EmuZWin is a ZX-Spectrum emulator for Windows.

• Some fixes from version 1.7 to 1.12. Now I can remove mark Beta. Further working on the emulator are stopped now for a time. But if bugs were found, I'll fix it.
  

» EmuZWin homepage.

Credits: The Emulation64 Network

This is extremely great news for the people who have been waiting to play homebrew on their PSP's!

Welcome to 1.50, PSP firmware 2.0 users! MPH has created a WORKING downgrader from PSP firmware 2.0 to firmware 1.50. This takes advantage of the toc2rta exploit and allows for the full downgrade of firmware 2.0 to firmware 1.50. I have tried this myself and have successfully downgraded from firmware 2.0 to firmware 1.50.

 

Although this has been tried and found working, this does not mean there is no risk involved so use at your own risk.

 

Steps to use the MPH downgrader:

- Create an UPDATE folder in the /PSP/GAME/ folder of your memory stick

- Copy EBOOT.PBP (update 1.50) in /PSP/GAME/UPDATE folder

- Unpack MPHDowngrader.zip

- Copy overflow.tif in your PSP/PHOTO/ folder of your memory stick

(make sure you have changed your background to frame_buffer.png as explained in the toc2rta exploit.)

- Copy h.bin in root of your memory stick

- Copy index.dat in root of your memory stick

- Plug the AC adaptor

 

What you do next is go into the Photo Menu on the PSP and it will show some jumbled text, which is normal. Wait about 30 seconds and then restart your PSP.

 

From there you will now have a new file in your PSP’s root directory called ms0:/index.dat.bak. In the next step you will go to you Game Menu, Then Memory Stick, and then Launch “PSP Update ver 1.50.”

 

It will then ask you to downgrade and lead you along to installing. Here is where I got scared. It installed to 99% then errored. This is OK. Restart your PSP and reboot it. It will come up with another error which is OK as well. Restart it again and you will have PSP firmware version 1.50. Enjoy, and welcome to the world of legal homebrew, not piracy.

»» Credits: PSPUpdates.com

»» http://rapidshare.de/files/5607151/MPHDowngrader.zip.html

»» Click here for Tutorial!

September 27, 2005 - Mednafen 0.3.4 Released

This release is primarily focused on improving PC Engine emulation.

Changes since 0.3.2(0.3.3 was a private release):

 

* Added command-line option "-autofirefreq" for setting the frequency of the configured auto-fire buttons when playing NES and PC Engine games.

* PCE:  Fixed Street Fighter 2 HuCard emulation.

* PCE:  Modified PSG waveform writing/DDA emulation, fixes "Fire Pro Wrestling - Combination Tag".

* PCE:  Modified TRB and TSB emulation.  Fixes "Toy Shop Boys".

* PCE:  Implemented VRAM-VRAM DMA direction control bits.

* PCE:  Altered VDC timing, fixing a few games, making a few games more bouncy.

* PCE:  Fixed sprite clipping on the left side of the screen.

* PCE:  The emulated RCR register is now masked with 0x3FF when being set.  Fixes Niko Niko Pun.

* PCE:  Several CPU cycles are now emulated between setting the in-vblank flag and the vblank IRQ occurring.  This works around an issue that would otherwise require timing granularity as small as one cpu cycle.  Interestingly, this same type of problem occurs with NES emulation.

* PCE:  Altered the display rectangle calculation code to take into effect screen areas that may be hidden on many television sets (and some games were designed with the assumption that these areas WOULD be hidden).

* PCE:  Modified noise emulation...again. :b

* PCE:  Modified LFO emulation, fixes major sound problems in "Bull Fight".

* PCE:  The sprite DMA completion IRQ now occurs earlier(probably a few cycles too early now, but oh well).  Fixes some graphical issues in "Bull Fight".

* PCE:  Sprite bit plane selection is now emulated to a degree.  Fixes "Fighting Run".

* PCE:  Very high-frequency(and probably inaudible) sounds are no longer played, because Blip_Synth can't handle them well.  Fixes "Bouken Danshaku Don" and others.

Get it HERE

3.80a (26-Sep-2005)

 

* misc: you can't download local datfiles anymore

* fixed: windows 2000 tree control refresh issue

* fixed: horiz. scrollbar hides last scanresults tree item in some cases

Get it HERE