Z80/R800 Opcodes List

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By gdx

Prophet (2352)

gdx's picture

06-12-2018, 08:08

Please download again the PDF. I corrected the note about the undocumented SLL instructions (CB 30 to CB 37) in R800 mode because as Grauw says (I verified it) them become mirrors of SLA (CB 20 to CB 27) in R800 mode.

By KdL

Paragon (1131)

KdL's picture

07-12-2018, 00:33

Okay thanks!!! LOL!

By gdx

Prophet (2352)

gdx's picture

07-12-2018, 01:22

Oups, ED F1 is missing, I will add it ...

By Grauw

Enlighted (7525)

Grauw's picture

07-12-2018, 10:10

Hi gdx, in your document you state in the notes at the bottom that IN (C) aka IN F,(C) is an undocumented instruction on Z80. However that’s not truly the case, it’s specified on page 270 of the Z80 CPU User Manual. Even though it states there "Undefined Op Code", it seems very defined to me :), or at least documented.

This is unlike the other undocumented Z80 op-codes like LD IXL,A, which have no mention in the manual at all. So IN (C) is a special case in that regard and I consider it "documented".

By gdx

Prophet (2352)

gdx's picture

09-12-2018, 08:49

Updated!

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