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In reply to Jymbob: Whilst a StrongARM is capable of running both 32bit and 26bit code, it has always been stated that by ROL that RISC OS will run in one mode or another, and not support running some applications in one mode, and some in another. This is so the OS can be compiled entirely for 26bit or 32bit operation, and does not require a large amount of additional code to fix up differing behaviours between an OS and applications running in different modes.

Therefor if Select on the Iyonix is running in 32bit mode, all of the applications and modules will also be entered in 32bit mode. Attempting to run 26bit code in 32bit mode will not work, as just as on the 32bit only X-Scale, instructions have different meanings in this mode, and code expecting or attempting flag preservation will not work correctly or crash.

There is scope for a version of Aemulor that instead of running in a 32bit mode and emulating the behaviour of 26bit instructions, could switch to 26bit code and run them natively without such a server performance penalty. There would still be an additional overhead for providing flag preserving wrappers around OS calls to give the legacy code the behviour it expects, which is already present in Aemulor.

 is a RISC OS Userdruck on 31/10/05 12:06AM
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