SCAD Processor Simulator

This is an instruction set simulator for a SCAD processor that has been designed in the Embedded Systems Group of the RPTU of Kaiserslautern (see the SCAD reference sheet).

// *************************************************************************
// The following SCAD program computes the factorial of a number specified
// in the first line.
// *************************************************************************
// initialization of the loop
00: 4 -> PU[0].inL
01: Dup -> PU[0].opc
02: PU[0].outR -> PU[2].inL
03: 1 -> PU[1].inL
04: Copy -> PU[1].opc
05: 0 -> PU[2].inR
06: LeqN -> PU[2].opc
// a loop starts here with the following invariant
//  PU[0].outL=x and PU[1].outL=y and PU[2].outL=z:=x<=0
// the loop computes y := y*x; x:=x-1; z:=x<=0
07: PU[2].outL -> CU.cnd
08: 15 -> CU.pc
09: PU[1].outL -> PU[1].inL
10: PU[0].outL -> PU[0].inL
11: Dup -> PU[0].opc
12: PU[0].outL -> PU[0].inL
13: PU[0].outR -> PU[1].inR
14: MulN -> PU[1].opc
15: 1 -> PU[0].inR
16: SubN -> PU[0].opc
17: PU[0].outL -> PU[0].inL
18: Dup -> PU[0].opc
19: PU[0].outR -> PU[2].inL
20: 0 -> PU[2].inR
21: LeqN -> PU[2].opc
22: -15 -> CU.pc
// clean-up code after the loop
23: PU[0].outL -> PU[0].inL
24: Kill -> PU[0].opc
25: PU[1].outL -> LSU.val
26: 1 -> LSU.adr
27: Store -> LSU.opc
// *************************************************************************

buffer size:

memory size:

issues per step:

max steps:

Fachbereich Informatik

Embedded Systems Group (ES)

SCAD Processor Simulator