Difference between revisions of "User:CoBB"

Revision as of 03:18, 25 February 2006

Ez az Ã©n kis jÃ¡tszÃ³terem.

Instruction	Opcode	Time	S	Z	X	H	Y	P	N	C	Effect
call A	`11001101 Al Ah`	17	-	-	-	-	-	-	-	-	sp -= 2, (sp) := pc, pc := A
ld R1,R2	`01xxxyyy`	4	-	-	-	-	-	-	-	-	R1 := R2
pop P	`11xx0001`	10	-	-	-	-	-	-	-	-	P := (sp), sp += 2
push P	`11xx0101`	11	-	-	-	-	-	-	-	-	sp -= 2, (sp) := P
ret	`11001001`	10	-	-	-	-	-	-	-	-	pc := (sp), sp += 2

Notation	Meaning	Respective opcode bits
A	16-bit address	Al - low byte, Ah - high byte
P	16-bit register pair: bc, de, hl, af	00, 01, 10, 11
Q	16-bit register: bc, de, hl, sp	00, 01, 10, 11
R	8-bit general purpose register: a, b, c, d, e, h, l	111, 000, 001, 010, 011, 100, 101

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+== About this page ==
 Ez az Ã©n kis jÃ¡tszÃ³terem.
+== Z80 instruction set ==
+=== Reference ===
+{| border=1 cellspacing=0 cellpadding=2
+! Instruction !! Opcode !! Time !! S !! Z !! X !! H !! Y !! P !! N !! C !! Effect
+|-
+| call A || <tt>11001101 Al Ah</tt> || 17 || - || - || - || - || - || - || - || - || sp -= 2, (sp) := pc, pc := A
+|-
+| ld R1,R2 || <tt>01xxxyyy</tt> || 4 || - || - || - || - || - || - || - || - || R1 := R2
+|-
+| pop P || <tt>11xx0001</tt> || 10 || - || - || - || - || - || - || - || - || P := (sp), sp += 2
+|-
+| push P || <tt>11xx0101</tt> || 11 || - || - || - || - || - || - || - || - || sp -= 2, (sp) := P
+|-
+| ret || <tt>11001001</tt> || 10 || - || - || - || - || - || - || - || - || pc := (sp), sp += 2
+|}
+=== Legend ===
+{| border=1 cellspacing=0 cellpadding=2
+! Notation !! Meaning !! Respective opcode bits
+|-
+| A || 16-bit address || Al - low byte, Ah - high byte
+|-
+| P || 16-bit register pair: bc, de, hl, af || 00, 01, 10, 11
+|-
+| Q || 16-bit register: bc, de, hl, sp || 00, 01, 10, 11
+|-
+| R || 8-bit general purpose register: a, b, c, d, e, h, l || 111, 000, 001, 010, 011, 100, 101
+|}