PS3 models without Emotion Engine unit use "SPE-compatible SIMD graphics-rounding mode for VMX/Altivec Instructions" for FPU, and VU0 emulated floats calculations. Ps2_emu BIOS is able to run only on ps2emu version of emulator due to RDRAM check. Bios between ps2_emu, and ps2_gxemu/ps2_netemu are different. This is done because some games print debug info on screen when found that are run on dev bios. Also LV1 syscalls are limited to call from all emulators, but can be fully unlocked.Īll emulators use built-in stripped developement version of PS2 BIOS with disabled debug functions that can affect some games. This also mean that while emulators are running we can't call any LV2 function.
This mean that LV2, or more friendly Game OS is unloaded before emulator is loaded. Emulators are not truly PS3 Game OS elf executables, but Guest OS'es running on LV1 of PS3. Only emulator not able to run physical discs is ps2_netemu.Įmulators are self files, but not typical one. It was called ps2_softemu, and had support for original PS2 CDVD. Earlier before Sony provided ps2 classics on PS Store there was another soft only emulator strongly based on ps2_gxemu.
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All other models emulate PS2 thru fully software based ps2_netemu used for ps2 classics, and hacked now to use decrypted ISO files. CECH-C/E use ps2_gxemu, this emulator use physical Graphic Synthesizer found in this ps3 model, but Emotion Engine is fully emulated here, also there is no Rambus memory. CECH-A/B models use ps2_emu.self able to use built-in PS2 hardware (EE/GS/Rambus memory), and have best compatibility.
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