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eZ80 CPU - writeframeofmind.biz

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<strong>eZ80</strong> <strong>CPU</strong><br />

User Manual<br />

104<br />

OUTD2<br />

Output and Decrement HL<br />

Operation<br />

Description<br />

(BC) ← (HL)<br />

B ← B – 1<br />

C ← C – 1<br />

HL ← HL – 1<br />

The contents of the memory location specified by the HL are loaded into the<br />

<strong>CPU</strong>. This byte is then output to the I/O address specified by the BC register.<br />

The B, C, and HL registers are decremented.<br />

ADL mode affects operations with the HL register. ADL mode may be<br />

overridden with the .S or .L suffix.<br />

Condition Bits Affected<br />

S<br />

Z<br />

H<br />

P/V<br />

N<br />

C<br />

Not affected.<br />

Set if B = 0; reset otherwise.<br />

Not affected.<br />

Not affected.<br />

Set.<br />

Not affected.<br />

Mnemonic Operands ADL Mode Cycles Op Codes<br />

OUTD2 — X 5 ED, AC<br />

OUTD2.S — 1 6 52, ED, AC<br />

OUTD2.L — 0 6 49, ED, AC<br />

UM007701-1100

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