CS1103
 
CS1104-14 ASM Charts2
ASM Charts
 Algorithmic State Machine (ASM) Chart is a high-level flowchart-like notation to specif the har!ware algorithms in !igital sstems"
Ma#or !ifferences from flowcharts are$
%ses 3 tpes of &o'es$ state &o' (similar to operation &o') !ecision &o' an! con!itional &o'
contains e'act (or precise) timing information flowcharts impose a relative timing or!er for the operations"
*rom the ASM chart it is possi&le to o&tain
the control
the architect%re (!ata processor)
 
CS1104-14Components of ASM Charts3
Components of ASM Charts
+he state &o' is rectang%lar in shape" ,t has at most one entr point an! one e'it point an! is %se! to specif one or more operations which co%l! &e sim%ltaneo%sl complete! in one
clock cycle
"
one or more operationsstate&inar co!e
 
CS1104-14Components of ASM Charts4
Components of ASM Charts
+he !ecision &o' is !iamon! in shape" ,t has one entr point &%t m%ltiple e'it points an! is %se! to specif a n%m&er of alternative paths that can &e followe!"
!eci!ing factors!eci!ing factors
of 38