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S3C72G9 Datasheet(PDF) 38 Page - Samsung semiconductor |
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S3C72G9 Datasheet(HTML) 38 Page - Samsung semiconductor |
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38 / 96 page  ', # $%),' BTSF dst.b Operation: Operand Operation Summary Bytes Cycles DA.b Test specified memory bit and skip if bit equals "0" 2 2 + S mema.b 2 2 + S memb.@L 2 2 + S @H+DA.b 2 2 + S Description: The specified bit within the destination operand is tested. If it is a "0", the BTSF instruction skips the instruction which immediately follows it; otherwise the instruction following the BTSF is executed. The destination bit value is not affected. Operand Binary Code Operation Notation DA.b 1 1 b1 b0 0 0 1 0 Skip if DA.b = 0 a7 a6 a5 a4 a3 a2 a1 a0 mema.b 1 1 1 1 1 0 0 0 Skip if mema.b = 0 memb.@L 1 1 1 1 1 0 0 0 Skip if [memb.7-2 + L.3-2]. [L.1-0] = 0 0 1 0 0 a5 a4 a3 a2 @H + DA.b 1 1 1 1 1 0 0 0 Skip if [H + DA.3-0].b = 0 0 0 b1 b0 a3 a2 a1 a0 Second Byte Bit Addresses mema.b 1 0 b1 b0 a3 a2 a1 a0 FF0H-FBFH 1 1 b1 b0 a3 a2 a1 a0 FF0H-FFFH Examples: 1. If RAM bit location 30H.2 is set to “0”, the following instruction sequence will cause the program to continue execution from the instruction identifed as LABEL2: BTSF 30H.2 ; If 30H.2 = "0", then skip RET ; If 30H.2 = "1", return JP LABEL2 2. You can use BTSF in the same way to test a port pin address bit: BTSF P1.0 ; If P1.0 = "0", then skip RET ; If P1.0 = "1", then return JP LABEL3 |
Similar Part No. - S3C72G9 |
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Similar Description - S3C72G9 |
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