Assembly Language Help (alang.hlp) (Table of Contents; Topic list)
Important Notice
The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
Accumulator Direction (a) Bit
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     The accumulator direction (a) bit changes the direction of accumulator
     data transfer. If set, move accumulator to memory. If clear,
     move memory to accumulator.
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