Re:Z80 arithmetic: also surprisingly terrible (2018)
by howard941 on Monday January 14, 2019 @01:29PM
(#18905119)
> And only A can be directly written to or from memory
I think the author might to write that only A can be indirectly written to or from memory but even that isn't correct as demonstrated by the code bits that retrieve and store from and to ram @HL (and IY/IX+blah). The 8080 was able to directly read and write HL. The Z80 could do it for IX, IY, and IIRC BC and DE too.
I think the author might to write that only A can be indirectly written to or from memory but even that isn't correct as demonstrated by the code bits that retrieve and store from and to ram @HL (and IY/IX+blah). The 8080 was able to directly read and write HL. The Z80 could do it for IX, IY, and IIRC BC and DE too.