Instructor: R. Michael Buehrer Lecture _6: Analog Pulse Modulation ...

Description

• cours magistral - matière potentielle : objectives
• cours magistral

1ECE4634 Digital Communications Fall 2007 Instructor: R. Michael Buehrer Lecture _6: Analog Pulse Modulation

• baseband signals
• width modulation
• discrete baseband communication systems
• baseband systems
• analog pulse modulation
• pulse amplitude modulation
• bandwidth
• signal
• time

Sujets

• Objective
• Cours magistral
• Baseband
• Analog
• Signal
• Discrete
• Bandwidth
• Modulation
• Signals
• System

Informations

• Publié par: figas
• Nombre de lectures: 17
• Langue: English

Extrait

Writing FCode 2.x Programs
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Revision A, November 1995Ó
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RecycleContents
Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Ordering Sun Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
1. SBus Cards and FCode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
FCode PROM Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Interpreting FCode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Device Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Creating and Executing FCode Definitions . . . . . . . . . . . . . . . . 3
2. Elements of FCode Programming . . . . . . . . . . . . . . . . . . . . . . . 5
Colon Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Stack Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Programming Style . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Commenting Code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Short Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Stack Comments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
iii A Minimum FCode Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
FCode Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Primitive FCodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
System FCodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Interface FCodes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Local FCodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3. Producing FCode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
FCode Source 15
Tokenizing FCode Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
FCode Binary Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Testing FCode on the Target Machine . . . . . . . . . . . . . . . . . . . . . 17
Configuring the Target Machine . . . . . . . . . . . . . . . . . . . . . . . . . 18
Setting Appropriate Configuration Parameters. . . . . . . . . . 18
Modifying The Expansion Bus Probe Sequence 19
Getting to the Forth Monitor 20
Using the Forth Monitor to Download FCode . . . . . . . . . . . . . . 20
Using dload to Load from Ethernet. . . . . . . . . . . . . . . . . . . . 21
Using dlbin to Load From Serial Port A. . . . . . . . . . . . . . . . 21
Using bootom Hard Disk, Floppy Disk, or Ethernet
22
Using the Forth Monitor to Interpret an FCode Program. . . . . 22
Interpretation Under OpenBoot 2 . . . . . . . . . . . . . . . . . . . . . 23
Interpretation Under OpenBoot 1 25
Using the Forth Monitor to Browse a Device Node. . . . . . . . . . 26
iv Writing FCode 2.x Programs—November 1995Device Node Browsing Under OpenBoot 2 . . . . . . . . . . . . . 27owsing Under OpenBoot 1 28
Using the Forth Monitor to Test a Device Node Driver . . . . . . 29
Device Node Methods Under OpenBoot 2 . . . . . . . . . . . . . . 29
Device Node Methods Under OpenBoot 1 . 32
Testing FCode in Source Form . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Producing an FCode PROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Exercising an Installed FCode PROM . . . . . . . . . . . . . . . . . . . . . 33
Exercising FCode Under OpenBoot 2 . . . . . . . . . . . . . . . . . . 34
Exercising FCode Under OpenBoot 1 34
4. Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Package Definitions, Package Instances, and Device Nodes . . 38
Plug-in Device Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Package Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Required Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Recommended Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Package Data Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Accessing Other Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Debugging Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Package Mappings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
nvramrc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Modifying Package Properties . . . . . . . . . . . . . . . . . . . . . . . . 49
Standard Support Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Sun Disk-Label Support Package. . . . . . . . . . . . . . . . . . . . . . 50
Contents vTFTP Booting Support Package . . . . . . . . . . . . . . . . . . . . . . . 51
Deblocker Support Package . . . . . . . . . . . . . . . . . . . . . . . . . . 52
5. Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Standard FCode Properties. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Standaroperties For Cards (General) . . . . . . . . . 57
Device-type Specific Properties For SBus Cards . . . . . . . . . 57
General Properties For Parent Nodes . . . . . . . . . . . . . . . . . . 57
Properties For SBus Parent Nodes . . . . . . . . . . . . . . . . . . . . . 57
Standard Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Manipulating Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Property Creation and Modification . . . . . . . . . . . . . . . . . . . 72
Property Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Property Encoding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Property Retrieval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Property Decoding 74
Property-Specific FCodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
6. Block and Byte Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Block Devices . . . . . . . . . . . . .