EF6805U3 Datasheet, PDF (24/31 Pages) STMicroelectronics – 8-BIT MICROCOMPUTER UNIT

EF6805U3
Table 3 : Branch Instructions.
Function
Branch Always
Branch Never
Branch IFF Higher
Branch IFF Lower or Same
Branch IFF Carry Clear
(branch IFF higher or same)
Branch IFF Carry Set
(branch IFF lower)
Branch IFF Not Equal
Branch IFF Equal
Branch IFF Half Carry Clear
Branch IFF Half Carry Set
Branch IFF Plus
Branch IFF Minus
Branch IFF interrupt mask bit is clear.
Branch IFF interrupt mask bit is set.
Branch IFF interrupt line is low.
Branch IFF interrupt line is high.
Branch to Subroutine
Table 4 : Bit Manipulation Instructions.
Function
Branch IFF Bit n is set
Branch IFF Bit n is clear
Set Bit n
Clear Bit n
Mnemonic
BRSET n (n = 0… 7)
BRCLR n (n = 0… 7)
BSET n (n = 0… 7)
BCLR n (n = 0… 7)
Mn emoni c
BRA
BRN
BHI
BLS
BCC
(BHS)
BCS
(BLO)
BNE
BEQ
BHCC
BHCS
BPL
BMI
BMC
BMS
BIL
BIH
BSR
Relative Addressing Mode
Op
Code
#
Bytes
#
Cycles
20
2
4
21
2
4
22
2
4
23
2
4
24
2
4
24
2
4
25
2
4
25
2
4
26
2
4
27
2
4
28
2
4
29
2
4
2A
2
4
2B
2
4
2C
2
4
2D
2
4
2E
2
4
2F
2
4
AD
2
8
Addressing Modes
Bit Set/clear
Bit Test and Branch
Op
#
#
Op
#
#
Code Bytes Cycles Code Bytes Cycles
2•n
3
10
01 + 2 • n 3
10
10 + 2 • n 2
7
11 + 2 • n 2
7
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