assemblylanguages assemblylanguagemodel onestepupfrommachine assembly languages language comsw4995 02 originally a more add r1 r2 user friendly way to program sub r2 r3 prof stephen a edwards nowmostlyacompiler target cmpr3 r4 ...
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...Assemblylanguages assemblylanguagemodel onestepupfrommachine assembly languages language comsw originally a more add r user friendly way to program sub prof stephen edwards nowmostlyacompiler target cmpr fall model of computation pc bnei alu registers memory columbia university stored computer department science i jmp assemblylanguageinstructions typesofopcodes operands built from two pieces arithmetic logical eachoperand taken particular addressing mode mult examples and or cmp register opcode memoryload store immediate whattodowiththedata wheretogetthedata ld st indirect movr control transfer offset pcrelative beq bne reect processor data pathways complex movs typesofassemblylanguages ciscassemblylanguage riscassemblylanguage closely tied architecture developed when people wrote response growing use compilers at least four main types complicated often specialized instructions with many easier uniform instruction sets cisc set effects make the most common operations as fast possible r...