Motorola MC6805R Series User Manual

Table 10-3. Branch Instructions
Relative Addressing Mode
op #
#
Function
Mnemonic
Code Bytes
Cycles
Branch Always BRA 20
2
4
Branch Never
BRN
21
2
4
Branch
IFF Higher BHI 22 2
4
Branch
IFF Lower or Same BLS 23
2
4
Branch
IFF Carry Clear BCC
24
2
4
(Branch
IFF Higher or Same)
(BHS)
24
2
4
Branch
IFF Carry Set BCS 25 2
4
(Branch
IFF Lower)
(BLO)
25
2
4
Branch
IFF Not Equal BNE
26
2
4
Branch
IFF Equal
BEQ
27 2 4
Branch
IFF Half Carry Clear
BHCC
28 2
4
Branch
IFF Half Carry Set BHCS 29 2
4
Branch
IFF Plus BPL 2A 2 4
Branch
IFF Minus BMI 2B 2
4
Branch
IFF Interrupt Mask
Bit
is Clear
BMC
2C
2
4
Branch
IFF Interrupt Mask
Bit
is Set
BMS
2D
2
4
Branch
IFF Interrupt Line
is Low BIL 2E 2
4
Branch
IFF Interrupt Line
is High
BIH
2F
2
4
Branch
to Subroutine BSR AD
2 8
Table 10-4. Bit Manipulation Instructions
Addressing Modes
Bit Setl Clear Bit Test and Branch
op # #
op # #
Function
Mnemonic
Code Bytes
Cycles
Code
Bytes
Cycles
Branch IFF Bit n is Set BRSET n(n=O ... 7)
-
-
-
2-n
3
10
Branch IFF Bit n is Clear
BRCLR
n(n=O ... 7)
-
-
- 01 +2-n 3
10
Set Bit n
BSET n(n:;:O ... 7)
10+2-n
2
7
-
- -
Clear Bit n
BCLR n(n=O ... 7)
11 +2-n 2
7
-
-
-
10-7

Motorola MC6805R Series Specifications

General

Brand	Motorola
Model	MC6805R Series
Category	Computer Hardware
Language	English