Search found 11 matches

by KKat
Sat Feb 25, 2017 5:18 pm
Forum: NESemdev
Topic: FCUEX Mapping Button to Multiple Controller Buttons
Replies: 1
Views: 1694

FCUEX Mapping Button to Multiple Controller Buttons

I'd like to map the B button to two different buttons on my USB controller. The reason is that I'm having trouble holding down the B button to charge the Mega Buster in Mega Man 5 while still pressing the A button to jump. Is there a way to do this?

KKat
by KKat
Wed Oct 29, 2014 7:03 am
Forum: NESemdev
Topic: FCEUX for Mac OS (Mavericks)
Replies: 2
Views: 1834

FCEUX for Mac OS (Mavericks)

Can someone please point me to instructions for building FCEUX for Mac OS (Mavericks)? The directions on the FCEUX site say to use Macports, but after installing the required dependencies, I can't find the actual FCEUX port (i.e. "sudo port install fceux" returns "port not found"). Do I need to buil...
by KKat
Tue Jun 03, 2014 2:37 am
Forum: NES Hardware and Flash Equipment
Topic: Jumper for NES Controller Port
Replies: 3
Views: 2100

Re: Jumper for NES Controller Port

I mean the ones on the other side (attached to the PCB in the picture). Do they make jumpers that size (I haven't heard of PATA laptop hard drive pins)?

Thanks,

KKat
by KKat
Tue Jun 03, 2014 12:42 am
Forum: NES Hardware and Flash Equipment
Topic: Jumper for NES Controller Port
Replies: 3
Views: 2100

Jumper for NES Controller Port

I have an NES controller port like the one pictures here (minus the wires): http://www.battlenerds.com/wp-content/uploads/bpfattach/img_1347.jpg I'm trying to wire it to my BASIC Stamp microcontroller to control a servo, and the standard jumper wires don't fit the pins. I'm pretty new to electronics...
by KKat
Thu Mar 27, 2014 8:58 am
Forum: NESdev
Topic: NESASM Bank pseudo-op
Replies: 11
Views: 3615

Re: NESASM Bank pseudo-op

Is there any advantage to using banks? In your example, it seems like I could just set the starting addresses with .org without using banks, but I'm not sure how it would work if I was doing bank switching.

KKat
by KKat
Thu Mar 27, 2014 5:56 am
Forum: NESdev
Topic: NESASM Bank pseudo-op
Replies: 11
Views: 3615

NESASM Bank pseudo-op

Can someone explain to me how the NESASM .bank pseudo-op is supposed to work? I think it is overriding my .org statements: I have an .org $FF50 before my boot code, but NESASM is assembling it into an address around $9000. Do I have to explicitly write ".bank 1" to have it assemble correctly? Is the...
by KKat
Wed Oct 23, 2013 12:57 pm
Forum: NES Hardware and Flash Equipment
Topic: PPU Design
Replies: 16
Views: 3847

Re: PPU Design

Thanks for all of the great replies. I had no idea that they just cut the trace on the 2A03 to get around the patent! Is this a common practice? I would be really pissed if someone did that to a processor I designed in order to avoid paying for it, but if it is technically legal, then I can see why ...
by KKat
Wed Oct 23, 2013 11:22 am
Forum: NES Hardware and Flash Equipment
Topic: PPU Design
Replies: 16
Views: 3847

PPU Design

Is the PPU a completely custom chip, or is it based on an existing chip (like the 2A03 is based on the 6502)? Also, out of curiosity, why didn't Nintendo just use the 6502? I would think a custom chip would cost more to manufacture, and (as I understand it) the only difference is that the 6502 has a...
by KKat
Mon Oct 21, 2013 11:21 am
Forum: Newbie Help Center
Topic: What Does NESASM .Bank Directive Do?
Replies: 3
Views: 1977

Re: What Does NESASM .Bank Directive Do?

Thank you both: that was what I had suspected.

KKat
by KKat
Mon Oct 21, 2013 8:01 am
Forum: Newbie Help Center
Topic: What Does NESASM .Bank Directive Do?
Replies: 3
Views: 1977

What Does NESASM .Bank Directive Do?

What does the .bank directive do in NESASM? I know that it specifies the current 8 KB ROM bank, but I'm not sure what this means. Is a ROM bank similar to a segment, with it's own origin? If so, could I use the SEG directive in a non-NES-specific assembler like DASM to assign banks? I like how the N...
by KKat
Wed Oct 16, 2013 7:57 am
Forum: Newbie Help Center
Topic: PRG-ROM Memory Loading Location
Replies: 2
Views: 1347

PRG-ROM Memory Loading Location

I'm confused about where the NES loads the PRG-ROM, and how to set the origin correctly. I downloaded a "Hello,World" program from another thread in this forum. In this program, the origin of the Main procedure is at $8000. However, when I load the program in FCEUX and look at the debug screen, ther...