Zilog Z08470 - Manual (Page 187)

UM008007-0715 Z80 Instruction Description
Z80 CPU
User Manual
175
Example
The Accumulator contains the following data:
Upon the execution of a NEG instruction, the Accumulator contains:
1 0 1 0 0 0 0 1
0 1 0 0 0 0 1 1