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HT82B40R 数据表(PDF) 47 Page - Holtek Semiconductor Inc |
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HT82B40R 数据表(HTML) 47 Page - Holtek Semiconductor Inc |
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47 / 54 page  SWAP [m] Swap nibbles of Data Memory Description The low-order and high-order nibbles of the specified Data Memory are interchanged. Operation [m].3~[m].0 « [m].7 ~ [m].4 Affected flag(s) None SWAPA [m] Swap nibbles of Data Memory with result in ACC Description The low-order and high-order nibbles of the specified Data Memory are interchanged. The result is stored in the Accumulator. The contents of the Data Memory remain unchanged. Operation ACC.3 ~ ACC.0 ¬ [m].7 ~ [m].4 ACC.7 ~ ACC.4 ¬ [m].3 ~ [m].0 Affected flag(s) None SZ [m] Skip if Data Memory is 0 Description If the contents of the specified Data Memory is 0, the following instruction is skipped. As this requires the insertion of a dummy instruction while the next instruction is fetched, it is a two cycle instruction. If the result is not 0 the program proceeds with the following instruc- tion. Operation Skip if [m] = 0 Affected flag(s) None SZA [m] Skip if Data Memory is 0 with data movement to ACC Description The contents of the specified Data Memory are copied to the Accumulator. If the value is zero, the following instruction is skipped. As this requires the insertion of a dummy instruc- tion while the next instruction is fetched, it is a two cycle instruction. If the result is not 0 the program proceeds with the following instruction. Operation ACC ¬ [m] Skip if [m] = 0 Affected flag(s) None SZ [m].i Skip if bit i of Data Memory is 0 Description If bit i of the specified Data Memory is 0, the following instruction is skipped. As this re- quires the insertion of a dummy instruction while the next instruction is fetched, it is a two cycle instruction. If the result is not 0, the program proceeds with the following instruction. Operation Skip if [m].i = 0 Affected flag(s) None TABRDC [m] Read table (current page) to TBLH and Data Memory Description The low byte of the program code (current page) addressed by the table pointer (TBLP) is moved to the specified Data Memory and the high byte moved to TBLH. Operation [m] ¬ program code (low byte) TBLH ¬ program code (high byte) Affected flag(s) None TABRDC [m] Move the ROM code (locate by TBLP and TBHP) to TBLH and data memory (ROM code TBHP is enabled) Description The low byte of ROM code addressed by the table pointers (TBLP and TBHP) is moved to the specified data memory and the high byte transferred to TBLH directly. Operation [m] ¬ program code (low byte) TBLH ¬ program code (high byte) Affected flag(s) None HT82B40R/HT82B40A Rev. 1.70 47 November 5, 2014 |
类似零件编号 - HT82B40R_14 |
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类似说明 - HT82B40R_14 |
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