david4599 (@david4599_hex) - Twitter Profili | Zamantika Mersobahis Locabet

Sabitlenmiş Tweet

david4599@david4599_hex·23 Haz

OMG IT WORKS!! 🥳 Selfbootable #PS1 CD-R! No modchip! That's a huge progress since last time but there are big reliability issues and I'm not sure that this can be fixed using my method. Increase the sound to hear the PS1 struggling to read the disc. More details below.

English

61

297

1.3K

207.5K

david4599 retweetledi

Ryan M@Grimdoomer·1 Eyl

I know I said I retired from console hacking but I got one more in me. An Xbox 360 softmod is coming, no eta yet, THIS WILL TAKE TIME to finish

English

201

712

5.1K

455.9K

david4599@david4599_hex·23 Ağu

@DeVlLT Hey, well, it's not live yet, I will put the link in my profile once this is ready. I still have stuff to write and other things to do right now but it's getting there.

English

1

0

2

81

Daniel@DeVlLT·23 Ağu

@david4599_hex Hello again. I forgot to ask for your blog. Can you give me the link? Thanks

English

1

0

140

david4599@david4599_hex·23 Haz

OMG IT WORKS!! 🥳 Selfbootable #PS1 CD-R! No modchip! That's a huge progress since last time but there are big reliability issues and I'm not sure that this can be fixed using my method. Increase the sound to hear the PS1 struggling to read the disc. More details below.

English

61

297

1.3K

207.5K

david4599@david4599_hex·29 Tem

@_ramapcsx2 @EliasDaler This happened to me too when I used WD40, it worked a bit then it somewhat evaporated so I applied even more WD40 (like flooded xD) and that was worse. But on the other motors, I put a few drops at the back and front with the classic 3 in 1 light oil and this works well since.

English

1

0

3

261

Robert Neumann@_ramapcsx2·29 Tem

@david4599_hex @EliasDaler It's just <very risky> :p I've tried this on perhaps 4-5 bad motors, and typically, it instantly fixes the problem for a few minutes. If it then manages to stay that way the next day, the fix worked. In my experience though, it's then back to bad and worse even.

English

1

0

2

404

Elias Daler@EliasDaler·21 Tem

Btw, CD as a medium kinda sucks on PS1... * A lot of PS1 lasers are faulty and don't work well. * CD-R is much worse than CD-ROM in terms of quality/ease of seeking/reading for PS1. * PS1 is designed for 71 min/620 MB CD's - finding those today is almost impossible.

Elias Daler@EliasDaler

A historic moment... I bought a CD burner and now my game launches from the CD on a real PS1! I don't have a modchip, so I'm loading it using Unirom, also it takes a while for the CD drive to spin up... so skip to 00:41 if you just want to see the gameplay.

English

37

70

923

31K

david4599@david4599_hex·27 Tem

@_ramapcsx2 @EliasDaler Well, my experience with these motors is that a few drops of light oil as shown in the youtube video (without removing the spindle hub to avoid breaking it) really seems to do the job. This works great since these last months at least, no idea in the long term.

English

1

0

1

202

Robert Neumann@_ramapcsx2·27 Tem

@david4599_hex @EliasDaler Definitely, yea. Bad spindle can be heard: It's loud, especially at rampup or slowdown, and the rampup/slowdown take a long time. I have no good fix for this, other than 2 things: - WD40 etc has a 80/20 chance of killing it. - Continued normal use can "unstuck" it after a while.

English

1

0

2

300

david4599@david4599_hex·25 Tem

@_ramapcsx2 @EliasDaler IIRC from these 3 drives, one produce a weaker RF, 100 - 200mVpp less than normal (maybe slight rails wear or weak laser diode) and the two others are fine even though the RF is weaker too but that's the motherboard, probably bad caps because the RF is good, 1Vpp on another board

English

0

89

david4599@david4599_hex·25 Tem

@_ramapcsx2 @EliasDaler Yep, I'm aware about the rails wearing (especially on the all plastic versions) but I just feel like the motors are a more common issue than we think. I mean, 3 of my 6 PS1s had that problem (+ 1 or 2 other original drives I bought).

English

2

1

2

228

david4599@david4599_hex·22 Tem

@_ramapcsx2 @EliasDaler If this works better by tilting the console 45° forward or backward, then the culprit is probably the spindle motor like it is here:

English

1

0

3

167

david4599@david4599_hex·22 Tem

@_ramapcsx2 @EliasDaler Before messing with the laser power though 👇 (bad spindle lubrication was one of the issue for some of my drives that didn't properly read CD-Rs, and at the same time, that also allowed better reading of the lead-in beginning for my current project ^^) x.com/david4599_hex/…

david4599@david4599_hex

@EliasDaler @Tankerbot I didn't test many brands but the CMC Pro (Taiyo Yuden) produce a stronger RF signal on the oscilloscope than these verbatims. Also, by hearing the rattling noise and the lens badly clicking, the drive needs lubrication, especially the spindle motor: youtube.com/watch?v=cnNTnl…

English

1

0

2

196

david4599@david4599_hex·18 Tem

@EliasDaler @Tankerbot Modern drives can burn these CMC Pro at high speeds btw. I'm burning them at 16x and I didn't see any FMV skipping. This clearly happens at 4x though (way less RF jitter on the scope at high speeds)

English

0

94

david4599@david4599_hex·18 Tem

@EliasDaler @Tankerbot I didn't test many brands but the CMC Pro (Taiyo Yuden) produce a stronger RF signal on the oscilloscope than these verbatims. Also, by hearing the rattling noise and the lens badly clicking, the drive needs lubrication, especially the spindle motor: youtube.com/watch?v=cnNTnl…

YouTube

English

1

0

370

Elias Daler@EliasDaler·18 Tem

A historic moment... I bought a CD burner and now my game launches from the CD on a real PS1! I don't have a modchip, so I'm loading it using Unirom, also it takes a while for the CD drive to spin up... so skip to 00:41 if you just want to see the gameplay.

English

42

180

1.9K

98.1K

david4599@david4599_hex·16 Tem

@DeVlLT Not the 700x, but most 750x, every 900x and every PSone 10x (PU-22, PU-23 and PM-41 boards to be precise). Basically, they have tighter tolerances and my wobble patterns must be less spaced but this disturbs the lens too much and I couldn't find a good compromise.

English

2

0

81

Daniel@DeVlLT·16 Tem

@david4599_hex Are you referring to the SCPH-7002 and 9002 models?

English

1

0

138

david4599@david4599_hex·16 Tem

@DeVlLT Yep it's definitely better with new tricks I found recently even though there are still downsides like the late PS1 models not supported. Right now, I'm documenting the project in a small blog I'm building and unless I become busy, it should be released in a few weeks I hope.

English

1

0

1

137

Daniel@DeVlLT·15 Tem

@david4599_hex A magnificent project. How's the progress? From what I've read, it seems more stable now.

English

1

0

185

david4599 retweetledi

prank17@prank17_·2 Nis

I’ve completed the PSNee PCB for the PSone (PS1 Slim), easy to install and compatible with both NTSC and PAL versions. Everything is programmed on the latest generation ATtiny426. If you're interested: ebay.it/itm/3265136055…

English

6

36

209

11.1K

david4599@david4599_hex·8 Mar

@TICS_Game Thanks! Yep it has plenty of features, it pretty much connects to every part of a burner, laser and optical pickup servo stuff, audio, ATAPI/IDE, RAM, and is controlled via its parallel uC interface.

English

0

2

43

TICS@TICS_Game·8 Mar

@david4599_hex Oh, this is a nice coincidence 😁 Good luck for the RE, just by the look of the logic we can see there is a lot of stuff here haha!

English

1

0

1

71

TICS@TICS_Game·7 Mar

Oak OTI9797

Indonesia

3

86

2.1K

david4599@david4599_hex·7 Mar

@czajnick @TICS_Game Trying to "replicate" the PS1 copy protection on CD-R to play copies/homebrews on unmodified consoles. You can check my old pinned tweet. There is still a lot of stuff to do but it's going well even if there are limitations with my method.

English

0

2

45

Przemysław Węgrzyn@czajnick·7 Mar

@david4599_hex @TICS_Game What project is it?

English

1

0

46

david4599 retweetledi

Travis Goodspeed@travisgoodspeed·24 Oca

Remote code execution on a Yamaha piano. psi3.ru/blog/swl01u/

Filipino

17

281

1.6K

89.8K

david4599@david4599_hex·29 Eki

Too lazy to push the reset button every time I wanted to upload another program so I added a software reset feature (triggered from the computer) to the new PS1USB development cart :D

OrionSoft@onorisoft

Firmware update v1.2 for the #PS1USB development cartridge, this adds a new software reset feature contributed by @david4599_hex If you are interested in this #Playstation1 dev cart, send me an email, Download update here orionsoft.games/retroshop/ps1u… #psxdev

English

0

9

709

david4599@david4599_hex·4 Eki

@DeviousMalcon_t The reliability is pretty good now, but there are limitations. This doesn't work for every PS1 and the burner's firmware I'm modding has a better control natively on the laser than most burners but it is rare and quite expensive. I hope workarounds can be found in the future.

English

0

33

david4599@david4599_hex·4 Eki

@DeviousMalcon_t Yeah, it's not easy to understand the scale of this wobble, we can find drawings but the amplitude is exaggerated. At this size, a laser is the only solution to me. This is what they actually use in factories to create the tracks on the glass masters.

English

0

38

david4599

Keşfet