Dwin T5L ASIC Series - Page 17

T5L_ASIC Development Guide
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D WI N T echnology
Pro f essional , Credi t able , Success f ul
Example
Read and write two double words in 0x0800 address (corresponding to DGUSII variable memory
address 0x1000).
MOV ADR_H,#00H ;Configure DGUS variable memory address
MOV ADR_M,#08H
MOV ADR_L,#00H
MOV ADR_INC,#01H ;Configuration address increment
MOV RAMMODE,#0AFH ;Start read mode
JNB APP_ACK,$ ;Waiting for confirmation
MOV R0,#TEST_BUF ;Reading demo
MOV R1,#2
RDVP: SETB APP_EN ;Start reading data once
JB APP_EN,$
MOV @R0,DATA3
INC R0
MOV @R0,DATA2
INC R0
MOV @R0,DATA1
INC R0
MOV @R0,DATA0
INC R0
DJNZ R1,RDVP
CLR APP_RW ;Writing mode; writing demo
MOV ADR_L,#00H ;Adjust the address to 0x08:0000
MOV R0,#TEST_BUF
MOV R1,#2
WRVP: MOV DATA3,@R0
INC R0
MOV DATA2,@R0
INC R0
MOV DATA1,@R0
INC R0
MOV DATA0,@R0
SETB APP_EN ;Start writing data once
JNB APP_EN,$
INC R0
DJNZ R1,WRVP
MOV RAMMODE, #00H ;Variable memory read and write ends