Complex Instruction Set Computing

GPTKB entity

Statements (24)
Predicate Object
gptkbp:instanceOf gptkb:architecture
gptkbp:abbreviation CISC
gptkbp:category CPU design
gptkbp:contrastsWith gptkb:Reduced_Instruction_Set_Computing
gptkbp:emergedIn 1970s
gptkbp:example gptkb:Motorola_68000
gptkb:Intel_8086
gptkb:IBM_System/370
gptkbp:feature variable-length instructions
complex addressing modes
large set of instructions
gptkbp:focus hardware implementation of complex instructions
gptkbp:goal reduce number of instructions per program
simplify compiler design
https://www.w3.org/2000/01/rdf-schema#label Complex Instruction Set Computing
gptkbp:influencedBy early memory constraints
gptkbp:opposedBy RISC design philosophy
gptkbp:type multi-step operations in single instruction
gptkbp:usedIn gptkb:x86_architecture
gptkb:VAX_architecture
gptkb:System/360_architecture
gptkbp:bfsParent gptkb:CISC_(Complex_Instruction_Set_Computing)
gptkb:Reduced_Instruction_Set_Computing
gptkbp:bfsLayer 8