Program for the Basic Computer to move a block of data from one location to another using SUBROUTINE

Suppose, 10 data (16-bit) stored from 220H memory address (12-bit) must be transferred to another block starting from 250H memory address. For this, each data should be loaded to accumulator first and then stored to destination address. Then, source address and destination address should be incremented. Assembly program will be the following:

X, BSA TRN

/TRN is a subroutine to transfer data

BSA SRC

/SRC is a subroutine for source address management

BSA DST

/DST is a subroutine for destination address management

ISZ CTR

/CTR is counter for 10 data

BUN X

HLT

TRN, HEX 0

LDA A I

STA B I

BUN TRN I

SRC, HEX 0

LDA A

INC

STA A

BUN SRC I

DST, HEX 0

LDA B

INC

STA B

BUN DST I

A, HEX 220

B, HEX 250

CTR, DEC -10

END