MC68EC000EI20 Freescale Semiconductor, MC68EC000EI20 Datasheet - Page 522
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MC68EC000EI20
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
-
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Price
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MC68EC000EI20
Manufacturer:
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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
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