Search found 22130 matches

by tepples
Sat Mar 06, 2021 5:51 pm
Forum: Homebrew Projects
Topic: [DEV - DONE] Nintendo World Championships 1990 Competition Cartridge NES - PERFECT REPRO
Replies: 13
Views: 4102

Re: [DEV - DONE] Nintendo World Championships 1990 Competition Cartridge NES - PERFECT REPRO

I seem to remember retroUSB's NWC repro putting "Reproduction Cartridge" on the label where one might expect "Competition Cartridge".
by tepples
Sat Mar 06, 2021 10:26 am
Forum: SNESdev
Topic: [demo] SNES Sonic
Replies: 189
Views: 88381

Re: [demo] SNES Sonic

Nintendo used "Power Processing" in print comparison ads such as "Smashing the Myth About Speed and Power" . "Power Processing" in the ad refers specifically to three things: HDMA affecting things other than BGxHOFS, background mode 7, and color math. It appears Nintendo was choosing specific hardwa...
by tepples
Fri Mar 05, 2021 5:23 am
Forum: 2020 NESdev Competition
Topic: Trouble at 2a03
Replies: 5
Views: 418

Re: Trouble at 2a03

3. The buttons are laid out so you can hold down the strafe button and press shoot in the same button grip as the common hold run and press jump. I noticed the streamer who played it wasn't strafing, do you remember if you did? Compare the two modes of Smash TV . In the arcade, it was a twin-stick ...
by tepples
Fri Mar 05, 2021 5:16 am
Forum: NES Graphics
Topic: Do colored borders bother you?
Replies: 17
Views: 452

Re: Do colored borders bother you?

On 16:9 display, underscan at left and right is common.

Concentration Room suffers from this, as it uses white as the common color for reasons related to limits of my tooling in that era.
by tepples
Thu Mar 04, 2021 2:32 pm
Forum: NES Graphics
Topic: Do colored borders bother you?
Replies: 17
Views: 452

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: 540

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: 235

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: 540

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: 56
Views: 2205

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: 2074

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: 758

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: 758

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: 1475

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: 56
Views: 2205

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: 56
Views: 2205

Re: Need guidance with nes to snes.

The equivalent to turning everything off is writing a negative value ($80-$FF) to brightness ($2100).