PCM18XK1 Microchip Technology, PCM18XK1 Datasheet - Page 381

• Manufacturer Part Number: PCM18XK1
• Description: MODULE PROC PIC18F8680,6680,8565
• Manufacturer: Microchip Technology

Specifications of PCM18XK1

• Accessory Type: Processor Module
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: ICE2000
• For Use With: ICE2000 - EMULATOR MPLAB-ICE 2000 POD
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

BTG
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
 2004 Microchip Technology Inc.
Q Cycle Activity:
Before Instruction:
After Instruction:
Decode
PORTC =
PORTC =
Q1
register ‘f’
Bit Toggle f
[ label ] BTG f,b[,a]
0
0
a
(f<b>)
None
Bit ‘b’ in data memory location ‘f’ is
inverted. If ‘a’ is ‘0’, the Access Bank
will be selected, overriding the BSR
value. If ‘a’ = 1, then the bank will be
selected as per the BSR value
(default).
1
1
BTG
Read
0111
Q2
0111 0101 [0x75]
0110 0101 [0x65]
f
b < 7
[0,1]
255
PORTC,
f<b>
bbba
Process
Data
Q3
4, 0
ffff
register ‘f’
PIC18F6585/8585/6680/8680
Write
Q4
ffff
BOV
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
If Jump:
If No Jump:
Before Instruction
After Instruction
operation
Decode
Decode
No
PC
If Overflow
If Overflow
Q1
Q1
PC
PC
Read literal
Read literal
operation
Branch if Overflow
[ label ] BOV
-128
if overflow bit is ‘1’
(PC) + 2 + 2n
None
If the Overflow bit is ‘1’, then the
program will branch.
The 2’s complement number ‘2n’ is
added to the PC. Since the PC will
have incremented to fetch the next
instruction, the new address will be
PC+2+2n. This instruction is then
a two-cycle instruction.
1
1(2)
HERE
1110
No
Q2
Q2
‘n’
‘n’
=
=
=
=
=
n
address (HERE)
1;
address (Jump)
0;
address (HERE+2)
127
0100
BOV
operation
Process
Process
Data
Data
No
Q3
Q3
n
DS30491C-page 379
PC
Jump
nnnn
Write to PC
operation
operation
No
No
Q4
Q4
nnnn