Help fix "The Big Book of Amiga Hardware" Today: AGNUS

[Chain]

maybe Vbb is for 5V and indicates its not 3.3v cmos chip, dunno

i will try to look at my 3000 machines.


all we need 100% correct&confirmed agnus list  8-)

[Will-i-am]

okay, my  ntsc A3000 has: fat agnus
8372B
31069-03
4190 23

and P/N rev 9/03
I'll have to open up the other machines, the Beast has that 'funny' mobo so it might be a unique but the rest of them should be normal. I have to install a new floppy drive in the Sister of the Beast so I should have that open today or tomorrow.

BTW since I haven't gotten this thing to boot yet, how does one know if a machine that isn't booting and is newly acquired is in fact NTSC or PAL? Might be part of my problem, ya know?

[alexh]

I dont think it matters what VBB stood for...

The list is being updated at the moment, photographs, date codes, pinouts all being collected and the results will be posted via Amiga-Hardware.com

I'm still missing several examples of chips though, 3875 -17, -18 are very illusive.

I also have no way of telling PAL from NTSC on the earliest version Agnus (the DIL ones) There is no product code on the top (they must have been printed underneath) and so no way to differentiate from chips in boards.

If you look at the Agnus on this A1000

http://www.amiga-hardware.com/download_photos/a1000mbrev6.jpg

It says:

MOS
8361R3
2685 S

There is no code indicating if it was PAL or NTSC.. no product number. Gonna need someone who's got one of these to help out.

[InTheSand]

Hi,

If it's of any use, my A1000 has the following:

8367RD 1486S - Agnus
8364R4 06-86 - Paula
8362R6 5185S - Denise

This is a PAL machine from the UK.

Regards,

 - Ali

[Zac67]

@alexh: PAL/NTSC machines use the very same Denise, all vertical blanking timing/data flow is managed by Agnus.

[alexh]

8367RD 1486S - Agnus

Could that be 8367R0 rather than a D? :-D A photo would be VERY good.

[alexh]

@Zac

This entire thread is about AGNUS. I know that AGNUS controls the timing. HOWEVER there are NTSC Agnuses, and there are PAL Agnuses (the 8372 version is both PAL AND NTSC).

Most of the time you can work out which variety (PAL or NTSC) you have for a particular revision of Agnus from the code written on the top.

However the very early A1000 Agnuses (8361) do not have this code on the top of the chips. Now perhaps they were both PAL and NTSC like the 8372 (but I do not think so), perhaps they were not marked in any way, OR I speculate that the code was underneath, but I do not really know.

[Zac67]

Sorry, must've misunderstood your post.

AFAIK the early DIP40 Agnuses had different ID codes, a 8361 was NTSC and a 8367(?) PAL - might be wrong. They were definitely not switchable; a friend of mine had a PAL-modded NTSC A1000 that wouldn't do NTSC any more.
I always thought all ECS Agnuses were switchable (my first one was) but obviously this is wrong.

[Kernel]

I just received 2 A500's I purchased off of ebay.  They are REV 5 motherboards, NTSC, and have 8372A 318069-02 chips.

[mikrucio]

WOOOOOOOOOOOOOOOOOOOT!

I never knew angus controlled 25 DMA channels!!

WOWOWOWOWOWOWOWOWOWOW. thats incredible considering the moderm PC only has like 10.

amiga rox.

[InTheSand]

alexh wrote:

8367RD 1486S - Agnus

Could that be 8367R0 rather than a D? :-D A photo would be VERY good.

Err.. oops! Yes, it's a zero. I've found a photo now, will email it to you.

 - Ali

[AmigaCori]

My contribute:

Amiga500 Green Power Led K1.3 Purchased:1989 PAL Italy
(Made in Hong Kong)

MOTHERBOARD: REV. 6a

FAT AGNUS: 8372A
           318069-02
           2491 23

DENISE: 8362R8
        4191 28


Saturday I'll write data for Amiga500 Red Power Led K1.3 1988
(Made in Germany)

[alexh]

AFAIK the early DIP40 Agnuses had different ID codes, a 8361 was NTSC and a 8367(?) PAL - might be wrong.

[/b]
Ahhh, you are probably correct. That still doesnt explain where commodore part numbers listed on the Amiga-Hardware Anus page for 8367 and 8361 Agnuses come from?

> Agnus (512K) 8361 252125-01 A1000 (NTSC), A2000A (NTSC)
> Agnus (512K) 8367 252362-01 A1000 (PAL), A2000A (PAL)

All of the photo's of I have seen just have "MOS 8367 XXYY S" where XXYY is the manufacture date code. I see no 252125-01 or 252362-01 on any! Perhaps they are printed on the underside of the chips?

[minator]

There's a pic of my chipset here.  Early NTSC A1000.

Numbers are not 100% clear
Paula 8364R4 - 0886
Agnus 8361R5 - 0186
Daphne 8362R5 - 0686?

[Zac67]

Hmm, I remember dimly that there was something on the underside...

PS: from A500 PAL OCS (my first Amiga):
8371
2387 21
underside:
Philippines
IM242209
HC-30

[alexh]

Daphne 8362R5 - 0686?

Denise. Great work, another shot of an Agnus I dont have. The database is improving. Another week or two and I'll release the results via Amiga-Hardware.