02-06-2016, 11:16 AM -
That sounds very wrong. Either that or my basic knowledge of emulation is very wrong.
Okey, here we go!
What is emulation?
Emulation is (usually) software, that behaves like another hardware/system would behave.
This means, that the software will need to emulate the processor, RAM, instruction set, GPU, or whatever other stuff the hardware has (interrupts, IO registers, timings, etc).
What is HLE emulation?
HLE (High Level Emulation) is a process, where calls to the libraries of the system (in this case the modules for the interaction with hardware) are replaced with calls to code, that (should) behave and perform the same actions and output, as the calls on the system itself.
For an example, a call to a file system library, would be replaced with a custom function in the emulator, that takes the inputs given to the function, then calls the file system libraries on the current system/OS.
What is LLE emulation?
LLE (Low Level Emulation) is a process, in which calls to the libraries of the system are emulated using the actual instructions, that would be executed on the system. This usually means obtaining the BIOS/firmware files, that include the instructions, and then interpreting and emulating them same as they would be executed on the system's CPU. This is almost always slower, but a lot more accurate.
This is the basic gist of HLE vs LLE, from what I know and understand. Probably a couple mistakes slipped by, and I'd appreciate if they would be corrected.
Okey, here we go!
What is emulation?
Emulation is (usually) software, that behaves like another hardware/system would behave.
This means, that the software will need to emulate the processor, RAM, instruction set, GPU, or whatever other stuff the hardware has (interrupts, IO registers, timings, etc).
What is HLE emulation?
HLE (High Level Emulation) is a process, where calls to the libraries of the system (in this case the modules for the interaction with hardware) are replaced with calls to code, that (should) behave and perform the same actions and output, as the calls on the system itself.
For an example, a call to a file system library, would be replaced with a custom function in the emulator, that takes the inputs given to the function, then calls the file system libraries on the current system/OS.
What is LLE emulation?
LLE (Low Level Emulation) is a process, in which calls to the libraries of the system are emulated using the actual instructions, that would be executed on the system. This usually means obtaining the BIOS/firmware files, that include the instructions, and then interpreting and emulating them same as they would be executed on the system's CPU. This is almost always slower, but a lot more accurate.
This is the basic gist of HLE vs LLE, from what I know and understand. Probably a couple mistakes slipped by, and I'd appreciate if they would be corrected.