NEC PD17062 Datasheet page 92

10.3.2 Example Table Referencing Program
This section shows an example table referencing program.
Example
P0A MEM
P0B MEM
P0C MEM
ORG 0000H
START :
BR MAIN
DATA :
DW 0001H
DW 0002H
DW 0004H
DW 0008H
DW 0010H
DW 0020H
DW 0040H
DW 0080H
DW 0100H
DW 0200H
DW 0400H
DW 0800H
MAIN :
BANK0
SET4 P0ABIO3, P0ABIO2, P0ABIO1, P0ABIO0
SET4 P0BBIO3, P0BBIO2, P0BBIO1, P0BBIO0
MOV RPL,
MOV AR1,
MOV AR0,
LOOP :
#
;
MOVT DBF,
$
;
LD P0A,
LD P0B,
LD P0C,
ADD AR0,
ADDC AR1,
SKNE AR0,
MOV AR0,
BR LOOP
92
0.70H ;
0.71H ;
0.72H ;
; Constant data
;
;
;
;
;
;
;
;
;
;
;
; Built-in macro
#1110B ; Sets general-purpose register to row address 7H of BANK0 .
#(.DL.DATA SHR 4 AND 0FH)
#(.DL.DATA SHR 0 AND 0FH)
; Sets address register to 0001H.
@AR ; Transfers the contents of the ROM specified by AR to data
; buffer.
DBF2 ; Transfers the contents of data buffer to Port0A (70H),
DBF1 ; Port0B(71H), and Port0C (72H) port data registers.
DBF0
#1 ; Increments the contents of data register by one.
#0
#0CH ; Writes 0 in AR0 when the value of AR0 reaches 0CH.
#0 ;
PD17062