As far as I'm aware, the only known difference between GSU-1 and GSU-2 revisions is that the maximum memory size increased from 1 MiB to 2 MiB. The other silicon improvements had already landed between MARIO and GSU-1.
Were you envisioning speeding up the game through use of a lot more lookup tables?
Search found 22586 matches
- Fri Mar 22, 2024 9:40 pm
- Forum: NES Graphics
- Topic: Palette collection
- Replies: 5
- Views: 792
Re: Palette collection
2C03, 2C04, and 2C05 produce RGB signal. 2C03 is the "normal" one in the PlayChoice, the four variants of 2C04 have scrambled palettes to copy-protect Vs. System games, most 2C05 have swapped $2000 and $2001 and ID bits in $2002 (also for copy protection), and 2C05-99 is in Sharp's Famicom...
- Fri Mar 22, 2024 6:05 am
- Forum: NESemdev
- Topic: Mesen - Emulator
- Replies: 423
- Views: 253954
Re: Mesen - Emulator
It might have something to do with the fact that Sour uses this topic as Mesen 2's issue tracker instead of using the issue tracker provided by GitHub.
- Fri Mar 08, 2024 1:18 pm
- Forum: General Stuff
- Topic: New York Times issues takedowns over word guessing game
- Replies: 4
- Views: 308
New York Times issues takedowns over word guessing game
Charles Reid's 1973 BASIC game Word was first published in 101 BASIC Computer Games by Digital Equipment Corp. in 1973. AtariArchives.org has a scan of its listing and a sample output . It was adapted to a TV game show called Lingo in 1987 and a Game Boy game of the same name in 1994. This month (Ma...
- Tue Feb 27, 2024 12:58 pm
- Forum: NES Hardware and Flash Equipment
- Topic: NES Peritel cable in scart port doesn't show properly on my TV
- Replies: 5
- Views: 380
Re: NES Peritel cable in scart port doesn't show properly on my TV
A standard 15.625 kHz by 50 Hz video signal (PAL, SECAM, SCART) is interlaced. Even lines of the picture are drawn during one field, and the odd lines between them are drawn 20 milliseconds later in the next field, alternating between even and odd fields to fill all 576 lines. This is called 576-lin...
- Sat Feb 24, 2024 9:21 pm
- Forum: NESdev
- Topic: MMC5 and third pattern nametable
- Replies: 30
- Views: 2323
Re: MMC5 and third pattern nametable
"X=1" means horizontal position equals 1.
In other words, a third consecutive read from the same nametable address means the MMC5 knows that the PPU is performing the kind of memory read that the PPU typically performs during the first two pixels of a scanline.
In other words, a third consecutive read from the same nametable address means the MMC5 knows that the PPU is performing the kind of memory read that the PPU typically performs during the first two pixels of a scanline.
- Wed Feb 21, 2024 4:07 pm
- Forum: General Stuff
- Topic: Public transit
- Replies: 10
- Views: 678
Re: Public transit
SMS is opening a program on an electronic device, tapping keys or a virtual keyboard to enter text in a box, and then hitting a send button. Email is opening a program on an electronic device, tapping keys or a virtual keyboard to enter text in a box, and then hitting a send button. Why the two liv...
- Mon Feb 19, 2024 4:39 pm
- Forum: General Stuff
- Topic: San Guo Zhi discussion
- Replies: 5
- Views: 358
San Guo Zhi discussion
Edit by Fiskbit: This is split off from this thread to avoid distracting from its intended topic. "San Guo Zhi" sounds like "Sangokushi" [三國志], and I'm pretty sure that's on purpose. To what extent do the events of this game overlap those of either Koei's or Namco's Romance of t...
- Sun Feb 18, 2024 1:47 pm
- Forum: General Stuff
- Topic: Public transit
- Replies: 10
- Views: 678
Public transit
Preemptive split from another topic to air grievances about public transit That said, public transit is a thing too Not in my city right now. The bus service here has 58 days of scheduled downtime per year: the 52 Sundays and six major holidays. Today is a Sunday. At least on those days when it is i...
- Fri Feb 16, 2024 9:05 am
- Forum: NESdev
- Topic: Linux on NES
- Replies: 22
- Views: 9835
Re:
Tying related topics together: Oh noes, teh police! HIDE TEH LUNIX!!!11 True, LUnix is not Linux, but could it or Contiki 1.x be made to run well on a RAM cart like the PowerPak? I guessed right. Nearly a decade and a half later, someone ported LUnix. The 9-minute video by decrazyo ( its transcript ...
- Thu Feb 08, 2024 8:57 am
- Forum: NESdev
- Topic: WideNES proposal for cross-releasing NES games on modern platforms
- Replies: 15
- Views: 1550
Re: WideNES proposal for cross-releasing NES games on modern platforms
One thing not detailed here is that some games will play differently with widescreen. Lidnariq did the obvious case, where 4:3 viewers will see less than the 16:9 viewers will. But the one not mentioned is things like spawning enemies. A good comparison case would be Rockman 11 vs. its earlier 4:3 ...
- Wed Feb 07, 2024 6:37 pm
- Forum: SNESdev
- Topic: Two separate moving objects out of one background?
- Replies: 23
- Views: 1828
Re: Two separate moving objects out of one background?
If anything, I'd suggest seeing if a program can use wai to synchronize to within a pixel or two after a horizontal interrupt.
- Sun Feb 04, 2024 7:30 pm
- Forum: NESdev
- Topic: WideNES proposal for cross-releasing NES games on modern platforms
- Replies: 15
- Views: 1550
Re: WideNES proposal for cross-releasing NES games on modern platforms
Now we're considering making it 352 pixels wide, which is 1. a bit wider (so less black border) and 2. a multiple of 32 pixels wide for a whole number of attribute bytes. And the case for moving high X to bit 4 is reasonable. Padding some existing games to 352×224 and putting them on a 720p screen m...
- Sat Feb 03, 2024 9:32 am
- Forum: NESemdev
- Topic: Best emulator approach for the long-run: ROM metadata database? Heuristics? Both?
- Replies: 11
- Views: 1181
Re: Best emulator approach for the long-run: ROM metadata database? Heuristics? Both?
[This may make slightly less sense in light of a post that was deleted.] In the case of NES 2.0, there is one correct header for each combination of cartridge board behavior and memory sizes, and one cartridge board for each set of PRG ROM and CHR ROM contents. Thus whether it's even possible to enf...
- Sat Feb 03, 2024 5:44 am
- Forum: NESdev
- Topic: is there a program that converts bmp's to 32 color attribute squares?
- Replies: 6
- Views: 611
Re: is there a program that converts bmp's to 32 color attribute squares?
I wrote a command-line tool in Python called savtool.py that converts a 256×240-pixel bitmap and a 32-digit palette string. It converts the image using all four subpalettes and then takes whichever produces the least error for each 16×16-pixel area. It does not handle sprite overlays.