mc68ec060 Freescale Semiconductor, Inc, mc68ec060 Datasheet - Page 10

• Manufacturer Part Number: mc68ec060
• Description: Mc68060 Superscalar 68k Microprocessor Including The Lc060 And Ec060
• Manufacturer: Freescale Semiconductor, Inc

4.6.2
4.7
4.7.1
4.7.2
4.7.3
5.1
5.2
5.3
5.4
5.4.1
5.4.1.1
5.4.1.2
5.4.2
5.4.3
5.5
5.5.1
5.5.2
5.5.3
5.5.4
5.6
5.7
5.7.1
5.7.2
5.8
5.9
5.10
5.11
5.12
5.12.1
5.12.2
6.1
6.1.1
6.1.2
6.1.2.1
6.1.2.2
6.1.3
6.1.3.1
6.1.3.2
6.1.3.3
xii
Table of Contents
MMU Instructions........................................................................................ 4-30
Cache Operation........................................................................................... 5-1
Cache Control Register ................................................................................ 5-5
Cache Management ..................................................................................... 5-6
Caching Modes............................................................................................. 5-7
Cache Protocol ............................................................................................. 5-9
Cache Coherency ....................................................................................... 5-10
Memory Accesses for Cache Maintenance ................................................ 5-11
Push Buffer ................................................................................................. 5-13
Store Buffer................................................................................................. 5-13
Push Buffer and Store Buffer Bus Operation.............................................. 5-14
Branch Cache ............................................................................................. 5-14
Cache Operation Summary ........................................................................ 5-15
Floating-Point User Programming Model...................................................... 6-2
Effect of MDIS on Address Translation .................................................... 4-30
MOVEC .................................................................................................... 4-30
PFLUSH ................................................................................................... 4-30
PLPA ........................................................................................................ 4-30
Cachable Accesses .................................................................................... 5-7
Cache-Inhibited Accesses .......................................................................... 5-8
Special Accesses ....................................................................................... 5-9
Read Miss................................................................................................... 5-9
Write Miss ................................................................................................... 5-9
Read Hit...................................................................................................... 5-9
Write Hit.................................................................................................... 5-10
Cache Filling............................................................................................. 5-11
Cache Pushes .......................................................................................... 5-13
Instruction Cache...................................................................................... 5-15
Data Cache............................................................................................... 5-16
Floating-Point Data Registers (FP7–FP0) .................................................. 6-3
Floating-Point Control Register (FPCR) ..................................................... 6-3
Floating-Point Status Register (FPSR)....................................................... 6-4
Writethrough Mode ................................................................................... 5-7
Copyback Mode ....................................................................................... 5-8
Exception Enable Byte ............................................................................. 6-3
Mode Control Byte.................................................................................... 6-3
Floating-Point Condition Code Byte ......................................................... 6-5
Quotient Byte............................................................................................ 6-5
Exception Status Byte .............................................................................. 6-5
M68060 USER’S MANUAL
Floating-Point Unit
Section 5
Section 6
Caches
MOTOROLA