What is Harvard architecture? In what ways does Harvard and Von Neumann
architectures differ?
Recent computers use which architecture - Harvard or Von Neumann?

"priyasmita_guha@yahoo.co.in" <priyasmita_guha@yahoo.co.in> writes:

>What is Harvard architecture? In what ways does Harvard and Von Neumann
>architectures differ?
>Recent computers use which architecture - Harvard or Von Neumann?

You may want to enter each of these questions, unchanged, in the
search dialog field of www.google.com.

Oh, and recent computers use Intel architecture.

best regards
  Patrick

priyasmita_guha@yahoo.co.in wrote:

> What is Harvard architecture? In what ways does Harvard and Von Neumann
> architectures differ?
> Recent computers use which architecture - Harvard or Von Neumann?
> 
People here really don't like to do homework for others.

-- 
The e-mail address in our reply-to line is reversed in an attempt to
minimize spam.  Our true address is of the form che...@prodigy.net.

<priyasmita_guha@yahoo.co.in> wrote in message 
news:1140342396.201749.40910@g44g2000cwa.googlegroups.com...
> What is Harvard architecture? In what ways does Harvard and Von Neumann
> architectures differ?
> Recent computers use which architecture - Harvard or Von Neumann?
>

Harvard architecture uses separate I and D caches.  The IBM System/32 is 
a good example of Harvard architecture. 

"Del Cecchi" <delcecchiofthenorth@gmail.com> writes:
> Harvard architecture uses separate I and D caches.  The IBM
> System/32 is a good example of Harvard architecture.

801 used separate I and D caches ... that weren't hardware
consistent. recent posting that contains 25yr old email discussing
hardware announcement that had separate I and D cache (although
hardware consistent).  
http://www.garlic.com/~lynn/2006b.html#38 blast from the past ... macrocode

misc. posts mentioning 801
http://www.garlic.com/~lynn/subpubkey.html#801

-- 
Anne & Lynn Wheeler | http://www.garlic.com/~lynn/

Del Cecchi wrote:
> <priyasmita_guha@yahoo.co.in> wrote in message
> news:1140342396.201749.40910@g44g2000cwa.googlegroups.com...
> > What is Harvard architecture? In what ways does Harvard and Von Neumann
> > architectures differ?
> > Recent computers use which architecture - Harvard or Von Neumann?
> >
>
> Harvard architecture uses separate I and D caches.  The IBM System/32 is
> a good example of Harvard architecture.

Harvard refers to 2 memories, one stores data one stores instructions.
This terminology came into existance in the early 1950 (if not earlier)
and caches were not invented until 1968? (360/85).

Von Neumann refers to putting instructions into memory along with the
rest of the data.

Patrick Schaaf wrote:

> Priyasmita Guha wrote:
> 
>> Recent computers use which architecture - Harvard or Von Neumann?
> 
> Oh, and recent computers use Intel architecture.

Sometimes referred to as AMD64.

:-)

MitchAlsup@aol.com wrote:
> and caches were not invented until 1968? (360/85).

IIRC, it was invented by M. Wilkes around 1965, with the name
"slave memory".

<priyasmita_guha@yahoo.co.in> wrote in message 
news:1140342396.201749.40910@g44g2000cwa.googlegroups.com...
> What is Harvard architecture? In what ways does Harvard and Von Neumann
> architectures differ?
> Recent computers use which architecture - Harvard or Von Neumann?

Which recent computers ?

Microcontrollers or microprocessors ?

synchronous or asynchronous ?

How many bits ? 1, 2, 4, 8 , 16 , 32 , 64 or 128 ?

microchip pics use Harvard architecture
as do TI TMS320C6400 dsps which are vliw.

What about Princeton architecture ?

:-)

Alex 

MitchAlsup@aol.com wrote:
> Harvard refers to 2 memories, one stores data one stores instructions.
> This terminology came into existance in the early 1950 (if not earlier)
> and caches were not invented until 1968? (360/85).

Which can protect code from being manipulated by code as data.

> Von Neumann refers to putting instructions into memory along with the
> rest of the data.

It may be possible to have self-modifying code that manipulates
instructions
as data when they both reside in memory and sometimes look like data.

"priyasmita_guha@yahoo.co.in" <priyasmita_guha@yahoo.co.in> writes:

> What is Harvard architecture? 

Buildings designed by Walter Gropius, Jose Stert,Hugh Stubbins, Aalvar
Aalto and Le Corbusier
http://www.gsd.harvard.edu/library/map/building_architects.html


I hope that this nugget of information has immeasurably enhanced your homework.

"Alex Gibson" <news@alxx.org> wrote in message 
news:46acfqFa279aU2@individual.net...
>
> <priyasmita_guha@yahoo.co.in> wrote in message 
> news:1140342396.201749.40910@g44g2000cwa.googlegroups.com...
>> What is Harvard architecture? In what ways does Harvard and Von Neumann
>> architectures differ?
>> Recent computers use which architecture - Harvard or Von Neumann?
>
> Which recent computers ?
>
> Microcontrollers or microprocessors ?
>
> synchronous or asynchronous ?
>
> How many bits ? 1, 2, 4, 8 , 16 , 32 , 64 or 128 ?
>
> microchip pics use Harvard architecture
> as do TI TMS320C6400 dsps which are vliw.
>
> What about Princeton architecture ?
>


All the Ivy schools are equivalent ;-)

Pick the one you like ;-))



dk 

>
>
>
> All the Ivy schools are equivalent ;-)
>
> Pick the one you like ;-))

My favorite is the Bob Jones architecture.

It is a highly speculative design which offers advanced thread
speculation but without the draw back of an abort feature or any
technique to prevent unwanted speculation.  When a misspeculation
arises, the offending parent thread is rerouted to the 'prayer,
counseling and support unit', where it waits for a period of time,
until both the parent and child thread are dispatched to a 'welfare
coprocessor' which will slowly and inefficiently (due to heavy resource
stalls) execute the threads until they end naturally.  It has been
noted that since speculative child threads can in fact spawn more
speculative child threads, that the demands on the welfare processor
are quite high.

All of the simluations for this architecture are inconclusive, but the
authors firmly believe that this is an optimal architecture for
handling thread level speculation.

DK

"David Kanter" <dkanter@gmail.com> writes:

> My favorite is the Bob Jones architecture.
> 
> It is a highly speculative design which offers advanced thread
> speculation but without the draw back of an abort feature or any
> technique to prevent unwanted speculation.  When a misspeculation
> arises, the offending parent thread is rerouted to the 'prayer,
> counseling and support unit'

Amen brother.
Praise the Lawd and pass the white phosphorus.

Dan Koren <dankoren@yahoo.com> wrote:
> 
> All the Ivy schools are equivalent ;-)
> 
> Pick the one you like ;-))
> 

Except of course Stanford with its Stanford Industry Network aka SIN
architecture ;-) or SINAR for the long winded ;-))

> 
> 
> dk 
> 
> 

-- 
	Sander

+++ Out of cheese error +++

"Sander Vesik" <sander@haldjas.folklore.ee> wrote in message 
news:1142251457.613084@haldjas.folklore.ee...
> Dan Koren <dankoren@yahoo.com> wrote:
>>
>> All the Ivy schools are equivalent ;-)
>>
>> Pick the one you like ;-))
>>
>
> Except of course Stanford with its Stanford Industry Network aka SIN
> architecture ;-) or SINAR for the long winded ;-))
>


Since when does Stanford belong in the Ivy League?

There isn't enough starch in all of California for
even the smallest Ivy League liberal arts college!

;-)



dk