EM78C156E+1621显示汇编例子
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JMP ASG3
ASD3:
BC XS10,4
ASG3:
RRC XS4
RLC XS10
RLC XS9
RLC XS8
RLC XS7
JBS XS3,1
JMP ASD4
BS XS10,4
JMP ASG4
ASD4:
BC XS10,4
ASG4:
RRC XS3
DJZ XS1
JMP AWS
RET
YSA:
MOV A,@2
MOV XS3,A
LOP1:
NOP
DJZ XS3,A
JMP LOP1
RET
XSS: ;HT1621 XS 8-BITS COMMAND MODE
BS PORT5,1
BC PORT5,0 ;CS=0
CALL YSA
BC PORT5,1
CALL YSA
BS PORT5,1 ;DATA=1
BC PORT5,2
BC PORT5,1
CALL YSA
BS PORT5,1 ;DATA=0
BC PORT5,1
CALL YSA
BS PORT5,1 ;DATA=0
MOV A,@8
MOV XS1,A
XSC:
JBS XS2,7
JMP XSD
BS PORT5,2 ;DATA=1
JMP XSG
XSD:
BC PORT5,2 ;DATA=0
XSG:
BC PORT5,1
CALL YSA
BS PORT5,1
RLC XS2
DJZ XS1
JMP XSC
BC PORT5,1
CALL YSA
BS PORT5,1 ;DATA=?
BS PORT5,0 ;CS=1
RET
XSA: ;HT1621XS WRITE MODE
MOV A,@8
MOV XS1,A
WXC:
JBS XS2,7
JMP WXD
BS PORT5,2 ;DATA=1
JMP WXG
WXD:
BC PORT5,2 ;DATA=0
WXG:
BC PORT5,1
CALL YSA
BS PORT5,1
RLC XS2
DJZ XS1
JMP WXC
RET
MAIN:
MOV A,@0X0
IOW 0X0E
MOV A,@0B11000000
CONTW
CLR 0X0F
MOV A,@0X01
IOW 0X0F
ENI
MOV A,@0X10
MOV 0X4,A
LOPKN:
MOV A,@0
MOV 0X0,A
JBS 0X4,6
JMP KOL
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