Homework Help is Here – Start Your Trial Now!
Engineering
Computer Engineering
a) Direct Port Addressing Mode: المحدد . For direct input operation, the data will be applied directly to destination register (AL or AX) using (IN instruction) as shown in the following equation: Direct Mode IN: { AX | AL}{Port Num} ■ For direct output operation a direct port number (8-bits) (0 to 255 (00-FF)) is used as shown in the following equation: Direct Mode OUT:: Port Num← Example: write an assembly code to get in the information in port 44 using direct addressing mode. ORG 100H IN AX, 44H Input two byte from port 44H, 45H to AX {AX AL} Example: write an assembly code to get out the information from AX to port 44 using direct addressing mode. ORG 100H Where did this number come from? MOV AX. 030CH RET OUT 44H,AX RET 0300 020d b) Indirect Port Addressing Mode: ■ For indirect input operation, the data will be applied indirectly using Data (DX) regist to the destination register (AL or AX) as shown in the following equation: Indirect Mode →

a) Direct Port Addressing Mode: المحدد . For direct input operation, the data will be applied directly to destination register (AL or AX) using (IN instruction) as shown in the following equation: Direct Mode IN: { AX | AL}{Port Num} ■ For direct output operation a direct port number (8-bits) (0 to 255 (00-FF)) is used as shown in the following equation: Direct Mode OUT:: Port Num← Example: write an assembly code to get in the information in port 44 using direct addressing mode. ORG 100H IN AX, 44H Input two byte from port 44H, 45H to AX {AX AL} Example: write an assembly code to get out the information from AX to port 44 using direct addressing mode. ORG 100H Where did this number come from? MOV AX. 030CH RET OUT 44H,AX RET 0300 020d b) Indirect Port Addressing Mode: ■ For indirect input operation, the data will be applied indirectly using Data (DX) regist to the destination register (AL or AX) as shown in the following equation: Indirect Mode →

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
See similar textbooks
icon
Related questions
Question
a) Direct Port Addressing Mode: المحدد . For direct input operation, the data will be applied directly to destination register (AL or AX) using (IN instruction) as shown in the following equation: Direct Mode IN: { AX | AL}{Port Num} ■ For direct output operation a direct port number (8-bits) (0 to 255 (00-FF)) is used as shown in the following equation: Direct Mode OUT:: Port Num← Example: write an assembly code to get in the information in port 44 using direct addressing mode. ORG 100H IN AX, 44H Input two byte from port 44H, 45H to AX {AX AL} Example: write an assembly code to get out the information from AX to port 44 using direct addressing mode. ORG 100H Where did this number come from? MOV AX. 030CH RET OUT 44H,AX RET 0300 020d b) Indirect Port Addressing Mode: ■ For indirect input operation, the data will be applied indirectly using Data (DX) regist to the destination register (AL or AX) as shown in the following equation: Indirect Mode →
Transcribed Image Text:a) Direct Port Addressing Mode: المحدد . For direct input operation, the data will be applied directly to destination register (AL or AX) using (IN instruction) as shown in the following equation: Direct Mode IN: { AX | AL}{Port Num} ■ For direct output operation a direct port number (8-bits) (0 to 255 (00-FF)) is used as shown in the following equation: Direct Mode OUT:: Port Num← Example: write an assembly code to get in the information in port 44 using direct addressing mode. ORG 100H IN AX, 44H Input two byte from port 44H, 45H to AX {AX AL} Example: write an assembly code to get out the information from AX to port 44 using direct addressing mode. ORG 100H Where did this number come from? MOV AX. 030CH RET OUT 44H,AX RET 0300 020d b) Indirect Port Addressing Mode: ■ For indirect input operation, the data will be applied indirectly using Data (DX) regist to the destination register (AL or AX) as shown in the following equation: Indirect Mode →
Expert Solution
steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Computer Networking: A Top-Down Approach (7th Edi…
Computer Networking: A Top-Down Approach (7th Edi…
Computer Engineering
ISBN:
9780133594140
Author:
James Kurose, Keith Ross
Publisher:
PEARSON
Computer Organization and Design MIPS Edition, Fi…
Computer Organization and Design MIPS Edition, Fi…
Computer Engineering
ISBN:
9780124077263
Author:
David A. Patterson, John L. Hennessy
Publisher:
Elsevier Science
Network+ Guide to Networks (MindTap Course List)
Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:
9781337569330
Author:
Jill West, Tamara Dean, Jean Andrews
Publisher:
Cengage Learning
Concepts of Database Management
Concepts of Database Management
Computer Engineering
ISBN:
9781337093422
Author:
Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:
Cengage Learning
Prelude to Programming
Prelude to Programming
Computer Engineering
ISBN:
9780133750423
Author:
VENIT, Stewart
Publisher:
Pearson Education
Sc Business Data Communications and Networking, T…
Sc Business Data Communications and Networking, T…
Computer Engineering
ISBN:
9781119368830
Author:
FITZGERALD
Publisher:
WILEY
SEE MORE TEXTBOOKS