EE 308
Course Review

• Arithmetic
  • Binary, Hex
  • Decimal to Hex, Hex to Decimal conversion
  • Unsigned, Signed (Two's Complement)
  • Carry (Borrow)
  • Overflow
• Addressing Modes
  • INH
  • IMM
  • DIR
  • EXT
  • INDX, INDY
  • REL
• HC11 Instructions
• HC11 Machine Code
  • Decoding HC11 Instructions (op-code to instruction cross reference table)
  • Execution cycles
  • Instruction timing
• Programming
  • Assembly (know how to read, will not ask for program to be written in assembly)
  • C
  • Arithmetic
  • Loops
  • Arrays
  • Subroutines
    • What happens to stack, SP, PC
    • What happens on RTS
• Interrupts
  • How to enable
    • Masks for specific interrupts (e.g., SPIE, RTII, IC2I)
    • I-bit of CCR
    • X-bit of CCR
  • What happens to stack, SP, PC, CCR
  • What are interrupt vectors, and how do you set them.
  • How to write an interrupt service routine.
  • How to clear interrupt flags
• Expanded mode bus
  • Bus Timing
  • Interfacing
    • Address Decoding
    • Address Demultiplexing
• Parallel I/O
  • Single Chip
    • Port B - output
    • Port C - input or output (DDRC)
  • Expanded mode - 68B21 PIA
    • DDRA, DDRB access
    • CRA1, CRA2, CRB1, CRB2 setup
    • Handshaking
    • Interrupts and clearing interrupt flags
• Timer Subsystem
  • Timer Overflow
  • Real Time Interrupt
  • Input Capture
  • Output Compare
• Serial Peripheral Interface (SPI)
  • Master and Slave Modes
  • CPHA, CPOL
  • Clock Speed selection and setup
  • Slave Select procedures
  • Writing and reading SPI -- SPDR and waiting for transfer to finish
  • Interrupts
  • Setting and clearing SPIF
• 68HC68T1 Real Time Clock
  • Registers - writing and reading
  • Control Register -- crystal speed select, output select
  • Interrupt control register -- periodic interrupt enable
  • Clearing interrupts
• Serial Communications Interface (SCI)
  • Baud Rate
  • Enabling transmitter and receiver
  • TDRE and RDRF bits of SCSR
  • Clearing TDRE and RDRF flags

• A/D converter
  • Power on
  • Timing
  • Setup
    • Single vs. multiple channel (MULT bit of ADCTL)
    • 4 conversions vs. continuous conversions (SCAN bit of ADCTL)
  • CCF - how is it set and cleared