MC68EC000EI20 Freescale Semiconductor, MC68EC000EI20 Datasheet - Page 522

• Manufacturer Part Number: MC68EC000EI20
• Description: IC MPU 32BIT 20MHZ 68-PLCC
• Manufacturer: Freescale Semiconductor

Specifications of MC68EC000EI20

• Processor Type: M680x0 32-Bit
• Speed: 20MHz
• Voltage: 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

Supervisor (Privileged) Instructions
PTEST
Operation:
Assembler
Syntax:
Attributes:
Description: This instruction searches the access control registers for the address
Condition Codes:
ACUSR:
x = May be 0 or 1.
Instruction Format:
6-68
15
1
1
x
Not affected.
descriptor corresponding to the < ea > field and sets the bit of the access control unit
status register (ACUSR) according to the status of the descriptor.
The < function code > operand is specified in one of the following ways:
The effective address is the address to test.
The AC-bit is set if a match occurs in either (or both) of the access control registers.
14
x
1
0
1. Immediate—Three bits in the command word.
2. Data Register—The three least significant bits of the data register specified in
3. Source Function Code (SFC) Register
4. Destination Function Code (DFC) Register
the instruction.
13
1
0
x
12
0
1
0
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
If Supervisor State
Else TRAP
PTESTR FC, < ea >
PTESTW FC, < ea >
Unsized
Then Logical Address Status
11
x
0
0
Test a Logical Address
10
0
0
x
R/ W
x
9
0
(MC68EC030)
0
8
0
0
0
7
0
REGISTER
AC
6
0
ACUSR
0
5
MODE
0
4
EFFECTIVE ADDRESS
0
3
FC
PTEST
x
2
REGISTER
MOTOROLA
x
1
0
x