Register Transfer Language

[DartmanX]

I'm currently trying to survive a computer organization class, and have
run into a confusing problem. Please note I'm not asking people to do
my homework for me, but I could use some assistance.

The following statement is the basis of my trouble:

IF a = 1 THEN copy X to W; otherwise copy Z to Y

My RTL statements then look like this:

a:W<--X
a':Y<--Z

The question is, I don't know how to implement this using hardware
(i.e. multiplexers, flip flops, logic gate, etc).

We are using John D. Caprinelli's text (Computer Systems Organization
and Architecture), and unfortunately this is one area where I've found
the text is weak: he explains and diagrams basics, but leaves the
reader on their own to integrate the concepts.

Thanks for any assistance you can give.

Jason

 

[Robert Baer]

I'm currently trying to survive a computer organization class, and have
run into a confusing problem. Please note I'm not asking people to do
my homework for me, but I could use some assistance.

The following statement is the basis of my trouble:

IF a = 1 THEN copy X to W; otherwise copy Z to Y

My RTL statements then look like this:

a:W<--X
a':Y<--Z

The question is, I don't know how to implement this using hardware
(i.e. multiplexers, flip flops, logic gate, etc).

We are using John D. Caprinelli's text (Computer Systems Organization
and Architecture), and unfortunately this is one area where I've found
the text is weak: he explains and diagrams basics, but leaves the
reader on their own to integrate the concepts.

Thanks for any assistance you can give.

Jason

Use a gate, in this case, an and circuit.
Inputs: A, X; output:W; Inputs: A', Z; output:Y.

 

[Don Lancaster]

Use a gate, in this case, an and circuit.
Inputs: A, X; output:W; Inputs: A', Z; output:Y.

a 1 eq {/w x store}{/w y store} ifelse , obviously.

--
Many thanks,

Don Lancaster voice phone: (928)428-4073
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
rss: http://www.tinaja.com/whtnu.xml email: [email protected]

Please visit my GURU's LAIR web site at http://www.tinaja.com

 

[Rich Grise]

IF a = 1 THEN copy X to W; otherwise copy Z to Y

My RTL statements then look like this:

a:W<--X
a':Y<--Z

The question is, I don't know how to implement this using hardware
(i.e. multiplexers, flip flops, logic gate, etc).

Either lok for "data selector", or learn some basic Boolean algebra.
Combinatorial logic is not that hard.

In hardware, it can be done with an inverter and a couple of ANDs.

Good Luck!
Rich

 

[Spehro Pefhany]

Either lok for "data selector", or learn some basic Boolean algebra.
Combinatorial logic is not that hard.

In hardware, it can be done with an inverter and a couple of ANDs.

Good Luck!
Rich

If upper case letters are used to refer to vectors you might do better
with a mux, in general.


Best regards,
Spehro Pefhany

 

[Rich Grise]

If upper case letters are used to refer to vectors you might do better
with a mux, in general.

Well, it's been a number of years since I've heard of Resistor-Transistor
Logic being used anywhere. ;-)

Cheers!
Rich