Package: armv6-support (21)

CPU feature checking - require ARMv6

The packages in the isa-support family probe for microprocessor Instruction Set Architecture features such as SSE3. By refusing to install on machines lacking a required feature, they allow ISA requirements to be handled in terms of package dependencies.

This is a mostly dummy package which checks for ARMv6 and refuses to install on unsupported hardware.

The ARMv6 architecture (not to be confused with product family ARM6) uses physically addressed cache, solving many cache aliasing problems and reducing context switch overhead. Unaligned and mixed-endian data access is supported. This architecture includes the first version of Thumb technology.

This feature is not guaranteed by the architecture baseline, but is available for newer armel machines in the ARM11 product family, including ARM1136J(F)-S, ARM1156T2(F)-S, ARM1176JZ(F)-S, ARM1136EJ(F)-S, and ARM11MPCore processors. Boards include the Raspberry Pi model 1 and Raspberry Pi Zero.

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