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Published in:
1982 | OriginalPaper | Chapter
Conditional Jumps and Comparisons
Author : Anthony Woods
Published in: Assembly Language Assembled for the Sinclair ZX81
Publisher: Macmillan Education UK
Included in: Professional Book Archive
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Inside the Z80 microprocessor there is a register, the F register, which is only used to hold information concerning the result produced by the last arithmetic or logic instruction. Of the eight bits in the register only six are used. Figure 6.1 shows the information held in these bits.