TECH: Okay, what's the "E" stand for in 68B09EP?

[Mark (UK)]

Hi all!

I've ust been looking at some Atari Star Wars boards, and one had a
buggered CPU. I put in an MC68B09P expecing life, and there was none.
Put in another, still nothing. Put in an MC68B09EP, and it works fine?

So what is the difference? What does the E mean? I've also found in my
CPU goodie pile an MC68B09CP?

All help appreciated.

Yours, Mark.

 

[Craig Yarbrough]

Mark, you don't have a datasheet? ;-)

- Craig

"Mark (UK)" <jumbos.bazzar@btopenworld.com> wrote in message
news:c1olot$1lh$1@hercules.btinternet.com...

Hi all!

I've ust been looking at some Atari Star Wars boards, and one had a
buggered CPU. I put in an MC68B09P expecing life, and there was none.
Put in another, still nothing. Put in an MC68B09EP, and it works fine?

So what is the difference? What does the E mean? I've also found in my
CPU goodie pile an MC68B09CP?

All help appreciated.

Yours, Mark.

 

[Steve Muccione]

different pinouts

check out

http://store.americanmicrosemiconductor.com/microprocessor-ics-microprocessors-8-bit.html

the P version is actually much faster then the EP

steve

"Mark (UK)" <jumbos.bazzar@btopenworld.com> wrote in message
news:c1olot$1lh$1@hercules.btinternet.com...

Hi all!

I've ust been looking at some Atari Star Wars boards, and one had a
buggered CPU. I put in an MC68B09P expecing life, and there was none.
Put in another, still nothing. Put in an MC68B09EP, and it works fine?

So what is the difference? What does the E mean? I've also found in my
CPU goodie pile an MC68B09CP?

All help appreciated.

Yours, Mark.

 

[ChrisB]

E is external clocking. You have to supply dual phased clocking sigs to the
E part, and the plain part you supply a simple clock.

Chris


"Steve Muccione" <home*DOT*muccione@verizon.net> wrote in message
news:ZXQ%b.2255$TF2.1138@nwrdny02.gnilink.net...

different pinouts

check out


http://store.americanmicrosemiconductor.com/microprocessor-ics-microprocessors-8-bit.html

the P version is actually much faster then the EP

steve

"Mark (UK)" <jumbos.bazzar@btopenworld.com> wrote in message
news:c1olot$1lh$1@hercules.btinternet.com...
Hi all!

I've ust been looking at some Atari Star Wars boards, and one had a
buggered CPU. I put in an MC68B09P expecing life, and there was none.
Put in another, still nothing. Put in an MC68B09EP, and it works fine?

So what is the difference? What does the E mean? I've also found in my
CPU goodie pile an MC68B09CP?

All help appreciated.

Yours, Mark.

 

[Craig Hart]

E = requires External clock. Thus, the pinouts are also slightly
different...

"Mark (UK)" <jumbos.bazzar@btopenworld.com> wrote in message
news:c1olot$1lh$1@hercules.btinternet.com...

Hi all!

I've ust been looking at some Atari Star Wars boards, and one had a
buggered CPU. I put in an MC68B09P expecing life, and there was none.
Put in another, still nothing. Put in an MC68B09EP, and it works fine?

So what is the difference? What does the E mean? I've also found in my
CPU goodie pile an MC68B09CP?

All help appreciated.

Yours, Mark.

 

[Mark (UK)]

Hiya!

Nope, or I wouldn't have asked. I couldn't find a datasheet online
either, except at those 'pay me $$$' sites, and I refuse to use any of
those.

If anyones got a .pdf datasheet, it would be appreciated.

Thanks. Yours, Mark.

Craig Yarbrough wrote:

Mark, you don't have a datasheet? ;-)

- Craig

"Mark (UK)" <jumbos.bazzar@btopenworld.com> wrote in message
news:c1olot$1lh$1@hercules.btinternet.com...

Hi all!

I've ust been looking at some Atari Star Wars boards, and one had a
buggered CPU. I put in an MC68B09P expecing life, and there was none.
Put in another, still nothing. Put in an MC68B09EP, and it works fine?

So what is the difference? What does the E mean? I've also found in my
CPU goodie pile an MC68B09CP?

All help appreciated.

Yours, Mark.

 

[Mark (UK)]

Hiya!

Thanks, but that's one of those $$$ sites, I don't use them out of
principle.

Yours, Mark.

Steve Muccione wrote:

different pinouts

check out

http://store.americanmicrosemiconductor.com/microprocessor-ics-microprocessors-8-bit.html

the P version is actually much faster then the EP

steve

"Mark (UK)" <jumbos.bazzar@btopenworld.com> wrote in message
news:c1olot$1lh$1@hercules.btinternet.com...

Hi all!

I've ust been looking at some Atari Star Wars boards, and one had a
buggered CPU. I put in an MC68B09P expecing life, and there was none.
Put in another, still nothing. Put in an MC68B09EP, and it works fine?

So what is the difference? What does the E mean? I've also found in my
CPU goodie pile an MC68B09CP?

All help appreciated.

Yours, Mark.

 

[ChrisB]

"Mark (UK)" <jumbos.bazzar@btopenworld.com> wrote in message
news:c1pq9c$juj$2@sparta.btinternet.com...

If anyones got a .pdf datasheet, it would be appreciated.

Here ya go;
http://www.nteinc.com/specs/6800to6899/pdf/nte6809_e.pdf

I've also found in my
CPU goodie pile an MC68B09CP?

CMOS version?

Chris

 

[Steve Muccione]

Ah.. damn.. didn't notice... they quick link they had contained some short
blurbs that implied that the chips are definately not compatible...

probably could have solved your question quickly (that is can I do a drop in
replacement).

steve

"Mark (UK)" <jumbos.bazzar@btopenworld.com> wrote in message
news:c1pqk6$juj$4@sparta.btinternet.com...

Hiya!

Thanks, but that's one of those $$$ sites, I don't use them out of
principle.

Yours, Mark.

Steve Muccione wrote:

different pinouts

check out


http://store.americanmicrosemiconductor.com/microprocessor-ics-microprocessors-8-bit.html

the P version is actually much faster then the EP

steve

"Mark (UK)" <jumbos.bazzar@btopenworld.com> wrote in message
news:c1olot$1lh$1@hercules.btinternet.com...

Hi all!

I've ust been looking at some Atari Star Wars boards, and one had a
buggered CPU. I put in an MC68B09P expecing life, and there was none.
Put in another, still nothing. Put in an MC68B09EP, and it works fine?

So what is the difference? What does the E mean? I've also found in my
CPU goodie pile an MC68B09CP?

All help appreciated.

Yours, Mark.

 

[Mark (UK)]

Hiya!

Cheers, that helps with the pinouts - does anyone have the Motorola sheet?

Yours, Mark.

ChrisB wrote:

"Mark (UK)" <jumbos.bazzar@btopenworld.com> wrote in message
news:c1pq9c$juj$2@sparta.btinternet.com...

If anyones got a .pdf datasheet, it would be appreciated.


Here ya go;
http://www.nteinc.com/specs/6800to6899/pdf/nte6809_e.pdf


I've also found in my
CPU goodie pile an MC68B09CP?



CMOS version?

Chris

 

[Mark (UK)]

Hiya!

I managed to answer that question all by myself. IE:

MC68B09P = Now my failure is complete!
MC68B09EP = May the force be with me!

Yours, Mark.

Steve Muccione wrote:

Ah.. damn.. didn't notice... they quick link they had contained some short
blurbs that implied that the chips are definately not compatible...

probably could have solved your question quickly (that is can I do a drop in
replacement).

steve

"Mark (UK)" <jumbos.bazzar@btopenworld.com> wrote in message
news:c1pqk6$juj$4@sparta.btinternet.com...

Hiya!

Thanks, but that's one of those $$$ sites, I don't use them out of
principle.

Yours, Mark.

Steve Muccione wrote:


different pinouts

check out



http://store.americanmicrosemiconductor.com/microprocessor-ics-microprocessors-8-bit.html

the P version is actually much faster then the EP

steve

"Mark (UK)" <jumbos.bazzar@btopenworld.com> wrote in message
news:c1olot$1lh$1@hercules.btinternet.com...


Hi all!

I've ust been looking at some Atari Star Wars boards, and one had a
buggered CPU. I put in an MC68B09P expecing life, and there was none.
Put in another, still nothing. Put in an MC68B09EP, and it works fine?

So what is the difference? What does the E mean? I've also found in my
CPU goodie pile an MC68B09CP?

All help appreciated.

Yours, Mark.

 

[Don]

I have a Motorola MC6809-MC6809E Microprocessor Programming Manual if you
need some pages scanned (PDF or GIF). It's a couple of hundred pages cover
to cover so scanning the whole thing is a little impractical. Post back if
you are interested.

The 6809E was also used in the old Radio Shack Color Computers.

Don





"Mark (UK)" <jumbos.bazzar@btopenworld.com> wrote in message
news:c1olot$1lh$1@hercules.btinternet.com...

Hi all!

I've ust been looking at some Atari Star Wars boards, and one had a
buggered CPU. I put in an MC68B09P expecing life, and there was none.
Put in another, still nothing. Put in an MC68B09EP, and it works fine?

So what is the difference? What does the E mean? I've also found in my
CPU goodie pile an MC68B09CP?

All help appreciated.

Yours, Mark.

 

[Jed Margolin]

"Mark (UK)" wrote:

Hiya!

Nope, or I wouldn't have asked. I couldn't find a datasheet online
either, except at those 'pay me $$$' sites, and I refuse to use any of
those.

If anyones got a .pdf datasheet, it would be appreciated.

Thanks. Yours, Mark.

Craig Yarbrough wrote:

Mark, you don't have a datasheet? ;-)

- Craig

"Mark (UK)" <jumbos.bazzar@btopenworld.com> wrote in message
news:c1olot$1lh$1@hercules.btinternet.com...

Hi all!

I've ust been looking at some Atari Star Wars boards, and one had a
buggered CPU. I put in an MC68B09P expecing life, and there was none.
Put in another, still nothing. Put in an MC68B09EP, and it works fine?

So what is the difference? What does the E mean? I've also found in my
CPU goodie pile an MC68B09CP?

All help appreciated.

Yours, Mark.

You can get the 6809E datasheet at
http://www.gamearchive.com/General/Data_Sheets/6809.pdf .

It's the Hitachi datasheet which should be the same as the Motorola version.
(Hitachi was a second source.)

I used the 'E' version (external quadrature clock inputs) because the
version with the onboard quadrature clock circuit did not guarantee the
timing between the input clock and the memory bus signals, which would have
been a problem when connecting it to external hardware like the vector
generator.


Jed Margolin

 

[Mark (UK)]

Hiya!

Thanks for the link to the datasheet. Nice to know the reasons too
behind using one version or the other!

Yours, Mark.

Jed Margolin wrote:

"Mark (UK)" wrote:

Hiya!

Nope, or I wouldn't have asked. I couldn't find a datasheet online
either, except at those 'pay me $$$' sites, and I refuse to use any of
those.

If anyones got a .pdf datasheet, it would be appreciated.

Thanks. Yours, Mark.

Craig Yarbrough wrote:


Mark, you don't have a datasheet? ;-)

- Craig

"Mark (UK)" <jumbos.bazzar@btopenworld.com> wrote in message
news:c1olot$1lh$1@hercules.btinternet.com...


Hi all!

I've ust been looking at some Atari Star Wars boards, and one had a
buggered CPU. I put in an MC68B09P expecing life, and there was none.
Put in another, still nothing. Put in an MC68B09EP, and it works fine?

So what is the difference? What does the E mean? I've also found in my
CPU goodie pile an MC68B09CP?

All help appreciated.

Yours, Mark.




You can get the 6809E datasheet at
http://www.gamearchive.com/General/Data_Sheets/6809.pdf .

It's the Hitachi datasheet which should be the same as the Motorola version.
(Hitachi was a second source.)

I used the 'E' version (external quadrature clock inputs) because the
version with the onboard quadrature clock circuit did not guarantee the
timing between the input clock and the memory bus signals, which would have
been a problem when connecting it to external hardware like the vector
generator.


Jed Margolin