Program:
{
==================================================
HLL int Count = 20;
char ATsign = '@';
do
{
System.out.print(ATsign);
Count--;
}while (Count != 0)
}
==================================================
; Assembly version of the code above
.ORIG x4000 ;the starting address of the program at run-time
INIT_DO_WHILE1
LD R1, Count
LD R0, ATsign
BODY_DO_WHILE1
OUT ;print out character whose encoding is in R0
;this is a pseudo-instruction for TRAP x21
ADD R1, R1, -1 ;Count--
BRnp BODY_DO_WHILE1 ;branch back to BODY_DO_WHILE1 if Count != 0
END_DO_WHILE1
HALT ;stop user program (pseudo-instr for TRAP x25)
Count.FILL 20
ATsign.FILL x40 ;x40 is the ASCII for the @ sign
.END
==================================================
; version Assembly of the code above
.ORIG x4000 ;the starting address of the program at run-time
;Initialize loop variables
INIT_DO_WHILE1
LD R1, Count
LD ______________
;Body of the do_while
BODY_DO_WHILE1
OUT ;print out character whose encoding is in R0
;this is a pseudo-instruction for TRAP x21
_________________ ;Fill in the remaining code
_________________ ;Fill in the rem...