a tracking number, etc.. in there and he doesnt generally respond if the question is already answered in his FAQ (which shipping and tracking is...
by albailey
Wed Feb 20, 2008 9:37 am
Forum: Newbie Help Center
Topic: Debugging
Replies: 6
Views: 3224

I'm certainly no expert but I have found the memory visualization aspect of FCE Ultra very useful. I will often write values to different areas of zero page based on regions of the code I expect to go through. I found this useful for me in figuring out why my joystick routines were not working. Anot...
by albailey
Fri Feb 15, 2008 3:16 pm
Forum: NES Hardware and Flash Equipment
Topic: NES Repair/mods
Replies: 2
Views: 1911

Yeah, if someone attempted to replace the 72 pin connector but didnt hook the plastic piece back under the PCB, then that piece wont stay down after re-assembling the unit.

I accidentally did that to a system I'd given to my sister.

Al
by albailey
Thu Jan 03, 2008 12:06 pm
Forum: nesdevWiki
Topic: Question about the Wiki sample Init Code
Replies: 2
Views: 5654

Thanks.
Al
by albailey
Thu Jan 03, 2008 11:40 am
Forum: nesdevWiki
Topic: Question about the Wiki sample Init Code
Replies: 2
Views: 5654

Question about the Wiki sample Init Code

I was just wondering something. I was looking at someone's code who had based their reset routine off the sample code in the wiki: http://nesdevwiki.org./wiki/index.php/Init_code If you look on the wiki it sets the stack pointer to FF but then the clear mem routine runs which (I believe) clears it t...
by albailey
Wed Jan 02, 2008 1:31 pm
Forum: NESdev
Topic: Graphical woes
Replies: 7
Views: 3202

Is there a link to the NSF sound engine you are using.

With that we can try and figure out what memory to avoid using. If its hosing $0200-$02FF you could have your sprites use a different memory page.

I've never used NSFs.

Al
by albailey
Wed Jan 02, 2008 10:51 am
Forum: NESdev
Topic: Graphical woes
Replies: 7
Views: 3202

Re: Graphical woes

I recall hearing that $0200 should have all $FE's in there instead of $00. When I do that, the graphical things seem to go away, but the triangle wave starts playing low notes for no reason, leading me to believe something's wrong. In your code you are not writing $FE to $0200, you are writing it t...
by albailey
Thu Nov 29, 2007 7:25 am
Forum: NESdev
Topic: Question about bank switching CHR data from PRG RAM
Replies: 45
Views: 11652

I appreciate the suggestions.
I'm going to move ahead and start trying some of them out.

Thanks again.
Al
by albailey
Thu Nov 29, 2007 7:21 am
Forum: Homebrew Projects
Topic: Pitfall!
Replies: 43
Views: 32934

I like it. Its very well done. At first I thought it was busted, but thats just because I had my emulator set to PAL mode.

Have you tried it on a Power Pak?

Al