Maintenance script: Initial automated import

2016-02-05T22:37:55Z

Initial automated import

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Tests if the specified bit is set.

== Syntax ==



bit n,op8

=== Allowed Instructions ===


n can be any integer from [0,7]. It must be defined on compile time.

bit n,a
bit n,b
bit n,c
bit n,d
bit n,e
bit n,h
bit n,l
bit n,(hl)
bit n,(ix+n)
bit n,(iy+n)

== Effects ==


Opposite of the n^^th^^ bit is written into the Z flag. C is preserved, N is reset, H is set, and S and P/V are undefined.

ld a,%00000001
bit 0,a ;would reset Z
bit 1,a ;would set Z

== Uses ==


== T-States ==
r denotes 8-bit register.
{| class="wikitable"
| r || 8
|-
| (hl) || 12
|-
| (ix+X) || 20
|-
| (iy+X) || 20
|}

== See Also ==


[[Z80:Opcodes:AND|AND]],[[Z80:Opcodes:CCF|CCF]],[[Z80:Opcodes:CP|CP]],[[Z80:Opcodes:CPD|CPD]],[[Z80:Opcodes:CPDR|CPDR]],[[Z80:Opcodes:CPI|CPI]],[[Z80:Opcodes:CPIR|CPIR]],[[Z80:Opcodes:CPL|CPL]],[[Z80:Opcodes:OR|OR]],[[Z80:Opcodes:RES|RES]],[[Z80:Opcodes:SCF|SCF]],[[Z80:Opcodes:SET|SET]],[[Z80:Opcodes:XOR|XOR]]

{{lowercase}}
[[Category:Z80 Assembly]]
[[Category:Z80 Heaven]]
[[Category:Z80 Opcodes]]

Z80:Opcodes:BIT - Revision history

Maintenance script: Initial automated import