DerekChiou_EE306_Spring2009_Lecture19

DerekChiou_EE306_Spring2009_Lecture19 -...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
© Derek Chiou Lecture 19: Traps, Interrupts,  Protection Prof. Derek Chiou University of Texas at Austin
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Administration Will try Skype as a way to do study group Group chat (instant message) Group conversation What time? One has said that Tuesday 5PM-6PM is not a good time Exam 2 Currently scheduled for the 13 th Keep on 13 th or move to the 15 th or the 20 th ? Later is not necessarily better Lab 2 due on Sunday, the 12 th at 11:59PM However, Lab 3 likely will be assigned before the 12 th at 11:59PM 4/6/2009 © Derek Chiou : EE306: Lecture 19 2
Background image of page 2
4/6/2009 © Derek Chiou : EE306: Lecture 19 Recap Bubble Sort Recursive Fibonacci revisited Outline Quick overview of Traps Protection 3
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Revisit Recursive Fib 4/6/2009 © Derek Chiou : EE306: Lecture 19 4 FIB PUSH_R1; save R1 PUSH_R7; save R7 ADD R1, R0, #-1 BRnz DONE ADD R0, R1, #0 JSR FIB PUSH_R0 ADD R0, R0, #-1 JSR FIB ADD R1, R0, #0 POP _R0 ADD R0, R0, R1 DONE POP _R7 POP_ R1 RET
Background image of page 4
Traps Provided sub-routines that do useful things Mostly I/O in LC-3 Some LC-3 Traps x20 GETC Read a single character from the keyboard. The character is not echoed
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 17

DerekChiou_EE306_Spring2009_Lecture19 -...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online