RISC Microprocessor...

[Karol30]

Hello all,

One of my friends has an arcade jamma board which he dropped and damaged the
microprocessor. The part is labeled ORION IDT 79R4600-100MS. Is it possible if
I purchase a new one it will work? I am unsure how they work, do they get
programmed with sets of instructions or are they like PC processors where you
can swap a dead one with a new one? I am experienced in soldering these type of
SMT components so soldering will be no problem.

My search for this part has not been an easy one either. Any reccomendations of
sites to try? Here is a list of what i've tried searching.

www.arrow.com
www.avnet.com
www.mouser.com
www.digikey.com
www.future-active.com
www.alliedelec.com

Any help is greatly appreciated!!! TIA!!!!

 

[Karol30]

Yes, it it is still available in the same packaging as the broken one.
The manufacturers web site only mentions 208 pin PQFP (DP) and 79 pin
PGA (G). I don't know what package type MS is.

I believe its the 208 pin PQFP like in the picture below. I tried to take a
picture of the processor but my camera did a horrible job.

http://members.aol.com/karol30/idt2.jpg

According to the data sheet at the time they were calling it MQUAD 208

Have you tried Google? This is the first hit when searching for "IDT R4600"

Yeah I found it in a few places but they want a minimum order of $500!!

I will try calling IDT after the holidays and see if they will help me.

Thanks alot for your help!!

 

[Karol30]

Here is a picture of the damage.

http://members.aol.com/karol30/damage.jpg

 

[Ross Herbert]

On 01 Jan 2005 14:07:14 GMT, karol30@aol.com (Karol30) wrote:

Here is a picture of the damage.

http://members.aol.com/karol30/damage.jpg

The damage appears to be only to the mangled pins on one side. The IC
package itself doesn't seem to be physically damaged as far as I can
tell so unless it was powered up when he dropped it this may be the
only damage (I assume the crap on the top is the remains of an
adhesive paper label). If this is correct, why not try to resurrect
the damaged pins - you've got nothing to lose?

 

[Karol30]

On Sun, 02 Jan 2005 07:08:06 GMT, Ross Herbert <rherber1@bigpond.net.au> wrote:

The damage appears to be only to the mangled pins on one side. The IC
package itself doesn't seem to be physically damaged as far as I can
tell so unless it was powered up when he dropped it this may be the
only damage (I assume the crap on the top is the remains of an
adhesive paper label). If this is correct, why not try to resurrect
the damaged pins - you've got nothing to lose?

Yeah im going to try to fix it. I got a feeling though that the legs are going
to be weak and break trying to put them in their places. Thats why I was
looking for a replacement before it happens. And yeah the crap on top is from a
label. I was able to fix the 3 legs that were damaged on the corner at home.
The rest are to close and I do not have the proper tools at home to do those.

Thanks

 

[Goran Larsson]

In article <20041231042959.07944.00002567@mb-m07.aol.com>,
Karol30 <karol30@aol.com> wrote:

The part is labeled ORION IDT 79R4600-100MS.

The R4600 is a 64 bit high performance processor.

Is it possible if
I purchase a new one it will work?

Probably.

... or are they like PC processors ...

No. This is a real processor using the 64 bit MIPS instruction set. The
PC processor is a quaint toy compared to this.

can swap a dead one with a new one?

Yes, it it is still available in the same packaging as the broken one.
The manufacturers web site only mentions 208 pin PQFP (DP) and 79 pin
PGA (G). I don't know what package type MS is.

My search for this part has not been an easy one either. Any reccomendations of
sites to try? Here is a list of what i've tried searching.

Have you tried Google? This is the first hit when searching for "IDT R4600"

< http://www.cpu-collection.de/?l0=co&l1=IDT&l2=R4600 >

and it gave this address at the manufacturer with ordering information
and a huge number of document links.

< http://www1.idt.com/pcms/products.taf?catID=58767&genID=79R4700 >

IDT should be able to tell you where to buy it, perhaps from
Insight Electronics
< http://www.insight-electronics.com >

Insight Electronics, however, is a company that discriminates against
some of their visitors by demanding the use of certain web browsers.

| The browser which you are using is not supported by this site.
| You will need to upgrade your browser to Microsoft Internet
| Explorer 5.0 or greater...

I wouldn't buy anything from such a stupid company.

--
Göran Larsson http://www.mitt-eget.com/

 

[mc]

"Goran Larsson" <hoh@invalid.invalid> wrote in message
news:I9L0oG.JqG@approve.se...

http://www.insight-electronics.com

Insight Electronics, however, is a company that discriminates against
some of their visitors by demanding the use of certain web browsers.

| The browser which you are using is not supported by this site.
| You will need to upgrade your browser to Microsoft Internet
| Explorer 5.0 or greater...

I wouldn't buy anything from such a stupid company.

I agree. It is actually rather hard to make a web site that is
browser-specific, and I have never done so.

I got really tired of the time, back in the 1990s, when every web site
seemed to have a message saying you needed this week's version of Netscape.
As for Microsoft IE, the latest version, in my opinion wisely, *drops* some
functionality compared to the previous one, in order to make it more secure.
But some of the most demanding web sites no longer work with it!

But if it doesn't display in Opera, Firefox, etc., in my opinion it isn't
HTML.

 

[Chaos Master]

mc stated:

I agree. It is actually rather hard to make a web site that is
browser-specific, and I have never done so.

I got really tired of the time, back in the 1990s, when every web site
seemed to have a message saying you needed this week's version of Netscape.
As for Microsoft IE, the latest version, in my opinion wisely, *drops* some
functionality compared to the previous one, in order to make it more secure.
But some of the most demanding web sites no longer work with it!

But if it doesn't display in Opera, Firefox, etc., in my opinion it isn't
HTML.

If the broken site (the one that tells you that you need to use a given
browser) reads the 'User-Agent' string from browser, you can use User
Agent Extension in Firefox or Mozilla.

I use it to "lie" that I am using IE.
--
Chaos MasterŽ, posting from Canoas, Brazil - 29.55° S / 51.11° W / GMT-
2h / 15m


"Now: the 3-bit processor, with instructions:
1. NOP - does nothing, increase PC. / 2. HLT - does nothing, doesn't
increase PC
3. MMX - enter Pentium(r) emulation mode; increase PC / 4. LCK - before
MMX: NOP ; after MMX: executes F0 0F C7 C8
5. HCF - Halt and Catch Fire / 6. EPI - Execute Programmer
7. DPC - Decrease PC"

 

[mc]

"Chaos Master" <e-mail@is.INVALID> wrote in message
news:MPG.1c427936ea34b805989845@130.133.1.4...

If the broken site (the one that tells you that you need to use a given
browser) reads the 'User-Agent' string from browser, you can use User
Agent Extension in Firefox or Mozilla.

I use it to "lie" that I am using IE.

Almost all Opera users identify as IE. That is Opera's default. Its
purpose, among other things, it to prevent the development of Opera-specific
exploits. The malware site would never know when a potential victim came
along.