Search found 553 matches

by nocash
Yesterday, 9:52 pm
Forum: General Chat & Messaging
Topic: Someone use my profile
Replies: 4
Views: 134

Re: Someone use my profile

If someone has used your account - no matter how it was done - that's called hacked. Spam is flooding forums or email inboxes with things like unwanted advertising. First thing is to change your password, and if you have used the same or similar passwords on other sites, also changes those passwords...
by nocash
Yesterday, 4:55 am
Forum: General Chat & Messaging
Topic: Someone use my profile
Replies: 4
Views: 134

Re: Superlative ?asual Dating - Live Women

That's new, the spammers are now hacking existing accounts from real people, instead of creating their own accounts. User "alimadhi", http://www.psxdev.net/forum/search.php?st=0&sk=t&sd=d&sr=posts&author_id=416 Apart from the Dating spam post, the signature (in all other po...
by nocash
April 21st, 2024, 11:26 am
Forum: General Chat & Messaging
Topic: Differences between EDC/Anti-modchip/LibCrypt?
Replies: 4
Views: 148

Re: Differences between EDC/Anti-modchip/LibCrypt?

Anti-modchip is yet something else:
A modchip does simulate the SCEX wobble (which SHOULD only occur in Lead-In area, but many early modchips do simulate that SCEX signal everywhere including in the discs data area).
Anti-modchip protections do check that SCEX does occur ONLY in Lead-In area.
by nocash
April 21st, 2024, 10:41 am
Forum: General Chat & Messaging
Topic: alternative to Redump PSX page
Replies: 2
Views: 74

Re: alternative to Redump PSX page

Is that a question or an announcement?
And what is a archive.org psx redump website?
If you meant http://redump.org/ or http://redump.org/discs/system/psx/ - those aren't down.
by nocash
April 19th, 2024, 11:21 pm
Forum: General Chat & Messaging
Topic: Differences between EDC/Anti-modchip/LibCrypt?
Replies: 4
Views: 148

Re: Differences between EDC/Anti-modchip/LibCrypt?

EDC's are CRC32's inside of the 930h-byte data sectors.
Libcrypt uses bad CRC16's in the sub-channels, that require a .SBI or .SUB file (or other sub-channel dumps).
by nocash
April 11th, 2024, 11:35 pm
Forum: Research
Topic: New SPU Findings and Questions
Replies: 0
Views: 158

New SPU Findings and Questions

SPU Soft Reset If and as long as SPUCNT.bit15=0: All voices are Keyed Off, writes to Key On are ignored, and all voices are forced to ADSR volume=0000h. That is about same as FLG.bit7 on SNES APU (with big thanks to Anomie for rev-engineering the SNES hardware). Unstable 32bit SPU Writes One long-s...
by nocash
April 11th, 2024, 7:15 am
Forum: Sound/SPU
Topic: SQ/BD/HD format documentation on the PS1, and differences versus SMF MIDI and PS2?
Replies: 2
Views: 338

Re: SQ/BD/HD format documentation on the PS1, and differences versus SMF MIDI and PS2?

Is there any documentation for the SQ BD HD format used on PS2 ?
by nocash
April 11th, 2024, 5:29 am
Forum: General Chat & Messaging
Topic: Is it possible to use a PSone as a Dev Console?
Replies: 5
Views: 582

Re: Is it possible to use a PSone as a Dev Console?

I am using cable boot, anyone else knows more about cdrom booting.
Gameshark cdrom might work, too. Although when saying exploitable game disc, I did of course mean a game disc, not that gameshark disc.
by nocash
April 10th, 2024, 7:53 pm
Forum: General Chat & Messaging
Topic: Is it possible to use a PSone as a Dev Console?
Replies: 5
Views: 582

Re: Is it possible to use a PSone as a Dev Console?

It's all working. And can differ on comfort, speed, capacity. Without any soldering, you would need an exploitable game disc, and burn a bootloader to memory card. If you store your game/exe on memcard, too, then it could be max 100 Kbytes. I'd expect that each boot takes about 30 seconds (depending...
by nocash
April 9th, 2024, 9:01 pm
Forum: General Chat & Messaging
Topic: Is it possible to use a PSone as a Dev Console?
Replies: 5
Views: 582

Re: Is it possible to use a PSone as a Dev Console?

With or without soldering?
by nocash
April 3rd, 2024, 7:58 pm
Forum: General Chat & Messaging
Topic: How do PS1 ISO checksums work?
Replies: 6
Views: 1126

Re: How do PS1 ISO checksums work?

All psx sectors are MODE2 sectors, which are usually 930h bytes tall, and contain only 800h bytes of data (or more for audio sectors). So you need to slice your TMD file into 800h byte snippets, and insert those at the correct location in the 930h byte sectors. And then fix the ECC/EDC in the remain...
by nocash
April 3rd, 2024, 7:47 am
Forum: General Chat & Messaging
Topic: How do PS1 ISO checksums work?
Replies: 6
Views: 1126

Re: How do PS1 ISO checksums work?

Thanks -- if I may clarify, what am I looking for, or what am I looking at? Yes, what did you do exactly, and did you run into any specific problems? As by now, your question is a bit unclear. ISO is slang that might refer to "the cdrom filesystem" or "the whole disc image" or &...
by nocash
March 28th, 2024, 11:25 am
Forum: Work Logs & Projects
Topic: PSX BIOS Dumper
Replies: 24
Views: 81780

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
March 28th, 2024, 12:07 am
Forum: Examples (Psy-Q)
Topic: XMPlay Example + Tools
Replies: 10
Views: 45979

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
March 27th, 2024, 1:00 am
Forum: PSXDEV Downloads
Topic: [DOWNLOAD] PlayStation 1 BIOS Collection
Replies: 135
Views: 3871822

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: 3871822

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: 186452

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: 186452

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: 4868

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: 4868

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...