Search found 356 matches

by aquasnake
Mon Jun 27, 2022 4:03 am
Forum: NES Hardware and Flash Equipment
Topic: KrzysioCart - Home made cartridge that support>80% NES games
Replies: 35
Views: 29810

Re: KrzysioCart - Home made cartridge that support>80% NES games

Russians think differently from you. you would have to convince the entire russian community to want that. there they have no problem sharing all source - but that has to do with your doubt. as Russians are people with no discretion from non-open source projects. the Chinese who live next door take...
by aquasnake
Sun Jun 26, 2022 5:53 am
Forum: NES Hardware and Flash Equipment
Topic: REVERSE Engineering [ KID Dracula ] VRC4e Mapper 23
Replies: 14
Views: 688

Re: REVERSE Enginer [ KID Dracula ] VRC4

It is also possible to make a copy of the Mona Lisa's smile, which is becoming more and more oxidized and discolored, but it cannot be forged as an original or even as a commercial act



It can be used commercially if printed materials rather than collectibles are marked as plane figure
by aquasnake
Sun Jun 26, 2022 5:38 am
Forum: NES Hardware and Flash Equipment
Topic: KrzysioCart - Home made cartridge that support>80% NES games
Replies: 35
Views: 29810

Re: KrzysioCart - Home made cartridge that support>80% NES games

Do not release sourcecode or schematics any more. There are many copycats around, especially in China, you konw for this to happen I would have to delete the nes-wiki - :shock: sources in github have been on the net for decades that's bullshit you say. I even have boards with ax52xx and aliexpress ...
by aquasnake
Thu Jun 23, 2022 9:45 pm
Forum: NES Hardware and Flash Equipment
Topic: KrzysioCart - Home made cartridge that support>80% NES games
Replies: 35
Views: 29810

Re: KrzysioCart - Home made cartridge that support>80% NES games

Do not release sourcecode or schematics any more.

There are many copycats around, especially in China, you konw
by aquasnake
Fri Jun 17, 2022 7:03 pm
Forum: NESdev
Topic: CRC routines as PRNGs
Replies: 50
Views: 22679

Re: CRC routines as PRNGs

static const unsigned char rnd_list[] = { 0xfe, 0xc9, 0xd4, 0x45, 0xd8, 0xf6, 0x4e, 0x89, 0x3a, 0x1b, 0x36, 0x16, 0xbd, 0xc5, 0xc1, 0x73, 0xdb, 0xb2, 0xda, 0xcd, 0x3a, 0x7e, 0x97, 0x64, 0x22, 0x01, 0x1f, 0x87, 0x48, 0xb5, 0xc7, 0xdd, 0x90, 0xe4, 0xc4, 0x6f, 0xe1, 0x95, 0x8f, 0x29, 0xbd, 0x6b, 0x49,...
by aquasnake
Fri Jun 17, 2022 6:43 pm
Forum: NESdev
Topic: CRC routines as PRNGs
Replies: 50
Views: 22679

Re: CRC routines as PRNGs

u16 crcFast(void *src, u16 len) {

u8 *ptr8 = (u8 *) src;
u8 crc1 = 0;
u8 crc2 = 0;

while (len--) {
crc1 += *ptr8++;
crc2 = (crc1 + crc2);
}

return (crc1 << 8) | crc2;
}

Code extracted from krikzz' project
by aquasnake
Wed Jun 08, 2022 8:55 am
Forum: NES Hardware and Flash Equipment
Topic: Death Complex UNROM512 mapper30 does not work on harware
Replies: 8
Views: 580

Re: Death Complex UNROM512 mapper30 does not work on harware

Mapper30 has two sub mappers. One is the superset of unrom, but the bank bit width is increased to reach the switching range of 512K. The second has a register bit with single screen mirroring, which is incompatible with uxrom. However, heuristic judgment can be used instead of allocating the sub ma...
by aquasnake
Wed Jun 08, 2022 2:26 am
Forum: General Stuff
Topic: Anyone has a real NTSC Incredible Crash Test Dummies cart?
Replies: 59
Views: 94051

Re: Anyone has a real NTSC Incredible Crash Test Dummies cart?

I still want to say that the design of the simplified(Acclaim, JY company) prescaler is problematic. It can probably adapt to the NTSC PPU (1/4 system clock), but on the dendy or PAL models, it may not be able to synchronize accurately (obtain three consecutive M2 rising pulses for the correction of...
by aquasnake
Mon Jun 06, 2022 12:47 am
Forum: NES Hardware and Flash Equipment
Topic: interesting cartridge 512in1
Replies: 10
Views: 786

Re: interesting cartridge 512in1

mapper268: coolboy or pocketgames/mindkids BLOB(MAPPER268) + PRG ROM + CHR RAM + SAVE RAM(optional) also see my profile picture :lol: I was very interested in the converted rom chip n dale. because this is very interesting to make 3in1 COLBOYwould be from cluster M? do you have some roms converted ...
by aquasnake
Sun Jun 05, 2022 7:53 pm
Forum: NES Hardware and Flash Equipment
Topic: interesting cartridge 512in1
Replies: 10
Views: 786

Re: interesting cartridge 512in1

I was very interested in the converted rom chip n dale. because this is very interesting to make 3in1 COLBOYwould be from cluster M? do you have some roms converted to mmc3? for me to pass? A bad news is that the conversion is basically manual hacking, and there is no batch conversion tool Unless t...
by aquasnake
Sun Jun 05, 2022 7:32 pm
Forum: NES Hardware and Flash Equipment
Topic: interesting cartridge 512in1
Replies: 10
Views: 786

Re: interesting cartridge 512in1

The highest outter PRG address bit of 6023a is A24, so it can only support up to 32MB. They use 64MB BGA particles only because other packages NOR flash with high-density have been discontinued The timing of TSOP56 package Spansion NOR flash is very poor. In other words, the leakage current is high ...
by aquasnake
Sun Jun 05, 2022 7:17 pm
Forum: NES Hardware and Flash Equipment
Topic: interesting cartridge 512in1
Replies: 10
Views: 786

Re: interesting cartridge 512in1

these are the MMC3 convertions

Chip to Dale no Daisakusen (J) [p1][!].nes

Chip to Dale no Daisakusen 2 (J) [hM04].nes
by aquasnake
Sun Jun 05, 2022 5:25 am
Forum: NES Hardware and Flash Equipment
Topic: interesting cartridge 512in1
Replies: 10
Views: 786

Re: interesting cartridge 512in1

mapper268: coolboy or pocketgames/mindkids

BLOB(MAPPER268) + PRG ROM + CHR RAM + SAVE RAM(optional)

also see my profile picture :lol:
by aquasnake
Sat Jun 04, 2022 10:40 pm
Forum: NES Hardware and Flash Equipment
Topic: Differences of various PPU CPUs in Famiclones
Replies: 7
Views: 566

Re: Differences of various PPU CPUs in Famiclones

darleiv wrote: Wed Jun 01, 2022 12:43 pm in Brazil we use this one in the photo. very good

cpu_ppu_combinations.gifUAX.jpg
A: Famicom or NTSC Famiclone

B: Early days Dendy(before 1990)

C: Dendy

there's another solution that is Hong Kong or Brazil Version Dendy(PAL-60)
by aquasnake
Sat Jun 04, 2022 11:58 am
Forum: NESdev
Topic: In Search of 6502/Turbo Game Doctor 6M+ Hacking Expert.
Replies: 30
Views: 10897

Re: In Search of 6502/Turbo Game Doctor 6M+ Hacking Expert.

By the way, I have implemented the FDS multicart. Regardless of how many disk sides the original image has, the multicart can combine hundreds of fds images and automatically swap disk sides (enumeration starts from disk 0 and side A). This project took me half a year to develop. However, the physic...