MC68EC000EI20 Freescale Semiconductor, MC68EC000EI20 Datasheet - Page 518
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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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Supervisor (Privileged) Instructions
PTEST
Condition Codes:
MMUSR:
6-64
B
Not affected.
The instruction accumulates status as it accesses successive table entries. When the
instruction specifies an address translation cache search with an address register
operand, the MC68030 takes an F-line unimplemented instruction exception.
If there is a parameter specification for a translation table search, the physical address
of the last descriptor successfully fetched loads into the address register. A success-
fully fetched descriptor occurs only if all portions of the descriptor can be read by the
MC68030 without abnormal termination of the bus cycle. If the root pointer’s DT field
indicates page descriptor, the returned address is $0. For a long descriptor, the
address of the first long word is returned. The size of the descriptor (short or long) is
not returned and must be determined from a knowledge of the translation table.
L
S
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
0
W
Test a Logical Address
I
M
(MC68030 only)
0
0
T
0
0
0
0
PTEST
MOTOROLA
N
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