Search found 198 matches

by TriMesh
May 15th, 2020, 1:10 am
Forum: Hardware
Topic: PSone - What kind of mod is this?
Replies: 8
Views: 156

Re: PSone - What kind of mod is this?

Yeah, that makes sense - in that case presumably there is an IR receiver somewhere and that little board is just reading the IR stream and simulating pushing buttons on the controller.
by TriMesh
May 14th, 2020, 9:35 pm
Forum: Hardware
Topic: PSone - What kind of mod is this?
Replies: 8
Views: 156

Re: PSone - What kind of mod is this?

Yeah, it's a Video CD player board - the CL680 is one of the original single-chip VCD player devices. I suspect that board marked "PS2DVD" is a modchip and the marking is just camoflage. The wires connected to the memory card socket are so the board can read the controller - the pins for the control...
by TriMesh
February 25th, 2020, 6:41 pm
Forum: General Chat / Messaging
Topic: DTL-H1101 Laser replacment..?
Replies: 1
Views: 3274

Re: DTL-H1101 Laser replacment..?

At this point, unfortunately most of the CD drive mechanisms available on places like eBay are basically junk. The production stopped a long time ago and anything that gets put together now is most likely going to be using parts that are either recycled or were rejected back in the day for some reas...
by TriMesh
January 30th, 2020, 5:30 pm
Forum: General Chat / Messaging
Topic: Which replacement laser for which revision?
Replies: 5
Views: 3941

Re: Which replacement laser for which revision?

It's easiest to base in on the main board type. PU-7 and PU-8 machines used either KSM-440AAM or KSM-440ACM PU-18 and PU-20 used KSM-440ADM PU-20 and PU-22 used KSM-440AEM PSone used KSM-440BAM You can freely interchange KSM-440AAM, KSM-440ACM and KSM-440BAM because the cables are the same The KSM-4...
by TriMesh
January 29th, 2020, 6:15 pm
Forum: Input/Output
Topic: PSX Keyboard and Mouse Adaptor (SCPH-2000 Prototype)
Replies: 49
Views: 51421

Re: PSX Keyboard and Mouse Adaptor (SCPH-2000 Prototype)

One interesting thing is that it's using a mask-programmed 68HC05 - which would normally imply these were made in quite large quantities. Makes you wonder where they all went.
by TriMesh
June 1st, 2019, 12:23 am
Forum: Miscellaneous / Off Topic
Topic: Compiling: beatmania APPEND 5thMIX -Time to get down-
Replies: 7
Views: 7232

Re: Compiling: beatmania APPEND 5thMIX -Time to get down-

That looks more like a linker error than anything from the preprocessor.
by TriMesh
May 15th, 2019, 4:59 pm
Forum: General Chat / Messaging
Topic: Yet Another New User!
Replies: 6
Views: 3621

Re: Yet Another New User!

You can try looking on Orion's website at http://onorisoft.free.fr/psx/tutorial/tuto.htm - he's got some helpful information on how to develop for the PSX using less ancient OSes :)
by TriMesh
May 10th, 2019, 10:41 am
Forum: General Chat / Messaging
Topic: Disc burning problems
Replies: 4
Views: 2810

Re: Disc burning problems

The lockups when running Unirom sounds like a weak optical drive. I would tend to say the other stuff is related to the drive too, but I can't explain the problems with running the images in an emulator that way. One thing to note is that the CD drive in the PSX is an old design and has a fixed gain...
by TriMesh
April 21st, 2019, 4:48 am
Forum: Hardware
Topic: Seeking service manuals/hardware information
Replies: 5
Views: 3469

Re: Seeking service manuals/hardware information

There is no pinout for the GTE, because it's not a separate chip. It's implemented as part of the main CPU, and it's not even possible to monitor the signals to it because it's on the R3K coprocessor bus which isn't bought out to pins on the package. Thanks very much for the information. I meant th...
by TriMesh
April 20th, 2019, 5:52 pm
Forum: Hardware
Topic: Seeking service manuals/hardware information
Replies: 5
Views: 3469

Re: Seeking service manuals/hardware information

I've never been able to find one. There is a a cleaned up and more legible version of the manual that was done by nocash: http://www.psxdev.net/forum/viewtopic.php?f=49&t=1312&p=12998&hilit=SCPH+5500#p12998 There is no pinout for the GTE, because it's not a separate chip. It's implemented as part of...
by TriMesh
April 1st, 2019, 2:05 pm
Forum: Programming/CPU
Topic: How to properly send commands to the CD controller (low-level)
Replies: 1
Views: 2602

Re: How to properly send commands to the CD controller (low-level)

You always have to wait for the int before sending another command or it just gets dropped on the floor. If the last int hasn't been cleared, the HC05 just throws the command away.
by TriMesh
March 29th, 2019, 6:37 pm
Forum: General Chat / Messaging
Topic: PSone Internal Cheat Cart / Flash ROM
Replies: 17
Views: 5330

Re: PSone Internal Cheat Cart / Flash ROM

Yeah, you can just connect it to the WR/ signal on the CPU - note that there are 2 of them and the one you want is SWR0/, which is on pin 100 of the CPU.
by TriMesh
March 27th, 2019, 4:51 am
Forum: General Chat / Messaging
Topic: Modchip suggestion for PSOne with bios 4.1
Replies: 4
Views: 2406

Re: Modchip suggestion for PSOne with bios 4.1

Thanks i'll try that. Still i was wondering if one was better than the others. They are all pretty much equivalent in this application - the part of the code that carries out the actual modchip function is the same. For a non-PAL console, there is no need to connect the wire from pin 3 of the PIC t...
by TriMesh
March 25th, 2019, 3:36 am
Forum: Homebrew (General)
Topic: Newer X-Flash Builds
Replies: 67
Views: 39101

Re: Compiling X-Flash

Maybe the inline assembler doesn't like an implied offset of zero - try changing ($4) to 0($4) to make the zero offset explicit
by TriMesh
March 20th, 2019, 4:13 am
Forum: Examples (Psy-Q)
Topic: BS Image Loader Example
Replies: 9
Views: 7128

Re: BS Image Loader Example

This code is one of the first things that i tested. Thanks! But i have a maybe dumb question. Can we use LoadBS() and sort TIM's and/or work with frame buffer at the same time? Here is the example from "Duke Nukem: Time to Kill": https://www.vizzed.com/vizzedboard/retro/user_screenshots/saves15/155...
by TriMesh
March 20th, 2019, 3:44 am
Forum: General Chat / Messaging
Topic: PSone - two modchips simultaneously?
Replies: 16
Views: 7960

Re: PSone - two modchips simultaneously?

It's looks more like a problem with Taiyo Yuden disc - lol. Sony Lead Data/MBI and Ritek discs works better. Anyway thanks for clarifying and help. Right now starting game copy from BIOS ends with "Please insert PlayStation disc". Too long wires? Did you have the drive cover open when the console w...
by TriMesh
March 18th, 2019, 12:16 pm
Forum: General Chat / Messaging
Topic: PSone - two modchips simultaneously?
Replies: 16
Views: 7960

Re: PSone - two modchips simultaneously?

I think the position you have the chip is fine - the problem is that the PM-41(2) is known to be extremely sensitive. As rama said, sometimes adding decoupling to the cap helps - you can also try adding a cap (say another 0.1uF) in series with pin 6 to act as a DC block. Sometimes that helps, someti...
by TriMesh
March 18th, 2019, 12:10 pm
Forum: Hardware
Topic: Playstation SCPH-7502 Loading speed
Replies: 4
Views: 3615

Re: Playstation SCPH-7502 Loading speed

Yeah, slow loading can certainly be caused by a bad CD assembly. Depending on what you mean by "bad condition", it might be worth cleaning the optical pickup assembly - if the unit was stored in dusty conditions, it might have dust on the turning mirror inside the pickup, and that can cause the rea...
by TriMesh
March 18th, 2019, 2:49 am
Forum: Hardware
Topic: Playstation SCPH-7502 Loading speed
Replies: 4
Views: 3615

Re: Playstation SCPH-7502 Loading speed

Yeah, slow loading can certainly be caused by a bad CD assembly. Depending on what you mean by "bad condition", it might be worth cleaning the optical pickup assembly - if the unit was stored in dusty conditions, it might have dust on the turning mirror inside the pickup, and that can cause the read...
by TriMesh
March 18th, 2019, 2:40 am
Forum: General Chat / Messaging
Topic: PSone - two modchips simultaneously?
Replies: 16
Views: 7960

Re: PSone - two modchips simultaneously?

Okay, I have modchip inside of PSone with older board. Does wire lenght matter only for booting, or it could affect also reading disc during game? Also it's stealth install. https://i.imgur.com/ZyTTr4K.jpg It's not beautiful, but it works. The thing is, I have a feeling that it struggles a little m...