Search found 22126 matches

by tepples
Thu Mar 04, 2021 2:32 pm
Forum: NES Graphics
Topic: Do colored borders bother you?
Replies: 8
Views: 162

Do colored borders bother you?

I'm the lead programmer for an NES game in development, and the fact that the side borders are not black bothers the person to whom I report. The borders stand out about as much as the blue side borders in the title screen of Nintendo's Super Mario Bros. 2 (pictured). smb2title.jpg How many other pe...
by tepples
Mon Mar 01, 2021 7:34 am
Forum: NESdev
Topic: Compilation Of A PDS Game
Replies: 13
Views: 456

Re: Compilation Of A PDS Game

I wrote translators from NESASM to ca65 and from ca65 to ASM6 in Python that you can use for reference.
by tepples
Sun Feb 28, 2021 4:27 pm
Forum: Newbie Help Center
Topic: Completed Nerdy Nights Advanced Tutorials - Next Step To Develop A Platformer?
Replies: 2
Views: 178

Re: Completed Nerdy Nights Advanced Tutorials - Next Step To Develop A Platformer?

How to scroll within the 512 pixel box: Set scroll X to player X, clamped to 0-255 How to scroll bigger: Form a data structure for map data, then draw columns as they're about to scroll into view, as illustrated in Nova the Squirrel https://wiki.nesdev.com/w/images/b/bf/NTS_scrolling_seam.gif Using ...
by tepples
Sun Feb 28, 2021 10:01 am
Forum: NESdev
Topic: Compilation Of A PDS Game
Replies: 13
Views: 456

Re: Compilation Of A PDS Game

If you feed an ordinary CHR to pp1pack, does it come out with what tokumaru has called Codemasters format?
by tepples
Sun Feb 28, 2021 7:05 am
Forum: SNESdev
Topic: Need guidance with nes to snes.
Replies: 54
Views: 1925

Re: Need guidance with nes to snes.

You can DMA from ROM to VRAM, from WRAM to VRAM, or from ROM to WRAM with a fixed source address.

From fullsnes description of $4300:
4-3 A-BUS Address Step (0=Increment, 2=Decrement, 1/3=Fixed) (DMA only)
by tepples
Sat Feb 27, 2021 11:50 am
Forum: 2020 NESdev Competition
Topic: Pong de las Tortugas Ninja Trilogy
Replies: 8
Views: 1994

Re: Pong de las Tortugas Ninja Trilogy

Last I read, ViacomCBS's terms and up-front fees weren't friendly to amateur or small-time professional licensees. I don't remember where I read it, but I vaguely remember 40,000 USD just to open negotiations.
by tepples
Fri Feb 26, 2021 8:46 am
Forum: General Stuff
Topic: question about systems that support PAL60 systems
Replies: 14
Views: 705

Re: question about systems that support PAL60 systems

At baseband (not RF), NTSC-J is so close to NTSC that very little bothers to correct for the relatively small differences in black level, primaries, and white temperature.
by tepples
Fri Feb 26, 2021 5:36 am
Forum: General Stuff
Topic: question about systems that support PAL60 systems
Replies: 14
Views: 705

Re: question about systems that support PAL60 systems

PAL-M is 480 of 525 lines and 60 Hz, as anyone familiar with the history of analogue video in Brazil would be aware. The difference between PAL60 and PAL-M is that PAL-M is a standard using a chroma subcarrier frequency close to NTSC's 3.58 MHz, whereas PAL60 is a nonstandard format using the same 4...
by tepples
Thu Feb 25, 2021 7:09 pm
Forum: 2020 NESdev Competition
Topic: Spacegulls
Replies: 11
Views: 1384

Re: Untitled space bird platformer

If it shows promise to be a worthy spiritual successor to Balloon Kid/Hello Kitty World, I'm all for it.
by tepples
Wed Feb 24, 2021 8:50 am
Forum: SNESdev
Topic: Need guidance with nes to snes.
Replies: 54
Views: 1925

Re: Need guidance with nes to snes.

On Super NES, setting brightness to negative turns rendering off (also called "forced blanking"). I'm not sure I understand what you mean.
by tepples
Wed Feb 24, 2021 8:22 am
Forum: SNESdev
Topic: Need guidance with nes to snes.
Replies: 54
Views: 1925

Re: Need guidance with nes to snes.

The equivalent to turning everything off is writing a negative value ($80-$FF) to brightness ($2100).
by tepples
Tue Feb 23, 2021 8:35 am
Forum: NESdev
Topic: VBCC Optimizing C-compiler now supports NES
Replies: 190
Views: 87760

Re: VBCC Optimizing C-compiler now supports NES

vbc wrote:
Sat Jul 18, 2020 3:48 am
For non-commercial use you can include it without restrictions. For commercial use of vbcc please contact me.
In a request for a license for use of vbcc to build an NES game intended for distribution on cartridge, what information do you require?
by tepples
Mon Feb 22, 2021 6:54 pm
Forum: NES Hardware and Flash Equipment
Topic: Porting mmc5 PPU cycle counter from mister_nes
Replies: 35
Views: 1026

Re: Porting mmc5 PPU cycle counter from mister_nes

Would counting M2s between PPU /RDs work?
by tepples
Sun Feb 21, 2021 3:33 pm
Forum: NES Hardware and Flash Equipment
Topic: Porting mmc5 PPU cycle counter from mister_nes
Replies: 35
Views: 1026

Re: Porting mmc5 PPU cycle counter from mister_nes

Does it require three identical address reads or just several consecutive reads with A13 [redacted]?

EDIT: This comment had a mistake. I was rushed to leave for grocery shopping.
by tepples
Thu Feb 18, 2021 6:14 pm
Forum: NESemdev
Topic: VRC7 discoveries
Replies: 13
Views: 1447

Re: VRC7 discoveries

I'm in contact with SMS Power staff. What change do I need to pass on?