Instructor Notes

January 30, 2008

mat'ls

• yogurt containers
• arrow

quote

"I think there is a world market for about five computers." (Thomas Watson, Chairman, IBM, 1943)

Z80 assembly applied intro

• revisit 2s complement. From the wikipedia

   11100 000   (borrow)
    0000 1111  (15)
  − 0010 0011  (35)
  ===========
    1110 1100  (−20) 

• format of assembly code: label: opcode operands.
  • First operand is destination
• registers (Z80 user's guide page A1-3)
  • introduce only general-purpose, SP, PC for now
• Register's details: (A1-3 of Z80 user's guide)
  • Accumulator
  • HL: the 16-bit accumulator, sort-of
  • DE, BC
• simple instructions
  • NOP, DEC, INC, LD, CP, JP, JR, PUSH, POP, CALL, RET
• the flag register (chap 5 Z80 user's guide)
  • conditional: Z flag
• addressing modes: direct, indirect

special commands for the assembler

• ;
• include
• section "name",HOME[location]
• db

blog

• example of posting on blog
• assignment: make a "home page" on the blog for Monday.

discussion list

• make sure everybody has the email addy they want

IDE

download and install

• editor
• assembler
• emulator
• "hello world" test program

for another class

• instruction types
• addressing modes (TRS-80 book page 41 chap 3)

• GameBoy applied intro

additional resources

• students need links and references for supporting materials to read outside of class