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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...
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Transcribed Image Text:process (present state, reqx, reqy)
begin
antx < '0' gnty s 0 next state < poll x
case presentstate is
when grant x >
gntx < '1';
iE (Writex-'1') then outx < inx; end if:
if (reqx-'1') then
next state <= grant x;
else
next state <= poll y;
end if;
when grant y =>
gnty < 0';
gntx <= '0';
if (writey='1') then outx <= iny; end if;
if (reqy='1') then
next state <= grant_y;
gnty <= '1';
else
next state <= poll_x;
end if;
when poll x
=D>
gntx <= '0';
if (reqx='l') then
next state <= grant_x;
else
gnty <= '0';
next state <= poll y;
end if;
when poll_y
gntx <= '0';
if (reqy='1') then
next state <= grant y;
gnty <= '0';
else
next state <=
poll x;
end if;
when others
end case;
end if;
end process;
Figure Q4
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