8375 are newer versions of what? What Amigas work with them?

[alexh]

amesie2 wrote:
The 8375 is used in the DKB Megachip to give 2MB of ram according to BBOH.

The Agnus page of BBoH is a little screwed up. It is not a 100% accurate source of information.

But yes you can find the 8372B 318069-03 and 8375 390544-01 on the DKB MegaChip. However it is not known if they changed the PCB to use one or the other.

[alexh]

Ilwrath wrote:

Alexh wrote:
Unfortunately most Agnus chips have exactly the same PLCC packaging but they have a widely different electrical pinout.

Really??  Which ones are these, so we can look out for them?

I got my information from Dean Brown (DKB)

http://groups.google.com/group/comp.sys.amiga.hardware/browse_thread/thread/5773722a3a19200e/eef6251d17b5d6d5?lnk=st&q=dean+brown+megachip+versions&rnum=1&hl=en#eef6251d17b5d6d5

Dean Brown wrote:
There are actually 19 or so different versions of the 8375 Agnus, each of which has a different pinout.

[Ilwrath]

There are actually 19 or so different versions of the 8375 Agnus, each of which has a different pinout.

Well, who am I to argue with Dean?  :-)  Good grief.  I thought all those revisions were minor mask changes and bug fixes.  Who knew many also had some different pinouts?  Hopefully none of those are destructive to each other.  [ie moved power pin(s).]  EEEK!

[57goldtop]

satiropan wrote:
I bought a 8375 390544-01 is it pin compatible with the 8372B or 8375B Agnus part number 318069-03?[/quote]
[/quote]


No it's isn't, don't even try it.

However 8375 318069-03 is pin compatible with 8372B 318069-03 and I've actually tried one in my A3000D, no problems whatsoever.

[Zac67]

It's 318069-03, no middle '9' - at least on mine.

[alexh]

57goldtop wrote:
No it's isn't, don't even try it.

Do you have any proof this is true? I'd like to know for sure if it is true.

[57goldtop]

I don't know how else to prove it to you without blowing up one of my machines and sending you a video or picture.

8375 (390544-xx) is not pin compatible with 8375/8372AB/8372B (318069-xx).


Agnus info

Sorry it is in german, use altavista if you must.

Cheers.

[alexh]

Very very interesting, I must try to talk to this Yokes Heinrich guy.

Shame he refers to the BBoAH Agnus page (which is wrong).

BTW: If you put that URL into google and click translate it's not too bad.