Editing POPS

Jump to navigation Jump to search
Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then publish the changes below to finish undoing the edit.

Latest revision Your text
Line 1: Line 1:
POPS is Playstation 1 emulator for PSP.
==Overwiew==
==Overwiew==
POPS is Playstation 1 emulator for PSP, bundled with PSP firmware since 3.00 release. Currently (6.61) there are 7 different versions bundled with every firmware. This weird approach is not uncommon on psp, and many other modules come with 7 different versions (impose, power, loadexec, etc.). 6.61 bundle pops for 7 PSP generations: 01g(PSP-1000), 02g(PSP-2000), 03g/04g/07g/09g(PSP-3000), 11g(PSP-E1000 known as PSP Street), but like master Yoda like to say, "there is another". Firmware for PSP Go bundle POPS for fifth generation 05g which is of course PSP Go (N1000). Differences are unknown, but changes in strictly emulation code are unlikely, compatibility should be the same. From technical point of view there is no recompiler/interpreter per se. There is also no emitter in form known from different emulators, instead there are predefined functions able to emit some predefined code. Does it mean PS1 code run natively? No, not really. Code analyzer is needed to hijack execution of things that can't be done natively. That include cycle counting, hardware registers handling, memory remapping, GTE emulation, DMA emulation, MDEC emulation, I/O accesses. Beside that anything that happen outside of r3000 need to be emulated too, like GPU, SPU, etc.
POPS emulator is bundled with PSP firmware since 3.00 release. Currently (6.61) there are 7 different versions bundled with every firmware. This weird approach is not uncommon on psp, and many other modules come with 7 different versions (impose, power, loadexec, etc.). 6.61 bundle pops for 7 PSP generations: 01g(PSP-1000), 02g(PSP-2000), 03g/04g/07g/09g(PSP-3000), 11g(PSP-E1000 known as PSP Street), but like master Yoda like to say, "there is another". Firmware for PSP Go bundle POPS for fifth generation 05g which is of course PSP Go (N1000). Differences are unknown, but changes in strictly emulation code are unlikely, compatibility should be the same. From technical point of view there is no recompiler/interpreter per se. There is also no emitter in form known from different emulators, instead there are predefined functions able to emit some predefined code. Does it mean PS1 code run natively? No, not really. Code analyzer is needed to hijack execution of things that can't be done natively. That include cycle counting, hardware registers handling, memory remapping, GTE emulation, DMA emulation, MDEC emulation, I/O accesses. Beside that anything that happen outside of r3000 need to be emulated too, like GPU, SPU, etc.


==Important Memory Addresses==
==Important Memory Addresses==
Please note that all contributions to PSP Developer wiki are considered to be released under the GNU Free Documentation License 1.2 (see PSP Developer wiki:Copyrights for details). If you do not want your writing to be edited mercilessly and redistributed at will, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource. Do not submit copyrighted work without permission!

To protect the wiki against automated edit spam, we kindly ask you to solve the following hCaptcha:

Cancel Editing help (opens in new window)