Search found 563 matches

by Gilbert
Tue Mar 12, 2024 8:22 pm
Forum: Other Retro Dev
Topic: How many color on some retro console
Replies: 11
Views: 1048

Re: How many color on some retro console

I think the term "fixed colour" is a bit misleading, as most of the consoles can have subpalettes (or, indiced colours if you prefer) chosen from a master/base palette for individual elements (sprites/bg tiles, etc.). Those 54, 512, 32768, etc. numbers you mentioned actually refer to the b...
by Gilbert
Sun Mar 03, 2024 10:40 pm
Forum: NES Hardware and Flash Equipment
Topic: AUX on the Yobo Gameware FC2
Replies: 7
Views: 530

Re: AUX on the Yobo Gameware FC2

Just some random guess. Maybe it can use generic USB joypads? Could even use it as a third controller like the expansion port of the original Famicom? I recently got a handheld "gameboy style" Famiclone for dirt cheap, mainly as a curiosity item (with on board crap 500-in-1 multicart), wit...
by Gilbert
Wed Feb 28, 2024 7:23 pm
Forum: NESemdev
Topic: Super Mario Bros. starts in invalid world
Replies: 24
Views: 13960

Re: Super Mario Bros. starts in invalid world

It's been more than 14 years since this thread was last active... and the problem had been settled. It was because of a bad dump (hack?) of the ROM which only worked when RAM was initialised to zero, otherwise the game will start at an incorrect world. The correct dump doesn't have this problem. If ...
by Gilbert
Mon Feb 19, 2024 8:27 pm
Forum: General Stuff
Topic: San Guo Zhi discussion
Replies: 5
Views: 358

Re: [NES] San Guo Zhi: Chi Bi Zhi Zhan - need help with hacking text output

I've never read the original comic books, but as the author was well known for his "hot blooded" over the top works, I'll expect the story follows the original novel very loosely, so even the ridiculous "Mongolian localisation" in the English version may not seem off. Anyway, bac...
by Gilbert
Mon Feb 19, 2024 7:26 pm
Forum: General Stuff
Topic: San Guo Zhi discussion
Replies: 5
Views: 358

Re: [NES] San Guo Zhi: Chi Bi Zhi Zhan - need help with hacking text output

"San Guo Zhi" IS 三國志, pronounced in Mandarin. "Sangokushi" is just the same thing in Japanese. It was an epic Chinese historical novel (sometimes translated to Romance of the Three Kingdoms in English), VERY popular in Japan. Koei and Namco's games (including their simulation gam...
by Gilbert
Sun Feb 04, 2024 6:26 pm
Forum: Newbie Help Center
Topic: Failing to understand some things
Replies: 6
Views: 551

Re: Failing to understand some things

We have a nice Wiki, just check out what each PPU register does there.
It also has "nice diagrams" detailing what each bit of the registers does.
by Gilbert
Sun Feb 04, 2024 8:34 am
Forum: Newbie Help Center
Topic: Trouble animating sprite
Replies: 16
Views: 1139

Re: Trouble animating sprite

(Ninja'd by nesrocks, but we're talking about the same thing anyway.) I haven't (and won't) downloaded your attachment to check it out, but if the code snippet you have posted are indeed consecutive lines that are run in every loop of your real code it can never work. A break down: LDY #$00 ; <-- Y ...
by Gilbert
Thu Jan 25, 2024 6:59 pm
Forum: General Stuff
Topic: Where can you find 8KB CHR files?
Replies: 3
Views: 477

Re: Where can you find 8KB CHR files?

Just split from the game ROMs? Edit: In particular, you can actually ab use your favourite assembler to get the work done, instead of using other scripting languages (LUA, PYTHON, etc.) or tools. For example, the following works fine in ASM6. It's only one line (the last line). Make sure you read th...
by Gilbert
Tue Jan 23, 2024 7:17 pm
Forum: General Stuff
Topic: Can you start from scratch and create a version of Super Mario Bros. and distribute the ROM?
Replies: 25
Views: 1848

Re: Can you start from scratch and create a version of Super Mario Bros. and distribute the ROM?

I would not intend to use code from the already-available disassembly because of the 8KB graphics dump that it uses. Even if you use the already-available disassembly, you do not need to use the original graphics dump. You can hack change all the graphics to your liking, so there will not be any le...
by Gilbert
Sat Jan 20, 2024 9:35 pm
Forum: Newbie Help Center
Topic: ASM6 Operands?
Replies: 11
Views: 1104

Re: ASM6 Operands?

Instruction mnemonics do not vary across assemblers. They should not vary, at least normally, as the mnemonic names were officially set by the designers of the CPU (save for some specific requirements in certain assemblers, e.g. most of the assemblers on the Apple ][ restricted the letters used to ...
by Gilbert
Thu Jan 18, 2024 8:27 pm
Forum: General Stuff
Topic: NES rereleases and hardware clones
Replies: 10
Views: 1473

Re: NES rereleases and hardware clones

The FDS BIOS was developed by Nintendo R&D2 . It would be possible that they... err... borrowed codes from other sources, especially those parts that involve disk I/O though. Fun fact. While "Famicom" is an officially accepted abbreviation of the product name "Family Computer"...
by Gilbert
Wed Jan 17, 2024 10:30 pm
Forum: General Stuff
Topic: NES rereleases and hardware clones
Replies: 10
Views: 1473

Re: NES rereleases and hardware clones

Sharp is a good friend of Nintendo (a lot of the LCD screens of Nintendo handheld systems since at least the Game&Watch era were manufactured by Sharp). Sharp is also a good friend of Hudson Soft (Hudson Soft wrote a lot of the system software for Sharp's X series of computers, including the X-6...
by Gilbert
Tue Jan 16, 2024 11:09 pm
Forum: General Stuff
Topic: My PC-9801 Series Documentation Project/Blog Post
Replies: 8
Views: 1570

Re: My PC-9801 Series Documentation Project/Blog Post

Wow! Seeing how huge that blog post is shows how much research you have already done on the target (I'm not in the mood of reading wall of text at the moment though). Japan used to isolate itself and produce their own stuff that only they themselves use, which were incompatible with anything else in...
by Gilbert
Sat Jan 13, 2024 1:31 am
Forum: General Stuff
Topic: Legality of Security Codes in Retro Games
Replies: 23
Views: 4223

Re: Legality of Security Codes in Retro Games

Also, this: Famicom: Lockout chip (needs special chip on cartridge) A bit nitpicking, should write "NES" instead. The original Famicom (and any of the later revisions) never had a lock out chip to begin with. I've heard that later revisions of the NES (when they're changed to top loading l...