Search found 306 matches

by nocash
August 12th, 2017, 10:58 am
Forum: Research
Topic: VCD Player for PSX (software based)
Replies: 22
Views: 28405

VCD Player for PSX (software based)

Just released my VCD Player for PSX, fully software based, without needing extra video/audio hardware. The VCD player is included in my kernel clone (which can be used as BIOS ROM replacement, or as Expansion ROM, ie. with Datel or Xplorer cheat devices). The kernel binaries are in included in no$ps...
by nocash
August 9th, 2017, 1:25 am
Forum: NO$PSX Emulator
Topic: NOCASH PSX-BIOS SWAP
Replies: 17
Views: 18738

Re: NOCASH PSX-BIOS SWAP

In theory, yes, assuming that you didn't mean CPU pin 22, and that caetla uses only the first 128Kbytes of the chip, and that you've somehow removed the action replay I/O port accesses.
by nocash
August 8th, 2017, 2:08 pm
Forum: NO$PSX Emulator
Topic: NOCASH PSX-BIOS SWAP
Replies: 17
Views: 18738

Re: NOCASH PSX-BIOS SWAP

Chip select for BIOS ROM is CPU pin 97. Chip select for Expansion ROM is CPU pin 98 (or Expansion Port pin 4). The latter would map your ROM similar to those used in cheat cards, but of course without reprocuding their internal I/O ports, nor the weird 'paged' memory mapping used in some of that car...
by nocash
August 8th, 2017, 2:02 pm
Forum: Hardware
Topic: Chipless Modchips
Replies: 6
Views: 5807

Re: Chipless Modchips

Okay, if that's reliable then I could do that, too. But I still need a tri-state output instead of open-collector, so the 74HC126 chip should be still easiest. At best, I could omit the two wires for the SYNC and WFCK pins, I don't have a PU-22 board for testing the software-generated clock though.....
by nocash
August 8th, 2017, 3:33 am
Forum: Hardware
Topic: Chipless Modchips
Replies: 6
Views: 5807

Re: Chipless Modchips

I am still trying to figure out the best way for the "External Expansion ROM version, for newer boards (PU-22)". It would need the DATA signal and a WFCK signal, and of course the circuit should be inactive when disconnecing the expansion ROM. I have tried to output a merged "DATA+WFCK" signal to th...
by nocash
August 5th, 2017, 2:47 pm
Forum: Documentation
Topic: SCPH-100 series Service Manual request (replies with results
Replies: 11
Views: 11323

Re: SCPH-100 series Service Manual request

Good idea to use multiple zip's to get around the 2MB attachment limit. Here's the edited PU-18 service manual (this are three separate zip, you'll need to unzip each file separately). Sony Playstation SCPH-5500,5501,5502,5503 Service Manual (PU-18) - low resolution (part 1).zip Sony Playstation SCP...
by nocash
August 4th, 2017, 11:14 am
Forum: Documentation
Topic: SCPH-100 series Service Manual request (replies with results
Replies: 11
Views: 11323

Re: SCPH-100 series Service Manual request

You don't happen to have a nicer PU-18 scan by chance? Maybe even a PU-7 / PU-8 *anything*? That'd be great! :) Would be great, I hope that scans show up someday! For PU-18 (aka SCPH-5500/5501/5502/5503), I've spent some days on 'remastering' the existing scan (the one with the messy top-down image...
by nocash
August 2nd, 2017, 3:52 am
Forum: Hardware
Topic: No red beam on laser - motherboard issue
Replies: 3
Views: 2272

Re: No red beam on laser - motherboard issue

There's no red beam. It's infra-red, I doubt that any humans could see the beam, no matter if it's working or not. Worst thing I could think of is that the beam might burn your eyes when gazing at it. EDIT: Or well, yes, there's some faintly visible red light when gazing at it from some viewing angl...
by nocash
August 1st, 2017, 9:21 am
Forum: Members Downloads
Topic: UniROM 8 (2nd beta's released!)
Replies: 391
Views: 333125

Re: UniROM V6 - New stuff and things.

I've recently tested the Secret Unlock commands on a console with japanese/asian cdrom firmware. Of course, the commands won't work, and don't unlock anything on such consoles, and I thought that the console would just ignore those commands. But actually it turned out to be worse than just ignoring ...
by nocash
July 21st, 2017, 12:53 am
Forum: Input/Output
Topic: Question about rare Dual Analog-controller
Replies: 25
Views: 24640

Re: Question about rare Dual Analog-controller

There should be some way to get the buttons back working. I don't know which is the best (and longest lasting) method, but some ideas would be cleaning the contacts with contact spray or some other liquids, or 'repainting' the contacts with conductive silver, or search for 'remote control buttons' f...
by nocash
July 15th, 2017, 1:51 am
Forum: Hardware
Topic: PlayStation PAL Series Colour/Color Modification (PAL60)
Replies: 70
Views: 73352

Re: PlayStation PAL Series Colour/Color Modification (PAL60)

The clock shape (sine/square/other) isn't the issue. The first problem is how to synchronize the color clock to the GPU clock (that will give you a perfectly stable picture with "perfectly stable" color artifacts). And the second problem is how to de-synchronize it again (by adding some small timing...
by nocash
July 13th, 2017, 8:31 am
Forum: Input/Output
Topic: Question about rare Dual Analog-controller
Replies: 25
Views: 24640

Re: Question about rare Dual Analog-controller

No, I didn't notice any lag. Or do you mean that ugly 500 cycle delay being needed in the serial transfer? You'll never notice that with the offical kernel - since it's always using that even bigger delay with more than 2000 cycles - no matter what kind of controller you have connected. It's only an...
by nocash
July 12th, 2017, 9:10 am
Forum: NO$PSX Emulator
Topic: NOCASH PSX-BIOS SWAP
Replies: 17
Views: 18738

Re: NOCASH PSX-BIOS SWAP

A19 would be for 1Mbyte chips (the SCPH-5903 actually has that much memory, probably because two teams worked on developing that console, and each wanted to have their "own" 512Kbytes of memory (technically there has been no good reason for using that much memory)). For a 512Kbyte chip, store the 25...
by nocash
July 12th, 2017, 8:52 am
Forum: Hardware
Topic: PlayStation PAL Series Colour/Color Modification (PAL60)
Replies: 70
Views: 73352

Re: PlayStation PAL Series Colour/Color Modification (PAL60)

That 8pin chip you have there is a PIC microcontroller that you are using to "amplify" the 2pin oscillator? Uncommon solultion, but if you have the PIC in there anyways & think that it should work then it's okay. Otherwise 4pin oscillator would be easier. Also, since you said that the colors came ba...
by nocash
July 11th, 2017, 1:34 pm
Forum: Work Logs / Projects
Topic: Read and write PS2 memory card with Arduino
Replies: 10
Views: 15917

Re: Read and write PS2 memory card with Arduino

I recommend using resistor voltage divider instead of zener diodes as you get a finer control of the voltage. That method is fine if you need a reference voltage, but it isn't too suitable for supply voltages. The memory card will also act like another resistor wired to ground, so the voltage will ...
by nocash
July 11th, 2017, 10:18 am
Forum: Input/Output
Topic: Question about rare Dual Analog-controller
Replies: 25
Views: 24640

Re: Question about rare Dual Analog-controller

Yes, more pictures or part numbers would be great! Yup, I've meanwhile figured out that there are a bunch of revisions for various analog/digital pads, this page has some (lowres) PCB photos: http://www.slagcoin.com/joystick/pcb_wiring.html#PCB_DIAGRAMS for different models (if your browser doesn't ...
by nocash
July 11th, 2017, 7:46 am
Forum: NO$PSX Emulator
Topic: NOCASH PSX-BIOS SWAP
Replies: 17
Views: 18738

Re: NOCASH PSX-BIOS SWAP

That http://i68.tinypic.com/23stbpc.jpg photo is showing... a PROM ??? That chip isn't even UV-eraseable, so you have only one single attempt to get the programming logic right, not to mention the programming voltages. Well, good luck with it - but I have some doubts, to say the least. Using a simil...
by nocash
July 11th, 2017, 12:50 am
Forum: Input/Output
Topic: Question about rare Dual Analog-controller
Replies: 25
Views: 24640

Re: Question about rare Dual Analog-controller

Okay, here are the component list and pinouts for the SCPH-1150, and also for SCPH-1200 and SCPH-110. Oh, and comparing it with your photos, here also some questions/comments... Going by the photos, your SCPH-1180 has the same mainboard/daughterboard than my SCPH-1150 (DD1P09A=mainboard, and DD1Q14A...
by nocash
July 11th, 2017, 12:10 am
Forum: Input/Output
Topic: Question about rare Dual Analog-controller
Replies: 25
Views: 24640

Re: Question about rare Dual Analog-controller

Just a quick run-down on the different joypads: * SCPH-1010 digital joypad (with short cable) * SCPH-1080 digital joypad (with longer cable) * SCPH-1150 analog joypad (with one vibration motor, with red/green led) * SCPH-1180 analog joypad (without vibration motors, with red/green led) * SCPH-1200 a...
by nocash
July 4th, 2017, 3:16 am
Forum: Members Downloads
Topic: UniROM 8 (2nd beta's released!)
Replies: 391
Views: 333125

Re: UniROM V6 - New stuff and things.

He is saying that the flashing tool only works with some chips. In your case, the one with the SST chip. Not really, I was trying to say that there are three possible problems (the FLASH memory size, the FLASH programming flowchart, or the FLASH voltages). But yeah, that means that "it won't work" ...