Reply by Peter Dickerson ●November 6, 20072007-11-06
<roland.hutter@web.de> wrote in message 
news:1194334737.444862.81420@o80g2000hse.googlegroups.com...

> On 19 Okt., 10:06, "Stan" <n...@none.invalid> wrote:
>> Hi,
>>
>> Does anyone can explain me
>> the difference bitween ARM7 and  ARM9 ?
>>
>> --
>> -Stan
>
> ARM7 has von Neumann architecture, ARM9 has Harvard Architecture.


In modern parlance that should be microarchitecture. That is, the basic 
implementation has separate instruction and data memeories (caches) and 
busses. However, the architecture (i.e. as seen by the programmer and even 
the EE) of both is that of a shared memory for instructions and data - von 
Neumann.

What the ARM9 does not provide is cache snooping so that instructions in the 
Icache are invalidated if data is written to the corresponding address. So 
care is needed with self modifying code.

Peter
Reply by ●November 6, 20072007-11-06
On 19 Okt., 10:06, "Stan" <n...@none.invalid> wrote:

> Hi,
>
> Does anyone can explain me
> the difference bitween ARM7 and  ARM9 ?
>
> --
> -Stan


ARM7 has von Neumann architecture, ARM9 has Harvard Architecture.

BR Dragon
Reply by Chris Maryan ●October 31, 20072007-10-31
On Oct 19, 5:06 am, "Stan" <n...@none.invalid> wrote:

> Hi,
>
> Does anyone can explain me
> the difference bitween ARM7 and  ARM9 ?
>
> --
> -Stan


This has some relevant info

http://www.arm.com/pdfs/comparison-arm7-arm9-v1.pdf
Reply by Stan ●October 31, 20072007-10-31
"karthikbalaguru" <karthikbalaguru79@gmail.com> a &#4294967295;crit dans le message de


> Major differences are as below :-
>
> Pipeline depth
> --------------------
> ARM7 - three-stage
> ARM9 - five-stage
>
> Typical MHz
> ------------------
> ARM7 - 80
> ARM9 - 150
>
> Architecture
> -------------------
> ARM7 - Von Neumann
> ARM9 - Harvard
>
> MIPSb/MHz  (MIPS are Dhrystone VAX MIPS)
> ------------------------------------------------------------------
> ARM7 - 0.97
> ARM9 - 1.1
>
> The ARM926EJ-S is the first ARM
> processor core to include the Jazelle technology, which accelerates
> Java bytecode execution.
>
> The ARM7TDMI was the first of a new range of processors introduced in
> 1995 by ARM.
>
> Karthik Balaguru
>


Thanks a lot !
--
- Stan
Reply by karthikbalaguru ●October 27, 20072007-10-27
On Oct 19, 2:06 pm, "Stan" <n...@none.invalid> wrote:

> Hi,
>
> Does anyone can explain me
> the difference bitween ARM7 and  ARM9 ?
>


Major differences are as below :-

Pipeline depth
--------------------
ARM7 - three-stage
ARM9 - five-stage

Typical MHz
------------------
ARM7 - 80
ARM9 - 150

Architecture
-------------------
ARM7 - Von Neumann
ARM9 - Harvard

MIPSb/MHz  (MIPS are Dhrystone VAX MIPS)
------------------------------------------------------------------
ARM7 - 0.97
ARM9 - 1.1

The ARM926EJ-S is the first ARM
processor core to include the Jazelle technology, which accelerates
Java bytecode execution.

The ARM7TDMI was the first of a new range of processors introduced in
1995 by ARM.

Karthik Balaguru
Reply by Ali ●October 23, 20072007-10-23
On Oct 23, 5:04 pm, "Tom Lucas"
<news@REMOVE_tlcs_THIS_dot_TO_fsnet_REPLY_dot_co.uk> wrote:

> "Ali" <abdulra...@gmail.com> wrote in message
>
> news:1193101531.467996.14440@e9g2000prf.googlegroups.com...
>
>
>
> > On Oct 19, 6:14 pm, "Tom Lucas"
> > <news@REMOVE_tlcs_THIS_dot_TO_fsnet_REPLY_dot_co.uk> wrote:
> >> "Stan" <n...@none.invalid> wrote in message
>
> >>news:ff9rt5$i6g$1@s1.news.oleane.net...
>
> >> > Hi,
>
> >> > Does anyone can explain me
> >> > the difference bitween ARM7 and  ARM9 ?
>
> >> Easy! ARM2 :-p
>
> > NO!
> > Should be -ARM2
>
> > (+ARM7) - (+ARM9) =  -ARM2
>
> <Flogging a dead horse> No, I think you'll find that the order of the
> variables is not specified by the statement and that the difference
> between the two is positive.


Thats very right. Maybe the binary operation is the correct solution
as recommended by another poster.


ali
Reply by Tom Lucas ●October 23, 20072007-10-23
"Ali" <abdulrazaq@gmail.com> wrote in message 
news:1193101531.467996.14440@e9g2000prf.googlegroups.com...

> On Oct 19, 6:14 pm, "Tom Lucas"
> <news@REMOVE_tlcs_THIS_dot_TO_fsnet_REPLY_dot_co.uk> wrote:
>> "Stan" <n...@none.invalid> wrote in message
>>
>> news:ff9rt5$i6g$1@s1.news.oleane.net...
>>
>> > Hi,
>>
>> > Does anyone can explain me
>> > the difference bitween ARM7 and  ARM9 ?
>>
>> Easy! ARM2 :-p
>
> NO!
> Should be -ARM2
>
> (+ARM7) - (+ARM9) =  -ARM2


<Flogging a dead horse> No, I think you'll find that the order of the 
variables is not specified by the statement and that the difference 
between the two is positive.
Reply by Ali ●October 22, 20072007-10-22
On Oct 19, 6:14 pm, "Tom Lucas"
<news@REMOVE_tlcs_THIS_dot_TO_fsnet_REPLY_dot_co.uk> wrote:

> "Stan" <n...@none.invalid> wrote in message
>
> news:ff9rt5$i6g$1@s1.news.oleane.net...
>
> > Hi,
>
> > Does anyone can explain me
> > the difference bitween ARM7 and  ARM9 ?
>
> Easy! ARM2 :-p


NO!
Should be -ARM2

(+ARM7) - (+ARM9) =  -ARM2
Reply by Stan ●October 21, 20072007-10-21
"Jim Granville" <no.spam@designtools.maps.co.nz> a &#4294967295;crit dans le message de 
news: 4718e41f$1@clear.net.nz...

> Tom Lucas wrote:
>> "Stan" <none@none.invalid> wrote in message 
>> news:ff9rt5$i6g$1@s1.news.oleane.net...
>>
>>>Hi,
>>>
>>>Does anyone can explain me
>>>the difference bitween ARM7 and  ARM9 ?
>>
>>
>> Easy! ARM2 :-p
>
> Close, but no cigar.
> a) Difference between ARM7 and ARM9 is 2
> and (slight guess here, keying off the root BIT i BITween )
> b) difference bitween ARM7 and  ARM9  is 10 ?
>
> :)


Sorry, the binary is my  native language ;-)

--
-Stan
Reply by Robert Adsett ●October 19, 20072007-10-19
On Oct 19, 1:07 pm, Jim Granville <no.s...@designtools.maps.co.nz>
wrote:

> Tom Lucas wrote:
> > "Stan" <n...@none.invalid> wrote in message
> >news:ff9rt5$i6g$1@s1.news.oleane.net...
>
> >>Hi,
>
> >>Does anyone can explain me
> >>the difference bitween ARM7 and  ARM9 ?
>
> > Easy! ARM2 :-p
>
> Close, but no cigar.
> a) Difference between ARM7 and ARM9 is 2


I though of that too, but came to the conclusion that ARM is a unit
not a number

:)

Robert