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Booting PSP in Jpcsp - Low Level Emulation
11-11-2017, 08:44 PM (This post was last modified: 11-11-2017 08:46 PM by gid15.)
Post: #1
Booting PSP in Jpcsp - Low Level Emulation
Dear Jpcsp community!

during the last months, I've worked on a Low Level Emulation (LLE) in Jpcsp as an alternative to the current High Level Emulation (HLE) approach that was used from the beginning of Jpcsp. This work is mostly a proof of concept to document the internal hardware interface of a PSP. The goal is also to have an easier testing of some HLE functions by using the LLE version as a reference.

Frankly, I was not sure how far this way would lead... but today I have reached an important milestone: the whole reboot process of a PSP could be completed and the VSH is showing up!

Not everything is available for now, there is still no sound, no memory stick, no UMD and no OpenGL support... but this is feasable and just work to be done.

Attached are screenshots after the reboot.


Attached File(s) Thumbnail(s)
           

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11-11-2017, 10:43 PM
Post: #2
RE: Booting PSP in Jpcsp - Low Level Emulation
Great work as always gid Smile
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02-12-2018, 11:56 AM (This post was last modified: 02-12-2018 11:57 AM by onelight.)
Post: #3
RE: Booting PSP in Jpcsp - Low Level Emulation
I am wondering it will make Ad-Hoc Multiplayer working with real PSP? (By using AdhocToUSB.prx and mhpt)

Edit: A remote connection software for PSP TwingHotLink https://github.com/sweetwxh/TwingHotLink
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02-12-2018, 12:33 PM
Post: #4
RE: Booting PSP in Jpcsp - Low Level Emulation
(02-12-2018 11:56 AM)onelight Wrote:  I am wondering it will make Ad-Hoc Multiplayer working with real PSP? (By using AdhocToUSB.prx and mhpt)

Edit: A remote connection software for PSP TwingHotLink https://github.com/sweetwxh/TwingHotLink
It will probably behave the same as running with the option "--vsh" and using the PRX files flash0:/kd/pspnet*.prx from a real PSP.

The above methods are similar to what ProOnline is doing. Doesn't this work to connect to a real PSP?

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02-12-2018, 04:36 PM (This post was last modified: 02-12-2018 04:38 PM by onelight.)
Post: #5
RE: Booting PSP in Jpcsp - Low Level Emulation
(02-12-2018 12:33 PM)gid15 Wrote:  
(02-12-2018 11:56 AM)onelight Wrote:  I am wondering it will make Ad-Hoc Multiplayer working with real PSP? (By using AdhocToUSB.prx and mhpt)

Edit: A remote connection software for PSP TwingHotLink https://github.com/sweetwxh/TwingHotLink
It will probably behave the same as running with the option "--vsh" and using the PRX files flash0:/kd/pspnet*.prx from a real PSP.

The above methods are similar to what ProOnline is doing. Doesn't this work to connect to a real PSP?

ProOnline working but not all game working.
"--vsh" and using the PRX files flash0:/kd/pspnet*.prx also working when connect JPCSP with JPCSP.(not working when play patopon3)
But I never success connect with real PSP when using --vsh, mybe I should try again.
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02-25-2018, 01:34 PM (This post was last modified: 02-25-2018 01:39 PM by onelight.)
Post: #6
RE: Booting PSP in Jpcsp - Low Level Emulation
(02-12-2018 12:33 PM)gid15 Wrote:  
(02-12-2018 11:56 AM)onelight Wrote:  I am wondering it will make Ad-Hoc Multiplayer working with real PSP? (By using AdhocToUSB.prx and mhpt)

Edit: A remote connection software for PSP TwingHotLink https://github.com/sweetwxh/TwingHotLink
It will probably behave the same as running with the option "--vsh" and using the PRX files flash0:/kd/pspnet*.prx from a real PSP.

The above methods are similar to what ProOnline is doing. Doesn't this work to connect to a real PSP?

although bridge.exe show connection ok, PSP stil notl connecting JPCSP, nothing happen.
   
.zip  Adhoc2usb-log.zip (Size: 32.28 KB / Downloads: 1)
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02-25-2018, 03:07 PM (This post was last modified: 02-25-2018 03:22 PM by gid15.)
Post: #7
RE: Booting PSP in Jpcsp - Low Level Emulation
Just to make it clear, as far as I know, only the ProOnline methods can allow AdHoc inter-networking between a real PSP, Jpcsp and/or PPSSPP:
Code:
Adhoc Network    | Jpcsp LAN | Jpcsp --vsh | Jpcsp ProOnline | PSP+ProOnline | PPSSPP ProOnline |
-----------------+-----------+-------------+-----------------+---------------+------------------+
Jpcsp LAN        | x         |             |                 |               |                  |
Jpcsp --vsh      |           | x           |                 |               |                  |
Jpcsp ProOnline  |           |             | x               | x             | x                |
PSP+ProOnline    |           |             | x               | x             | x                |
PPSSPP ProOnline |           |             | x               | x             | x                |

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