BIT - Revision history

Beannaich at 17:52, 25 May 2012

2012-05-25T17:52:17Z

Beannaich at 17:01, 25 May 2012

2012-05-25T17:01:02Z

Beannaich: Created page with '{{Opcode}} This instruction is part of the $CB prefixed extended instruction set.
This instruction group tests various bits of the various registers, or memory location. It …'

2012-05-25T16:18:44Z

Created page with '{{Opcode}} This instruction is part of the $CB prefixed extended instruction set.<br> This instruction group tests various bits of the various registers, or memory location. It …'

New page

{{Opcode}}

This instruction is part of the $CB prefixed extended instruction set.<br>
This instruction group tests various bits of the various registers, or memory location. It is encoded as follows:

01bbbrrr
| || |
| |+-+- Register
+-+---- Bit to test ('b' has a binary weight of 2^b)

Where register is one of the following:

000: B - 2 Machine Cycles
001: C - 2 Machine Cycles
010: D - 2 Machine Cycles
011: E - 2 Machine Cycles
100: H - 2 Machine Cycles
101: L - 2 Machine Cycles
110: (HL) - 3 Machine Cycles
111: A - 2 Machine Cycles

== Flags ==

Z: 1 if specified bit is 0; 0 otherwise
H: 1
N: 0
C: -

@@ Line 1: / Line 1: @@
 {{Instruction|
    Description=This instruction group tests various bits of the various registers, or memory location. |
-   Encoding=01bbbrrr
+   Encoding=<nowiki>
+bbbrrr
- r: Register
+   | || |
- b: Bit to test
+   | |+-+- Register
   Where register is one of the following:
@@ Line 16: / Line 16: @@
 : L    - 2 Machine Cycles
 : (HL) - 3 Machine Cycles
-: A    - 2 Machine Cycles |
+: A    - 2 Machine Cycles</nowiki> |
    Z=1 if specified bit is 0; 0 otherwise |
    H=1 |
-   N=0}}
+   N=0 |

BIT - Revision history

Beannaich at 17:52, 25 May 2012

Beannaich at 17:01, 25 May 2012

Beannaich: Created page with '{{Opcode}} This instruction is part of the $CB prefixed extended instruction set. This instruction group tests various bits of the various registers, or memory location. It …'

Beannaich: Created page with '{{Opcode}} This instruction is part of the $CB prefixed extended instruction set.
This instruction group tests various bits of the various registers, or memory location. It …'