
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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1- Write a program in assembly language for the 8085 microprocessor to send 10 bytes of data located at
the memory address (3000h) using SOD at a baud rate of 1200.
Information: The 8085 processor operates at a frequency of 3.072 MHz.
And two high pulses must be sent before each byte (start bits) and one low pulse after each byte (end
bits).
You can use this flowchart, but you should notice that this flowchart deals with one byte, and you are
required to deal with 10 bytes
Transmit
No
Set up Character
Bit Counter
Send Start Bit
Wait Bit Time
Get Character
in Accumulator
Output Bit
Using Do
Wait Bit Time
Rotate Next Bit
in Do
Decrement Bit Counter
Is
It Last
Bit?
Yes
Add Parity
if Necessary
• Send Two
Stop Bits
Return
(a)
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