Acorn RISC Machine, aka Acorn RISC Machine, is a historical assembly language created in 1985. ARM, originally Acorn RISC Machine, later Advanced RISC Machine, is a family of reduced instruction set computing (RISC) architectures for computer processors, configured for various environments. British company ARM Holdings develops the architecture and licenses it to other companies, who design their own products that implement one of those architectures—including systems-on-chips (SoC) and systems-on-modules (SoM) that incorporate memory, interfaces, radios, etc. It also designs cores that implement this instruction set and licenses these designs to a number of companies that incorporate those core designs into their own products. Read more on Wikipedia...
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- the Acorn RISC Machine wikipedia page
- Acorn RISC Machine first appeared in 1985
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Example code from Wikipedia:
; if (r0 == r1) CMP r0, r1 ITE EQ ; ARM: no code ... Thumb: IT instruction ; then r0 = r2; MOVEQ r0, r2 ; ARM: conditional; Thumb: condition via ITE 'T' (then) ; else r0 = r3; MOVNE r0, r3 ; ARM: conditional; Thumb: condition via ITE 'E' (else) ; recall that the Thumb MOV instruction has no bits to encode "EQ" or "NE"
Last updated December 4th, 2019