Difference between revisions of "CSC270 Weekly Schedule 2012"

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* [[CSC270 Lab 7 2012 | Lab 7]] (mini lab at the end of introduction to 6811).
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*
 
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*   
 
*   
 +
|}
 +
 
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| Week 9 <br /> 3/19<br />
 
| Week 9 <br /> 3/19<br />
 
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[[Image:SpringBreak.png|800px]]
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==Second Half ==
 
==Second Half ==
  
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** Comments on past [[CSC270 Midterm Exam 2012|Midterm ]]
 
** Comments on past [[CSC270 Midterm Exam 2012|Midterm ]]
 
* '''Wednesday'''  
 
* '''Wednesday'''  
 +
** [[CSC270 Exercises on Assembly Language | Learning Assembly through Exercises]]
 
* '''Friday'''
 
* '''Friday'''
 +
** Office Hours
 +
<br />
 +
<br />
 
----
 
----
−
*   
+
*   [[CSC270 Lab 7 2012 | Lab 7]] (first part done on Monday. Second part on Wednesday)
 +
*  [[CSC270 Homework 7 2012 | Homework 7]] and [[CSC270 Homework 7 Solution 2012| Solution]]
 +
 
 
||
 
||
  
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||
 
||
 
* '''Monday'''
 
* '''Monday'''
 +
** The process of disassembling: [[CSC270 Exercise on Disassembling| Disassembling Exercise]]
 +
** Indexed Addressing Mode
 +
 +
 +
** Conditional Branches.
 +
*** BEQ, BNE, BGT (signed), BLT (signed)
 +
*** A good dec/hex converter that works with signed numbers: [http://www.binaryconvert.com/convert_signed_char.html binaryconvert.com]
 
* '''Wednesday'''  
 
* '''Wednesday'''  
 +
** Engineering: Deciphering how the 6811 energizes the Address, Data and Control busses when it runs a program.
 +
<center>[[Image:CSC270_FigureA14.png|200px]] [[Image:CSC270_TableFigureA14.png|200px]] <br /> (taken from [http://maven.smith.edu/~thiebaut/classes/270/6811/68hc11a8ref.pdf the 6811 Reference Manual])</center>
 +
** The main signals: E, R/W, and LIR
 +
<center>[[Image:6811MainSignalsE_RW_LIR.png|200px]]</center>
 +
** Screen shots:
 +
{|
 +
|
 +
[[Image:CSC270TimingDiagramLoop1.jpg|100px]]
 +
|
 +
[[Image:CSC270TimingDiagramLoop2.jpg|100px]]
 +
|
 +
[[Image:CSC270TimingDiagramLoop3.jpg|100px]]
 +
|
 +
[[Image:CSC270TimingDiagramLoop4.jpg|100px]]
 +
|}
 +
 
* '''Friday'''
 
* '''Friday'''
 +
** Sentence of the week, found in the 6811 Pocket Reference: <blockquote><font color="magenta">The term ''Big Endian'' comes from Jonathan Swift’s satire Gulliver’s Travels. In Swift’s book, a Big Endian refers to a person who cracks their egg on the big end. The Lilliputians considered the big endians as inferiors. The big endians fought a long and senseless war with the Lilliputians who insisted it was only proper to break an egg on the little end.</font></blockquote>
 +
** Negative numbers in binary
 +
** Condition Codes: HINZVC
 +
*** Z: Zero
 +
*** V: Overflow
 +
*** N: Negative
 +
*** C: Carry
 +
*** H: Half-Carry
 +
*** I: Interrrupt Mask
 +
** Conditional Branches
 +
*** BEQ
 +
*** BNE
 +
*** BGT
 +
*** BLT
 +
*** BRA (unconditional)
 
----
 
----
−
*   
+
*  [[CSC270 Lab 8 2012| Lab 8]]
 +
* [[CSC270 Homework 8 2012 | Homework 8]]
 
||
 
||
−
*   
+
*  Negative (signed) numbers are covered in the [http://cs.smith.edu/dftwiki/images/4/47/6811Manual.pdf 6811 Manual], In Section 3. 
 +
* The Condition Code register is also covered in Section 3.
 
<!-- ================================================================== -->
 
<!-- ================================================================== -->
 
|- style="background:#ffffff" valign="top"
 
|- style="background:#ffffff" valign="top"
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||
 
||
 
* '''Monday'''
 
* '''Monday'''
 +
** Review of negative numbers.
 +
** New question: How can we extend a positive or negative number from 1 byte to two bytes?
 +
** Review Condition Code Register
 +
** Rule:
 +
*** Every instruction that makes information pass through ALU will modify the CC bits (HINZVC).  Typical instructions: Add, Sub, Shift, Rotate, Multiply, Divide, And, Or, Not, Xor, and '''Compare''' (which is a subtract operation).
 +
*** Special instructions can modify individual bits: For example '''CLC''' and '''SEC''' can be used to clear or set the '''Carry''' bit.
 +
*** Some instruction can have different outcome depending on some of the CC bits: ''Conditional Branches'': BEQ, BNE, BLT, BGT.
 +
** The '''Compare''' (CMP) instruction:
 +
*** It is a subtract operation that does not store the result of the subtraction, but instead sets the HINZVC bit depending on the result of the subtraction.
 +
** The Conditional Branch instructrions:
 +
*** They operate as follows:
 +
 +
  if ''specific CC bit'' == ''some predefined value'':
 +
        PC = PC + ''displacement''
 +
  else:
 +
        PC = PC + 1
 +
 +
:::For example:
 +
 +
    BEQ, (Branch if equal)
 +
    if  Z bit == 1:
 +
        PC = PC + ''displacement''
 +
    else:
 +
        PC = PC + 1
 +
 +
*** Computing the displacement in hex.  Case #1
 +
 +
      LDAA  alpha
 +
      CMPA  #5         ; alpha==5?
 +
      BEQ    same
 +
diff: ...            ; go here if != 5
 +
      ...
 +
      ...
 +
same: ...            ; go here if == 5
 +
 +
:::Assume BEQ is at Address 0010 and ''same'' at Address ''0023''.  Address of ''diff'' label is at 0012 (because BEQ label takes 2 bytes).  0012 + displacement must be equal to 0023.  Hence displacement is 11 (only 2 digits, as only 1-byte displacement allowed).
 +
 +
*** Case #2:  branching back
 +
 +
same: ...                ; go here if == 5
 +
 +
      LDAA  alpha
 +
      CMPA  #5          ; alpha==5?
 +
      BEQ    same
 +
diff: ...            ; go here if != 5
 +
      ...
 +
      ...
 +
 +
:::Assume BEQ is at address 0020, and ''same'' is at 0005.  The displacement must be a negative number that, once added to 0022 (because that's the address of the instruction after BEQ), will result in 0005.
 +
 +
    0022
 +
+  XXXX
 +
---------
 +
    0005
 +
 +
:::There are many different ways to compute XXXX.  Which ever way we find, we find XXXX = FFE3, so the displacement is the lower byte, or '''E3'''.
 +
 +
 +
 
* '''Wednesday'''   
 
* '''Wednesday'''   
 +
** Class Quiz:
 +
*** Question 1:  We know how to build an 8-bit adder with gates.  How do we build an 8-bit subtracter?
 +
*** Question 2: How can we build an 8-bit module that either adds or subtracts depending on a single command signal?  If the signal is 0, the module adds two 8-bit values.  If the signal is 1, the module subtracts one from the other.
 +
** Building a 1-bit output '''port'''
 +
** The [[Media:6811MemoryMap.pdf| 6811-Kit Memory Map]]
 
* '''Friday'''
 
* '''Friday'''
 +
** Question in need of answers:  How many different addresses does your Lab-9 LED respond to?
 +
** Overview of [[CSC270 Homework 9 2012 | Homework #9]]
 +
** Continuation of [[CSC270 Lab 9 2012 | Lab #9]].
 +
 
----
 
----
−
*
+
* [[CSC270 Lab 9 2012 | Lab #9]]
 +
* [[CSC270 Homework 9 2012 | Homework #9]] and [[CSC270 Homework 9 Solutions 2012| solutions]]
 
||
 
||
−
*
+
* Reading
 +
** The condition code register is covered in Section 3.5 of the Motorola [[Media:6811Manual.pdf | 6811 Manual]]. Skip Section 4.
  
 
<!-- ================================================================== -->
 
<!-- ================================================================== -->
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||
 
||
 
* '''Monday'''
 
* '''Monday'''
 +
** Preparation for Friday's possible visit (parents/students in class)
 +
** A review of how memory-mapped I/O works (output).  The general rules
 +
** Building an '''input''' port
 +
*** Basic rules of electronics when circuits exchange information:
 +
**** One source to many receivers (talk about [http://en.wikipedia.org/wiki/Fan-out fan-out])
 +
**** Many sources to one receiver (talk about [http://en.wikipedia.org/wiki/Three-state_logic tristate drivers])<br /><center>[[Image:CSC270_244Driver.png|300px]]</center>
 +
*** &micro;P outputting data bit to many devices (ROM, RAM, I/O ports)
 +
*** &micro;P receiving data from several devices
 +
*** Designing a 1-bit input port.  The main players
 +
*** The software driver for inputting the bit.
 +
** The alternative to '''memory-mapped I/O''': '''dedicated I/O'''
 
* '''Wednesday'''  
 
* '''Wednesday'''  
 +
[[Image:CentronicsProtocole.png|150px|right]]
 +
** Prepartion for [[CSC270 Lab 10 2012 | Lab #10]]
 +
** [[CSC270 Lab 10 2012 | Lab #10]]
 +
** Presentation of '''Dedicated I/O'''
 +
** Advantages and disadvantages of Dedicated vs. Memory-Mapped I/Os
 +
** The Centronics interface (explained in this [http://cs.smith.edu/dftwiki/images/1/1b/CSC270_ParallelPort.pdf pdf]).
 +
** [[CSC270 Exercises on 6811 I/O designs| Exercises]]
 
* '''Friday'''
 
* '''Friday'''
 +
** If ( Class visit )
 +
***  Take a simple problem, develop it, wire it up, and demonstrate its good working conditions
 +
** else
 +
***  {
 +
**** Present current  [[CSC270 Homework 10 2012 | homework assignment]]
 +
**** <font color="magenta">'''Question of the day''': ''Why couldn't you set the LED from the keyboard in the one before the last lab?''</font>
 +
**** Adding RAM to the 6811.  The [http://maven.smith.edu/~thiebaut/classes/270/datasheets/nte2114.pdf 2114] 1Kx4 static RAM chip.<br />[[Image:2114TimingDiagram.gif|400px]]<br />(image taken from [http://www.doulos.com/knowhow/verilog_designers_guide/models/simple_ram_model/ www.doulos.com])
 +
**** Observation: Interfacing 2114 to 6811 is almost pin-to-pin wiring.  This is because 2114 designed to be compatible with most processors.  This in turns forces manufacturer to design new hardware to be compatible with older parts ==> we are stuck in a generic type of architecture (which is based on von Neumann architecture at a higher-level).
 +
*** }
 +
<br />
 +
<br />
 
----
 
----
 +
* [[CSC270 Lab 10 2012 | Lab #10]]
 +
* [[CSC270 Homework 10 2012 | Homework #10]] and [[CSC270 Homework 10 Solution 2012| solutions]]
 +
 
||
 
||
−
*   
+
*  The [http://cs.smith.edu/dftwiki/images/1/1b/CSC270_ParallelPort.pdf Parallel Port] protocol (centronics interface).
 +
* [http://en.wikipedia.org/wiki/Memory-mapped_I/O Memory-Mapped I/O] on wikipedia
 +
* [http://en.wikipedia.org/wiki/Memory-mapped_I/O Channel I/O]: when dedicated I/O goes the full length!
  
 
<!-- ================================================================== -->
 
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| Week 13 <br /> 4/23<br />
 
| Week 13 <br /> 4/23<br />
 
||
 
||
 +
[[File:CoolRunner-II kit.jpg|right|150px]]
 
* '''Monday'''
 
* '''Monday'''
 +
** Review of the last homework assignment
 +
** Review of last lab: setting two LEDs to blink
 +
** Introduction to Xilinx's CPLD II, Xilinx's ISE 13.4, and the CoolRunner II kit.
 +
** <onlysmith>[http://cs.smith.edu/dftwiki/images/CPLDandVerilog.pdf Presentation (PDF)]</onlysmith>
 
* '''Wednesday'''   
 
* '''Wednesday'''   
 +
** Xilinx ISE: <onlysmith>[http://cs.smith.edu/dftwiki/images/CPLDandVerilog.pdf Presentation #2 (PDF)]</onlysmith>
 
* '''Friday'''
 
* '''Friday'''
 +
** [http://www.ccscne.org/2012/ CCSCNE Conference]
 
----
 
----
 +
* [[CSC270 Lab 11 2012 | Lab #11 on Xilinx ISE and Schematics]]
 +
* [[CSC270 Homework 11 2012 | Homework #11]]
 
||
 
||
−
*
+
* Good reference on Verilog: [http://ehis.ebscohost.com/eds/detail?vid=2&hid=20&sid=30d789de-3182-423d-9db9-da9edf403f24%40sessionmgr15&bdata=JnNpdGU9ZWRzLWxpdmU%3d#db=cat00321a&AN=fivecol.004029166 Fundamentals of DIgital Logic with Verilog Design], by Brown & Vranesic, McGraw Hill pub., 2003.
  
 
<!-- ================================================================== -->
 
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||
 
||
 
* '''Monday'''
 
* '''Monday'''
 +
** Introduction to Verilog. <onlysmith>[http://cs.smith.edu/dftwiki/images/IntroductionToVerilog.pdf Presentation Slides (PDF)]</onlysmith>
 
* '''Wednesday''': <font color="magenta">Last Day of Class</font>
 
* '''Wednesday''': <font color="magenta">Last Day of Class</font>
 +
** Continuation of Verilog presentation.  We stopped at Exercise 1 on Monday.  We continue from there...
 +
** Presentation of the [[CSC270_Final_Exam_2012 | Final Exam]].
 
----
 
----
 +
* [[CSC270_Final_Exam_2012 | Take-Home Final Exam]]
 
||
 
||
−
*
+
* All the references for this week's material can be found at the bottom of this page, in the Xilinx and Verilog sections.
  
  
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[[Image:6811.jpg | right]]
 
[[Image:6811.jpg | right]]
 
<!-- *[http://www.eecs.ucf.edu/undergrad/CpE/labs/EEL4767 Good source of info] on the 6811. -->
 
<!-- *[http://www.eecs.ucf.edu/undergrad/CpE/labs/EEL4767 Good source of info] on the 6811. -->
 +
* [http://www.ele.uri.edu/Courses/ele205/6811-Instructions/index.html A concise 2-page] list of the Instructions and op-codes.
 
* [http://www.clear.rice.edu/elec201/Book/6811_asm.html A good tutorial on 6811 assembly language] ([[Media:6811AssemblyTutorial_RiceUniversity.pdf|pdf]])
 
* [http://www.clear.rice.edu/elec201/Book/6811_asm.html A good tutorial on 6811 assembly language] ([[Media:6811AssemblyTutorial_RiceUniversity.pdf|pdf]])
 
* [http://www.faqs.org/faqs/microcontroller-faq/68hc11/ 6811 FAQs].
 
* [http://www.faqs.org/faqs/microcontroller-faq/68hc11/ 6811 FAQs].
Line 479: Line 648:
 
<br />
 
<br />
 
<br />
 
<br />
 +
==Verilog/CPLD==
 +
[[File:CoolRunner-II_kit2.jpg|right|300px]]
 +
=== Books ===
 +
* Good reference on Verilog: [http://ehis.ebscohost.com/eds/detail?vid=2&hid=20&sid=30d789de-3182-423d-9db9-da9edf403f24%40sessionmgr15&bdata=JnNpdGU9ZWRzLWxpdmU%3d#db=cat00321a&AN=fivecol.004029166 Fundamentals of DIgital Logic with Verilog Design], by Brown & Vranesic, McGraw Hill pub., 2003.
 +
 +
===Web Resources===
 +
The following links point to good tutorials.
 +
* [http://faculty.ksu.edu.sa/eltamaly/Documents/tutorials/FPGA/ Verilog Tutorial] by Deepak Kumar Tala, 2003.
 +
* [http://www-inst.eecs.berkeley.edu/~cs61c/resources/verilog.pdf Another Verilog Tutorial] from Berkeley.
 +
* [http://www.strumpen.net/xilinx/tut82i/ise.html A tutorial] from IBM.
 +
* A very good, concise [http://csserver.evansville.edu/~blandfor/UEVerilogTutorial.pdf Verilog Tutorial] with many examples by D. K. Blandford, University of Evansville. ([[Media:VerilogTutorialDKBlanford.pdf|pdf]])
 +
* [[Tutorials#Xilinx_ISE_and_The_CoolRunner_II_CPLD | Tutorials/Labs]] on how to create simple combinational and sequential circuits with Xilinx's ISE 13.4.
 +
 +
==Xilinx and CPLDs==
 +
* [http://www.xilinx.com/support/documentation/data_sheets/ds094.pdf CoolRunner2] data sheet and specs.
 +
* [http://people.wallawalla.edu/~larry.aamodt/engr433/xilinx_lib6_ref.pdf Xilinx's extended library of circuits supported], including logic gates and flip-flops.
 +
* [http://www.xilinx.com/support/documentation/sw_manuals/xilinx13_1/ise_tutorial_ug695.pdf Xilinx Tutorial] on its ISE.
 +
* <onlysmith>[http://cs.smith.edu/dftwiki/images/CPLDandVerilog.pdf Presentation PDF] on Xilinx's CoolRunner II CPLD and synthesis and testing of schematics.</onlysmith>
 +
* [http://cs.smith.edu/classwiki/index.php/CSC270_Labs_--_CSC400-Circuit_Design_F2011 CSC270 Labs on the CoolRunner II], by '''Tiffany Liu''', Smith College.
 
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[[Category:CSC270]]
 
[[Category:CSC270]]

Latest revision as of 08:57, 30 July 2012

--D. Thiebaut 15:03, 18 January 2012 (EST)

Main Page | Weekly Schedule



Office Hours: M 1:10-3:00 p.m., W 4:00-6:00 p.m.

Weekly Schedule

First Half

Week Topics Reading
Week  1
1/27
  • Friday
    • Introduction
      • Syllabus
      • Digital circuits

BuickEngine1973.jpgMercedesEngine2012.jpg 

Skip Chapter 1.
Week 2
1/30
  • Wednesday
    • Boolean functions
    • canonical forms: the minterm canonical form

CSC270 2b or not 2b.png

Start your reading with Chapter 2 on Boolean Algebra.

  • Binary numbers
  • Boolean algebra and Logic Gates
  • Basic theorems
  • Truth tables
  • Boolean functions
  • Canonical forms


George Boole in zeros and ones
George Boole

Week 3
2/6

Reading

  • Karnaugh Maps
  • Decoders
Week 4
2/13
  • Monday

AndGateWithTransistors.jpg TripleInputNorGate.png Eniac4.gif
(Image from Eniac image Clemson U.)

    • Comments on transistors and gates
    • Equivalent of a Decoder in Java or Python?
    • Karnaugh maps for 3, 4, and 5 variables.
    • Don't care conditions with Karnaugh maps
  • Wednesday
    • Exercises
    • Decoders with an enable input. (moving toward microprocessor architecture)
  • Friday
    • Decoders and Multiplexers in Computers
  • Chapter 4: decoders, multiplexers
Week 5
2/20
  • Monday
    • Something to study for a while...
RSFlipFlopNORs.png
    • Answer of the day: It's a sequential circuit: it behaves differently depending on initial conditions!
    • It's a machine with 2 states: it has a state diagram!
    • We cannot use a truth table to represent its behavior
    • It has memory: it can store a bit
    • Why does it work? Because the two gates that form this circuit can be eith blocking or passing, and when they are passing, the state, whichever it is, is stable.
    • End of the lecture was with timing diagrams, and showing that Q and Q' can be in either one of the possible cases: 01 or 10, and we show that on the timing diagram.
  • Wednesday
    • Toward the D Flip-Flop:
      • From RS to RS with 1 input only
      • From RS with 1 input only to RS with a pulse clock latch signal
      • From RS with a latch signal to a Master/Slave (sorry, this is the way it is coined) flip-flop
      • The D Flip-Flop. 74LS74 datasheet.
  • Friday
    • Comments on last lab:
      • A note on scale: http://htwins.net/scale2/
      • units are important! Know the difference between Volts, millivolts, seconds, milliseconds, microseconds, nanoseconds.
      • How does a scope work?
  • Chapter 5: synchronous sequential logic


Week 6
2/27
  • Monday
  • Finite State Machines: Moore vs. Mealy machines.
    • Two examples: a two-state oscillator, and a controlled oscillator
    • Designing a FSM that has a command input. If the command signal (cmd) is 1, the FSM oscillates. If the command signal is 0, the FSM stays in its current state.
      • Draw the state diagram
      • Figure out the number of flip-flops needed
      • Draw the State table, associating States to values of the Q output(s)
      • Draw the State Transition table.
      • Define the D inputs as a function of the Q outputs
      • Draw the FSM with flip-flop(s) and combinational logic
      • Verify with a timing diagram that the circuit works
  • Wednesday
  • Friday
  • Chapter 5: synchronous sequential logic


Week 7
3/5
  • Monday
    • The JK Flip-Flop
    • diagram
    • Exercise 1: Let's figure out how to design a FSM without external input first.
    • Exercise 2: Same idea, with a user input.
  • Wednesday
Week 8
3/12










SpringBreak.png

Second Half

Week Topics Reading
Week  1
3/26
WhiteSpace3.png




WhiteSpace2.png

Week 10
4/02


    • Conditional Branches.
      • BEQ, BNE, BGT (signed), BLT (signed)
      • A good dec/hex converter that works with signed numbers: binaryconvert.com
  • Wednesday
    • Engineering: Deciphering how the 6811 energizes the Address, Data and Control busses when it runs a program.
CSC270 FigureA14.png CSC270 TableFigureA14.png
(taken from the 6811 Reference Manual)
    • The main signals: E, R/W, and LIR
6811MainSignalsE RW LIR.png
    • Screen shots:

CSC270TimingDiagramLoop1.jpg

CSC270TimingDiagramLoop2.jpg

CSC270TimingDiagramLoop3.jpg

CSC270TimingDiagramLoop4.jpg

  • Friday
    • Sentence of the week, found in the 6811 Pocket Reference:
      The term Big Endian comes from Jonathan Swift’s satire Gulliver’s Travels. In Swift’s book, a Big Endian refers to a person who cracks their egg on the big end. The Lilliputians considered the big endians as inferiors. The big endians fought a long and senseless war with the Lilliputians who insisted it was only proper to break an egg on the little end.
    • Negative numbers in binary
    • Condition Codes: HINZVC
      • Z: Zero
      • V: Overflow
      • N: Negative
      • C: Carry
      • H: Half-Carry
      • I: Interrrupt Mask
    • Conditional Branches
      • BEQ
      • BNE
      • BGT
      • BLT
      • BRA (unconditional)
  • Negative (signed) numbers are covered in the 6811 Manual, In Section 3.
  • The Condition Code register is also covered in Section 3.
Week 11
4/09
  • Monday
    • Review of negative numbers.
    • New question: How can we extend a positive or negative number from 1 byte to two bytes?
    • Review Condition Code Register
    • Rule:
      • Every instruction that makes information pass through ALU will modify the CC bits (HINZVC). Typical instructions: Add, Sub, Shift, Rotate, Multiply, Divide, And, Or, Not, Xor, and Compare (which is a subtract operation).
      • Special instructions can modify individual bits: For example CLC and SEC can be used to clear or set the Carry bit.
      • Some instruction can have different outcome depending on some of the CC bits: Conditional Branches: BEQ, BNE, BLT, BGT.
    • The Compare (CMP) instruction:
      • It is a subtract operation that does not store the result of the subtraction, but instead sets the HINZVC bit depending on the result of the subtraction.
    • The Conditional Branch instructrions:
      • They operate as follows:
  if specific CC bit == some predefined value:
        PC = PC + displacement
  else:
        PC = PC + 1
For example:
   BEQ, (Branch if equal)
   if  Z bit == 1:
       PC = PC + displacement
   else:
       PC = PC + 1
      • Computing the displacement in hex. Case #1
      LDAA   alpha
      CMPA   #5	      	  ; alpha==5?
      BEQ    same
diff: ...     	      	  ; go here if != 5
      ...
      ...
same: ...     	      	  ; go here if == 5
Assume BEQ is at Address 0010 and same at Address 0023. Address of diff label is at 0012 (because BEQ label takes 2 bytes). 0012 + displacement must be equal to 0023. Hence displacement is 11 (only 2 digits, as only 1-byte displacement allowed).
      • Case #2: branching back
same: ...                 ; go here if == 5

      LDAA   alpha
      CMPA   #5           ; alpha==5?
      BEQ    same
diff: ...     	      	  ; go here if != 5
      ...
      ...
Assume BEQ is at address 0020, and same is at 0005. The displacement must be a negative number that, once added to 0022 (because that's the address of the instruction after BEQ), will result in 0005.
   0022
+  XXXX
---------
   0005
There are many different ways to compute XXXX. Which ever way we find, we find XXXX = FFE3, so the displacement is the lower byte, or E3.


  • Wednesday
    • Class Quiz:
      • Question 1: We know how to build an 8-bit adder with gates. How do we build an 8-bit subtracter?
      • Question 2: How can we build an 8-bit module that either adds or subtracts depending on a single command signal? If the signal is 0, the module adds two 8-bit values. If the signal is 1, the module subtracts one from the other.
    • Building a 1-bit output port
    • The 6811-Kit Memory Map
  • Friday
    • Question in need of answers: How many different addresses does your Lab-9 LED respond to?
    • Overview of Homework #9
    • Continuation of Lab #9.
  • Reading
    • The condition code register is covered in Section 3.5 of the Motorola 6811 Manual. Skip Section 4.
Week 12
4/16
  • Monday
    • Preparation for Friday's possible visit (parents/students in class)
    • A review of how memory-mapped I/O works (output). The general rules
    • Building an input port
      • Basic rules of electronics when circuits exchange information:
      • µP outputting data bit to many devices (ROM, RAM, I/O ports)
      • µP receiving data from several devices
      • Designing a 1-bit input port. The main players
      • The software driver for inputting the bit.
    • The alternative to memory-mapped I/O: dedicated I/O
  • Wednesday
CentronicsProtocole.png
    • Prepartion for Lab #10
    • Lab #10
    • Presentation of Dedicated I/O
    • Advantages and disadvantages of Dedicated vs. Memory-Mapped I/Os
    • The Centronics interface (explained in this pdf).
    • Exercises
  • Friday
    • If ( Class visit )
      • Take a simple problem, develop it, wire it up, and demonstrate its good working conditions
    • else
      • {
        • Present current homework assignment
        • Question of the day: Why couldn't you set the LED from the keyboard in the one before the last lab?
        • Adding RAM to the 6811. The 2114 1Kx4 static RAM chip.
          2114TimingDiagram.gif
          (image taken from www.doulos.com)
        • Observation: Interfacing 2114 to 6811 is almost pin-to-pin wiring. This is because 2114 designed to be compatible with most processors. This in turns forces manufacturer to design new hardware to be compatible with older parts ==> we are stuck in a generic type of architecture (which is based on von Neumann architecture at a higher-level).
      • }
Week 13
4/23
CoolRunner-II kit.jpg
  • Monday
    • Review of the last homework assignment
    • Review of last lab: setting two LEDs to blink
    • Introduction to Xilinx's CPLD II, Xilinx's ISE 13.4, and the CoolRunner II kit.

    • This section is only visible to computers located at Smith College

  • Wednesday
    • Xilinx ISE:
      This section is only visible to computers located at Smith College

  • Friday
Week 14
4/30
  • Monday
    • Introduction to Verilog.
      This section is only visible to computers located at Smith College

  • Wednesday: Last Day of Class
    • Continuation of Verilog presentation. We stopped at Exercise 1 on Monday. We continue from there...
    • Presentation of the Final Exam.
  • All the references for this week's material can be found at the bottom of this page, in the Xilinx and Verilog sections.



Links and Resources

Printing

  • How to print a text file (pure ASCII, not an MS Word document) from a beowulf account to the printer @ FH354:
  cprint -15  myFile.txt
  • How to print a pdf from a beowulf account to the printer @ FH354:
  lpr -P ford354 max232.pdf
  • How to print an image to the same printer, from a beowulf account:
  convert myImage.jpg  myImage.pdf
  lpr -P ford354 myImage.pdf

Programs

Software

Demos of Various Circuit

HadesGate.png























Free Circuit CAD Systems

(the video shows an analog circuit, but logic gates are also supported)



























PSpice 9

Pspice9.jpg
  • Pspice 9, Student version. An nice alternative to drawing schematics by hand.
  • This is a Windows version. (I have tried to make it work under wine/Mac OS X but haven't been able to make it load the libraries correctly)
  • Make sure you select the schematics option when installing the software.
  • Select Tools/Schematics when starting the editor
  • The schematics editor is located in C:\Program Files\OrCAD_Demo\PSpice\PDesign.exe upon installation.
  • Download here!
  • PSpice Tutorial

Integrated Circuit Data-Sheets

Ic.jpg

Motorola 68HC11 Documentation

6811.jpg



Verilog/CPLD

CoolRunner-II kit2.jpg

Books

Web Resources

The following links point to good tutorials.

Xilinx and CPLDs
























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