· ARMv4i support has been removed and has been replaced by ARMv5 as the earliest ARM architecture supported by Windows Embedded Compact 7.
· ARMv6 and ARMv7 are supported.
· Each of the Chelan BSPs is now enabled for the ARM architecture associated with the BSP.
· ARMv5 is the same as the old ARMv4i, except some v5 instructions may be generated by the compiler.
· Thumb instructions are permitted and the OS code can be called via a 32-bit branch from THUMB code. However, the default builds do not use thumb instructions by default.
· ARMv5 does not use vector floating point by default (it uses emulation). If you have a v5 CPU that has a VFP you should use the OEM FP replacement library to enable that functionality.
· ARMv6 and ARMv7 use VFP inline by default (v2 and v3, respectively). NEON (v7 feature) is auto-detected by some of the multimedia code, but there are no libraries available for generic NEON use. NEON assembly language instructions are supported by the assembler.
· ARMv6 has additional instructions over ARMv5, and ARMv7 has additional instructions over ARMv6.
Platform ARM Version
Freescale i.MX27 ARMv5
Freescale i.MX31 ARMv6
NEC NE1TB ARMv6 (Multiprocessor CPU)
Samsung SMDK6410 ARMv6
Texas Instruments 3530 EVM2 ARMv7