Re: Guru Meditation Exact Visual Specs

On 08/12/2016 04:43 PM, Clockmeister wrote:
>
>
> On 12/08/2016 2:53 PM, Gerrit Heitsch wrote:
>> On 08/12/2016 08:43 AM, Clockmeister wrote: >> >> >> On 12/08/2016 12:55 PM, smf wrote: >>> On 12/08/2016 01:56,
> Clockmeister wrote: >>> >>>> >>>> As an aside, the very earliest
> (non-Commodore branded on the >>>> fascia) PAL Amigas sold in Australia
> were NTSC machines >>>> converted to PAL by Commodore. You can see the
> additional board >>>> added by Commodore here standing vertical with the
> crystal on >>>> it. >>>> >>>>
> http://users.on.net/~clockmeister/other/Amiga-1000/A1000%20internals3.JPG >>>>
>>>>> >>>> >>>>
> I'm not sure what the actual chip numbers are anymore, I would have
>>>>> to pull the A1000 out of storage and open it up. If there is >>>> interest, I will. >>> >>> I am interested, it looks to me as if
> that has an 8367 PAL Agnus >>> in it. >>> >>> Commodore is the kind of
> upside down company where they could >>> make a PAL version of Agnus
> quicker than they could get a pcb >>> designed/manufactured, I wonder
> what the story is behind that. >>> >> >> I've dug out the A1000 only to
> discover that I have replace Denise >> and Agnus for later chips at some
> point. > > Probably because you wanted the EHB mode which the earlier
> DENISE > didn't support. I only know a single PAL AGNUS in 48pin though,
> that > would be the 8367R0. >
>
> The earliest one I have found is 0386.
>
> I have 3 ceramic 8362's here, one 8362R5 date code 0386, one 8362R6 date
> code 0386 and another 8362R6 date code 2186.
> Interestingly two different revisions with the same week of manufacture.

And now you know the week they changed from R5 to R6 with DENISE... As 
far as I know, all those should lack the EHB mode.



>> >> FWIW Paula is an 8364 R4 week 43 1985 in that machine and I'm >>
> certain at least that is the original one and is certainly the >> oldest
> that I have found thus far. > > That is an old one, the usual PAULA was
> the 8364R7. >
>
> I have two more 8364R4's, both ceramic, date codes 0886 and 3786.

All R4 I have seen are in Ceramic... Maybe they run too hot for Plastik 
and R7 fixed that? Otherwise I know of no difference between R4 and R7.

  Gerrit



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