Download presentation
Presentation is loading. Please wait.
Published byLaney Dempster Modified over 3 years ago
1
10/1/2014 Memory and I/O subsystem Reference: Introduction to Digital System by Ercegovac, Lang & Moreno, Wiley Publisher
2
10/1/2014 Basic components of a computer PROCESSOR; MEMORY SUBSYSTEM; INPUT/OUTPUT (I/O) SUBSYSTEM
3
10/1/2014 Memory hierarchy
4
10/1/2014 Specification of a simple processor System
5
10/1/2014 Memory Subsystem
6
10/1/2014 Entity Declaration of memory Subsystem LIBRARY ieee; USE ieee.std_logic_1164.all; USE WORK.comp_pkg.ALL; ENTITY Memory IS PORT (Addr : IN MAddrT ; -- memory address bus Length : IN STD_LOGIC; -- byte/word operand Rd, Wr : IN STD_LOGIC; -- access control signals Enable : IN STD_LOGIC; -- enable signal Rdy : OUT STD_LOGIC; -- access completion signal Data : INOUT WordT ); -- memory data bus END Memory;
7
10/1/2014 I/O subsystem
8
10/1/2014 Entity Declaration of I/O subsystem LIBRARY ieee; USE ieee.std_logic_1164.all; USE WORK.comp_pkg.ALL; ENTITY IO IS PORT (Addr : IN IOAddrT ; -- I/O address bus Length : IN STD_LOGIC; -- byte/word control Rd, Wr : IN STD_LOGIC; -- I/O access control Enable : IN STD_LOGIC; -- I/O enable control Rdy : OUT STD_LOGIC; -- I/O completion signal Data : INOUT WordT ); -- I/O data bus END IO;
9
10/1/2014 PROCESSOR Processor state 32 general-purpose registers (32-bits wide), called R0, R1,..., R31; a 24-bit Program Counter register (PC); a 4-bit Condition Register (CR); and a 32-bit Instruction Register (IR).
10
10/1/2014 Processor State
11
10/1/2014 Behavior of Processor
12
10/1/2014 Behavior of Instruction
13
10/1/2014 INSTRUCTION SEQUENCING SEQUENTIAL UNLESS – 1. UNCONDITIONAL BRANCH – 2. CONDITIONAL BRANCH
14
10/1/2014 Instruction Format
15
10/1/2014 Instruction Set
16
10/1/2014 Instruction set (cont.)
17
10/1/2014 Instruction set (cont.)
Similar presentations
© 2018 SlidePlayer.com Inc.
All rights reserved.
Ppt on fourth and fifth state of matter Ppt on project management training Ppt on earthquake free download Ppt on sectors of indian economy class 10 Ppt on collection framework in java Ppt on construction of 3 phase induction motor Ppt on earthquake in japan Ppt on areas of polygons Ppt on area of trapezium shape Ppt on integrity constraints in dbms