1.2.4 TYPES OF PROGRAMMIG LANGUAGES

tells the CPU the job that needs to be done. eg adding or substracting

specifies the data that needs to be acted on.

the value in operand is actually the value to be used

The value in operand references the address in memory where the value is located.

operand gives the address of a register which holds the address of where the value needed is at

An index register is used, which stores a certain value. The register which we need to go to is determined by operand + index register.

inp
sta x
inp
sta y
sub x
brp oki
lda x
sub y
oki out
x dat
y dat
hlt

-------brp name

name out

inp
sta x
inp
sta y
LDA x
sub y
out
x dat
y dat