Complex Instruction Set Computer

GPTKB entity

Statements (28)
Predicate Object
gptkbp:instanceOf gptkb:architecture
gptkbp:abbreviation CISC
gptkbp:advantage higher power consumption
fewer instructions per program
more complex hardware
slower clock speeds compared to RISC
gptkbp:category gptkb:architecture
gptkbp:coinedBy gptkb:David_Patterson
1980s
gptkbp:contrastsWith gptkb:Reduced_Instruction_Set_Computer
gptkbp:example gptkb:DEC_VAX
gptkb:Intel_8086
gptkb:IBM_System/370
gptkbp:feature variable-length instructions
complex addressing modes
large set of instructions
microcode implementation
gptkbp:goal improve code density
reduce number of instructions per program
simplify compiler design
https://www.w3.org/2000/01/rdf-schema#label Complex Instruction Set Computer
gptkbp:opposedBy gptkb:RISC
gptkbp:usedIn gptkb:x86_architecture
gptkb:VAX_architecture
gptkb:Motorola_68000_series
gptkb:System/360_architecture
gptkbp:bfsParent gptkb:Reduced_Instruction_Set_Computer
gptkbp:bfsLayer 6