Search found 563 matches
- 23 minutes ago
- Forum: Work Logs & Projects
- Topic: USB Development Cartridge for PS1
- Replies: 1
- Views: 25
Re: USB Development Cartridge for PS1
Nice, such a thing is somehow missing for people without parallel ports. What chipset are you using? Minimum would be a single chip that could both simulate a boot rom stub and manage the usb transfers. Do you have a reset signal implemented for automatically rebooting the console on each upload? 83...
- May 10th, 2024, 7:11 am
- Forum: CD-ROM
- Topic: First LibCrypt CDROM Discovered!
- Replies: 3
- Views: 616
Re: First LibCrypt CDROM Discovered!
What happened? From what I've gathered, the Yaroze consoles were sold via mail order, with only 1000 consoles sold in europe, but more were sold in usa and japan. Apparently Sony did then produce 1000 cdroms with yaroze games, and mailed them to the european Yaroze owners, and people in usa or japa...
- May 9th, 2024, 2:29 am
- Forum: Research
- Topic: CHD Disk Image Format (MAME)
- Replies: 75
- Views: 87511
Re: CHD Disk Image Format (MAME)
The WIN32 version has found a new way to make it won't work: v0.265 now says missing KERNEL32.DLL:GetModuleHandleExW. For Zstandard , a sample CHD file nice, like those posted above for other methods. All those extra compression methods are getting quite annoying (but maybe I'll like it better if it...
- May 8th, 2024, 11:22 am
- Forum: CD-ROM
- Topic: First LibCrypt CDROM Discovered!
- Replies: 3
- Views: 616
First LibCrypt CDROM Discovered!
Until today, the oldest known LibCrypt'ed CDROM appears to have been MediEvil. But there's another older title... http://redump.org/disc/45854/ SLED-01340 (EXE date 03 Jun 1998) Net Yaroze Demo Disc (EUR) http://redump.org/disc/592/ SCES-00311 (EXE date 05 Aug 1998) MediEvil (EUR) The Yaroze demo di...
- May 7th, 2024, 12:55 am
- Forum: Programming/CPU
- Topic: What is ECOFF?
- Replies: 4
- Views: 714
Re: What is ECOFF?
Thanks. In general, COFF could be a raw .EXE file, or a linker .OBJ file. I don't know how the Yaroze files fit in though... if you remember how it works, maybe you could answer some questions: Basically, you load (and execute?) the "libps.exe" file, and then load and execute the "yar...
- May 6th, 2024, 8:12 am
- Forum: Programming/CPU
- Topic: What is ECOFF?
- Replies: 4
- Views: 714
What is ECOFF?
The PSX-SDK Programmer Tool CDROM contains some COFF files, for example CLEANMEM extended MIPS COFF (with 38h-byte optional "a.out" header) METROWER\*.O extended MIPS COFF (with 38h-byte optional "a.out" header, and big-endian headers) EMU387 standard I386 COFF (with 1Ch-byte opt...
- May 3rd, 2024, 6:51 am
- Forum: Hardware
- Topic: DTL-H2x00 on Win2k/XP ?!?
- Replies: 1
- Views: 1497
Re: DTL-H2x00 on Win2k/XP ?!?
To make it a bit more clear what you are talking about, here is what you had posted in the other thread: With the great Pikuma tutorial for PS dev i setup my PS Dev PC new. Im looking to use the h2500 with the best option for IDE and debugger. ATM i using the Code Warrior release 5 with update DECI ...
- May 1st, 2024, 12:19 pm
- Forum: Input/Output
- Topic: H2500 SN Bios Flash
- Replies: 4
- Views: 1152
Re: H2500 SN Bios Flash
Going by the http://www.psxdev.net/forum/viewtopic.php?f=69&t=56 BIOS Collection thread there aren't any known DTL-H2500 bioses, but ... Going by the above posts there are at least three DTL-H2500 bioses... - a SN bios - the DECI - H25bios Does somebody know where those BIOSes come from, are the...
- April 27th, 2024, 11:50 pm
- Forum: Input/Output
- Topic: H2500 SN Bios Flash
- Replies: 4
- Views: 1152
Re: H2500 SN Bios Flash
Can't help there. But I am curious: What is in those memory chips? As far as known, the DTL-H2500 has two memory chips, IC807-2 32pin MX 27C1000MC-90 (PROM) IC808 32pin F 29F040A-90 (FLASH) I assume the 512Kbyte FLASH is equivalent to the BIOS/Kernel in retail consoles, perhaps with some modificatio...
- April 24th, 2024, 6:49 am
- Forum: Research
- Topic: can mix 2 PS1 game CD in one iso image?
- Replies: 2
- Views: 968
Re: can mix 2 PS1 game CD in one iso image?
Could work. But if you have to ask how, then you probably can't do it, not without knowledge about software development and cdrom mastering. The best way would be to add data compression, and see if you can squeeze everything on a regular cdrom. With the HED/CDF filesystem(s) in Parasite Eve 2, that...
- April 22nd, 2024, 9:52 pm
- Forum: General Chat & Messaging
- Topic: Someone use my profile
- Replies: 5
- Views: 1206
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...
- April 22nd, 2024, 4:55 am
- Forum: General Chat & Messaging
- Topic: Someone use my profile
- Replies: 5
- Views: 1206
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...
- April 21st, 2024, 11:26 am
- Forum: General Chat & Messaging
- Topic: Differences between EDC/Anti-modchip/LibCrypt?
- Replies: 4
- Views: 970
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.
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.
- April 21st, 2024, 10:41 am
- Forum: General Chat & Messaging
- Topic: alternative to Redump PSX page
- Replies: 2
- Views: 716
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.
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.
- April 19th, 2024, 11:21 pm
- Forum: General Chat & Messaging
- Topic: Differences between EDC/Anti-modchip/LibCrypt?
- Replies: 4
- Views: 970
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).
Libcrypt uses bad CRC16's in the sub-channels, that require a .SBI or .SUB file (or other sub-channel dumps).
- April 11th, 2024, 11:35 pm
- Forum: Research
- Topic: New SPU Findings and Questions
- Replies: 0
- Views: 781
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...
- 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: 836
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 ?
- April 11th, 2024, 5:29 am
- Forum: General Chat & Messaging
- Topic: Is it possible to use a PSone as a Dev Console?
- Replies: 6
- Views: 1593
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.
Gameshark cdrom might work, too. Although when saying exploitable game disc, I did of course mean a game disc, not that gameshark disc.
- April 10th, 2024, 7:53 pm
- Forum: General Chat & Messaging
- Topic: Is it possible to use a PSone as a Dev Console?
- Replies: 6
- Views: 1593
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...
- April 9th, 2024, 9:01 pm
- Forum: General Chat & Messaging
- Topic: Is it possible to use a PSone as a Dev Console?
- Replies: 6
- Views: 1593
Re: Is it possible to use a PSone as a Dev Console?
With or without soldering?