Search found 541 matches

by nocash
Today, 11:25 am
Forum: Work Logs & Projects
Topic: PSX BIOS Dumper
Replies: 24
Views: 62922

Re: PSX BIOS Dumper

One MAX232 chip should work fine for RX, TX, RTS, CTS. I don't know if RTS and CTS are needed or not, but it would be crazy not to connect them as the MAX232 has enough spare pins for that. DTR and DSR are probably not needed (or if they are: You can wire them to "always ready" state, so y...
by nocash
Today, 12:07 am
Forum: Examples (Psy-Q)
Topic: XMPlay Example + Tools
Replies: 9
Views: 34435

Re: XMPlay Example + Tools

The same timing problem than what? Nobody mentioned any timing problems. Anyways, the timing problems I could think of: Vblank accuracy is approx +/-0.001 minutes, but I doubt that even audiophiles could hear differences between 119.999 bpm and 120.001 bpm. PAL vs NTSC have different vblank timings....
by nocash
Yesterday, 1:00 am
Forum: PSXDEV Downloads
Topic: [DOWNLOAD] PlayStation 1 BIOS Collection
Replies: 135
Views: 3824557

Re: [DOWNLOAD] PlayStation 1 BIOS Collection

Cool. Depending on what hardware you have, it might easier/faster to just check if the CRC32 of the BIOS memory does match up with known dumps. For example, in this tool http://www.problemkaputt.de/psx-diag.htm select "General Tests", and it'll compute the CRC32 and display it on the TV sc...
by nocash
March 24th, 2024, 7:45 pm
Forum: PSXDEV Downloads
Topic: [DOWNLOAD] PlayStation 1 BIOS Collection
Replies: 135
Views: 3824557

Re: [DOWNLOAD] PlayStation 1 BIOS Collection

Thanks for the part numbers, I have added them to the http://www.psxdev.net/forum/viewtopic.php?f=70&t=1065 thread
by nocash
March 22nd, 2024, 10:23 am
Forum: Hardware
Topic: [Hardware Mod] 8MB in (PU-18) Retail PSX
Replies: 64
Views: 165818

Re: [Hardware Mod] 8MB in (PU-18) Retail PSX

Okay, I've never tried to buy old chips myself, but there seem to be tons of sites offering that stuff. I don't know how reliable they are, but "can't find" is a bit of a surprise... if that happens, I would try a different search engine, and be sure to include world-wide search results, i...
by nocash
March 21st, 2024, 2:56 pm
Forum: Hardware
Topic: [Hardware Mod] 8MB in (PU-18) Retail PSX
Replies: 64
Views: 165818

Re: [Hardware Mod] 8MB in (PU-18) Retail PSX

Sounds as if you didn't read this, http://www.psxdev.net/forum/viewtopic.php?p=5457#p5457
Or is it some google-that-for-me-but-I-won't-buy-used-parts request?
by nocash
March 19th, 2024, 6:54 pm
Forum: Work Logs & Projects
Topic: Thesis about a PS1 Game Engine
Replies: 12
Views: 2520

Re: Thesis about a PS1 Game Engine

The quote has two things, none of it being of greater importance. There's some half-serious "winner or loser" attitude in there, which may be encouraging to some, and discouraging to other people. Apart from the harsh language, it was just saying that they did have tools that were easy to ...
by nocash
March 19th, 2024, 7:49 am
Forum: Work Logs & Projects
Topic: Thesis about a PS1 Game Engine
Replies: 12
Views: 2520

Re: Thesis about a PS1 Game Engine

I think I misunderstood the meaning behind Bill's quote Looks so. If you still don't understand it: Just give up, you won't understand it no matter what. (That's about what that Will or Bill was trying to say. Perhaps a bit rude, but I guess it's been meant to be a simple, clear, and reasonable adv...
by nocash
March 18th, 2024, 12:23 am
Forum: Graphics/GPU
Topic: TSQ Files?
Replies: 5
Views: 511

Re: TSQ Files?

Thank you! Yes, I think I can imagine why you are considering the TSQ files as not very interesting ; ) I've only got into that stuff because I was wondering what they were talking about in the file formats doc (and especially, my file system viewer did often mis-detect random binaries as possible T...
by nocash
March 16th, 2024, 6:04 pm
Forum: Graphics/GPU
Topic: TSQ Files?
Replies: 5
Views: 511

Re: TSQ Files?

Only TSQ files i've ever heard of are Takara's custom sequence format used by Choro Q Wonderful! . Yeah, that's something else, those TSQ/TVB files seem to be some equivalent to SEQ/VAB audio. I know capcom tested them, maybe used them, it's in the tron bonne leak Cool, that looks right, with all t...
by nocash
March 13th, 2024, 1:47 am
Forum: Graphics/GPU
Topic: TSQ Files?
Replies: 5
Views: 511

TSQ Files?

Does anybody have TSQ files? According to Sony's file formats document, they would contain data for "2D Animation Time Sequences", but I have never seen such files for real. If you can find one - anywhere in retail games, homebrews, programming examples, demos, whatever - please let me know!
by nocash
March 5th, 2024, 7:22 am
Forum: Sound/SPU
Topic: ADSR Behavior Consensus?
Replies: 8
Views: 2210

Re: ADSR Behavior Consensus?

I'm a little confused on exactly how to utilize what I'm seeing! :D Why? Just run the diag.exe in emulators and check if the ADSR graphs are looking right. I haven't tried that, but it would be interesting if the four SPU emulations that you had posted above are actually producing different ADSR gr...
by nocash
February 26th, 2024, 1:44 pm
Forum: Input/Output
Topic: SCPH-1002 BIOS corrupt.
Replies: 11
Views: 30442

Re: SCPH-1002 BIOS corrupt.

I've converted the bios boot gui to EXE format and replaced the cdrom sector loading functions by a fixed logo and licence strings... so I could upload the EXE to the broken console without cdrom drive attached... doing that, it's now capable of properly displaying "Licensed by". Then, whi...
by nocash
February 26th, 2024, 1:18 pm
Forum: Graphics/GPU
Topic: Help with PS1 16bit tim image
Replies: 6
Views: 1563

Re: Help with PS1 16bit tim image

Ah, I thought it was only one "TIM" file, and might exceed 2Mbyte after decrompression. Thanks for changing rar to zip. The tim's in there have all wrong colors, which is somewhat impossible for 16bit direct color. I'd assume that they are 4bit or 8bit (or a mixup thereof). The required pa...
by nocash
February 26th, 2024, 9:55 am
Forum: Graphics/GPU
Topic: Help with PS1 16bit tim image
Replies: 6
Views: 1563

Re: Help with PS1 16bit tim image

That is a rar file, those are very hard to deal with, you would probably need the newest version of the rar software. But even then, given the size, what makes you think that it could contain a tim file???
by nocash
February 25th, 2024, 2:58 am
Forum: Sound/SPU
Topic: What are .SGG and .SFX files?
Replies: 2
Views: 883

Re: What are .SGG and .SFX files?

Look at the file headers, just having the extension is a bit meaningless. .SFX is supposedly short for Sound Effects and could mean anything. There might be some standard used in several games. But I am also sure that several people have used the abbreviation for different file formats. .SGG files a...
by nocash
February 24th, 2024, 2:12 pm
Forum: Input/Output
Topic: SCPH-1002 BIOS corrupt.
Replies: 11
Views: 30442

Re: SCPH-1002 BIOS corrupt.

The "ed by ed" issue seems to be popular on reddit http://www.google.com/search?q=psx+%22ed+by+ed%22+site:www.reddit.com I don't really understand how to browse that webpage... from what I can see, the problem occurs on both PAL and NTSC consoles (despite of the different GUIs), and they d...
by nocash
February 24th, 2024, 1:35 pm
Forum: Work Logs & Projects
Topic: Thesis about a PS1 Game Engine
Replies: 12
Views: 2520

Re: Thesis about a PS1 Game Engine

The boot screen where it is saying "d" and "d" without PS logo, is that because you forgot to include the licence/logo sectors, or is it a hardware glitch (that also happens on retail discs)? And the game engine, are you writing own GTE code, creating your own linked lists, and d...
by nocash
February 23rd, 2024, 4:46 pm
Forum: Input/Output
Topic: SCPH-1002 BIOS corrupt.
Replies: 11
Views: 30442

Re: SCPH-1002 BIOS corrupt.

My oldest SCPH-1002 is now also saying "ed by ed by" instead of "Licensed by" when booting from CDROM. That is, when booting with the built-in BIOS, it does look exactly as in the first picture in first post above, and refuses to boot any further. Cleaning the lens and disc doesn...
by nocash
February 22nd, 2024, 2:36 pm
Forum: Sound/SPU
Topic: ADSR Behavior Consensus?
Replies: 8
Views: 2210

Re: ADSR Behavior Consensus?

Just following up to say a big thank you - this writeup on the ADSR behavior is great - really straightforward compared to most other things I'd seen. Yipieh. I guess it was almost a bit too straightforward, lacking all those expected confusing descriptions ; ) I'm looking forward to your SPU test ...