Emulation on similar architectures = better speed?

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Anonymous
Emulation on similar architectures = better speed? 2016-09-01 22:34:50 Post No. 56380143
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Emulation on similar architectures = better speed? Anonymous 2016-09-01 22:34:50 Post No. 56380143 [Report]

If I ran an emulator for, say, the PSX, would it be possible to get better speeds running it on a MIPS machine (same as console)?
Seems to make sense with the OG Xbox's emulator, it's a lot faster than other emulators even though it's one of the most underdeveloped.

Obviously game code wouldn't be ready to run without an emulator even on the same architecture - ps2 games won't run on psp even with an executable formatted to the other system and despite being both MIPS machines.

Anonymous 2016-09-01 22:37:50 Post No.56380205
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Anonymous 2016-09-01 22:37:50 Post No.56380205 [Report]

>>56380143
Well yeah, then you wouldn't have to emulate the complete CPU
Probably like the PSX emu on the PSP

Anonymous 2016-09-01 22:41:06 Post No.56380253
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Anonymous 2016-09-01 22:41:06 Post No.56380253 [Report]

Machines of the same instruction set architecture have the same instruction sets so yes you can theoretically run the software from one on the hardware of another. You'd need a compatibility layer though.

Anonymous 2016-09-01 22:45:11 Post No.56380332
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Anonymous 2016-09-01 22:45:11 Post No.56380332 [Report]

>>56380253
What about the different versions of instruction sets for the same architecture?

Anonymous 2016-09-01 22:49:48 Post No.56380430
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Anonymous 2016-09-01 22:49:48 Post No.56380430 [Report]

>>56380332
If the CPU running the code does not have all the instructions then it will have to emulate at least the missing instructions

Anonymous 2016-09-01 23:22:58 Post No.56380933
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Anonymous 2016-09-01 23:22:58 Post No.56380933 [Report]

>>56380143
Probably

Emulation on similar architectures = better speed?

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