Texas Instruments MSC1210 - Manual (Page 204)

Register Assignment (MOV)
16-10
With this knowledge of the MOV instruction, some simple memory assignment
tasks can be performed:
1) Clear the contents of Internal RAM address FF
H
:
MOV A,#00h ;Move the value 00h to the accumulator
;(accumulator=00h)
MOV R0,#0FFh ;Move the value FFh to R0 (R0=0FFh)
MOV @R0,A ;Move accumulator to @R0, thus clearing
;contents of FFh
2) Clear the contents of Internal RAM address FF
H
(more efficient):
MOV R0,#0FFh ;Move the value FFh to R0 (R0=0FFh)
MOV @R0,#00h ;Move 00h to @R0 (FFh), clearing contents of FFh
3) Clear the contents of all bit memory, internal RAM addresses 20
H
through
2F
H
(this example will later be improved upon to require less code):
MOV 20h,#00h ;Clear Internal RAM address 20h
MOV 21h,#00h ;Clear Internal RAM address 20h
MOV 22h,#00h ;Clear Internal RAM address 20h
MOV 23h,#00h ;Clear Internal RAM address 20h
MOV 24h,#00h ;Clear Internal RAM address 20h
MOV 25h,#00h ;Clear Internal RAM address 20h
MOV 26h,#00h ;Clear Internal RAM address 20h
MOV 27h,#00h ;Clear Internal RAM address 20h
MOV 28h,#00h ;Clear Internal RAM address 20h
MOV 29h,#00h ;Clear Internal RAM address 20h
MOV 2Ah,#00h ;Clear Internal RAM address 20h
MOV 2Bh,#00h ;Clear Internal RAM address 20h
MOV 2Ch,#00h ;Clear Internal RAM address 20h
MOV 2Dh,#00h ;Clear Internal RAM address 20h
MOV 2Eh,#00h ;Clear Internal RAM address 20h
MOV 2Fh,#00h ;Clear Internal RAM address 20h