Search found 574 matches
- June 14th, 2024, 9:55 am
- Forum: Hardware
- Topic: help with raised pin on pu-23
- Replies: 3
- Views: 377
Re: help with raised pin on pu-23
A modchip normally can't damage anything. I'd rather assume that you did have (or still have) produced a shortcut somewhere, wihich is 99% harmless and easy to fix, unless you had shortcut power supply signals. I guees the yellow diamond screen should come up even without cdrom drive attached. At th...
- June 14th, 2024, 7:05 am
- Forum: Hardware
- Topic: help with raised pin on pu-23
- Replies: 3
- Views: 377
Re: help with raised pin on pu-23
That's not a "pin", it's called "test point", and it isn't needed, and everything should work fine without it. If you want to wire a modchip to that signal, that signal is called WFCK, and there are lots of options for doing that: Scratch off the solder-stop on the PCB wire, use ...
- June 11th, 2024, 7:07 am
- Forum: Hardware
- Topic: PS1 won't read memory card, might be a fuse
- Replies: 4
- Views: 761
Re: PS1 won't read memory card, might be a fuse
Cool, glad that it's working (or bypassed). If you want to replace he fuse someday, there are schematics (with parts lists at the end of the document) for several older/newer PSX mainboards (see the Downloads section on top of the forum page). From what I've learned recently, only the rating in Ampe...
- June 7th, 2024, 9:04 am
- Forum: Hardware
- Topic: PS1 won't read memory card, might be a fuse
- Replies: 4
- Views: 761
Re: PS1 won't read memory card, might be a fuse
If you think that it's a fuse then you do need a multimeter to check if the fuse is broken, and if so, yes, that would require soldering. But, the controller and memory card are using the exact same signals and supply voltages, so it's pretty much implossible that one works & the other doesn't w...
- June 1st, 2024, 8:08 am
- Forum: Input/Output
- Topic: H2500 SN Bios Flash
- Replies: 5
- Views: 3154
Re: H2500 SN Bios Flash
I've looked through the files on the Programmer Tool CDROMs. And, yes, it's rather difficult to extract the BIOS ROM-images from there. There are at least two different file formats (neither one being raw ROM-images), and different BIOSes for different purposes, and different CDROM versions (which h...
- June 1st, 2024, 7:10 am
- Forum: Hardware
- Topic: DTL-H2x00 on Win2k/XP ?!?
- Replies: 3
- Views: 3055
Re: DTL-H2x00 on Win2k/XP ?!?
Okay, I am impressed - I would have thought that it's hopeless to get that working on win2k. I've been looking through some of the older/newer SDK "Programmer Tool" CDROMs. And couldn't even find any dtl-2500 drivers on those discs: There is something called PSSN\WINDEBUG\H2700\*.VXD - and...
- May 28th, 2024, 1:58 am
- Forum: Miscellaneous & Off Topic
- Topic: I have helped to install a PV solar system
- Replies: 0
- Views: 771
I have helped to install a PV solar system
I've helped to install a 6 kW photovoltaik PV system with 18 panels. The PV components are a bit bigger than in DIY projects for digital electronics, and I didn't have any experience with PV, but it's been actually quite simple (and saved a lot of money). The whole thing consists of two strings, one...
- May 26th, 2024, 1:01 pm
- Forum: Work Logs & Projects
- Topic: USB Development Cartridge for PS1
- Replies: 14
- Views: 4661
Re: USB Development Cartridge for PS1
Hmm, I just tried to send some constructive or motivating feedback, as far as possible without seeing your unreleased open source code. But if you want to make it faster, you'll have to do that yourself, I could only tell you how. Usain bolt can run 100 meters in just 9.58 seconds, can you ? Yes, pr...
- May 25th, 2024, 3:12 am
- Forum: Work Logs & Projects
- Topic: USB Development Cartridge for PS1
- Replies: 14
- Views: 4661
Re: USB Development Cartridge for PS1
The FTDI specs say that the chip could support 1Mbyte/s, so it looks as if you are doing something wrong. Are you executing your program code directly from ROM, in an uncached memory area? That would drop the CPU speed from 33Mhz to somewhere below 500kHz. Or are you reading/writing lots of USB cont...
- May 22nd, 2024, 11:36 pm
- Forum: Work Logs & Projects
- Topic: USB Development Cartridge for PS1
- Replies: 14
- Views: 4661
- May 22nd, 2024, 1:55 pm
- Forum: Work Logs & Projects
- Topic: USB Development Cartridge for PS1
- Replies: 14
- Views: 4661
Re: USB Development Cartridge for PS1
I'm using an FTDI USB chip FT245, an some 74 logic chip. Only an USB FIFO, and some logic, without any microprocessor? And the photo looks as if you have a huge eprom or something similar...? I'm not skilled enough to do fpga or stuff like that, this is my first real electronic project. Me neither,...
- May 22nd, 2024, 4:10 am
- Forum: Work Logs & Projects
- Topic: USB Development Cartridge for PS1
- Replies: 14
- Views: 4661
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: 6
- Views: 2404
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: 99277
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: 6
- Views: 2404
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: 2174
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: 2174
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: 3
- Views: 3055
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: 5
- Views: 3154
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: 5
- Views: 3154
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...