Picasso IV and A4091

jimbo100 · 26 July 2007, 17:48

I have a Picasso IV and DKB A4091 and I can't get the two working together. Other cards installed include Kickflash, Ariadne and A3640 Rev 3.2.

I can't get the A4091 card to work with these items, when installed in the A4000D (Rev D Mainboard) the power light just blinks and the machine resets over and over. Remove the A4091 and away it goes. Now I know the A4091 card worked before because I had it installed before the PIV arrived.

Reading http://web.archive.org/web/200409250...picassoiv/#z2b
I see there is a problem between the two cards if you have version $1 of Zorro2PCI-brigde on the Picasso IV. Well guess what I have, version $1

I have further learnt that I have to upgrade the two small chips to version $4 and it's not a flash upgrade. Does anyone know where I can find these chips?

Any clues? I really like to use my A4091 card again and the 3GB of space on the drive!

Thanks for any suggestions!

zipper · 26 July 2007, 18:24

ask http://eab.abime.net/member.php?u=9408

Tobias Seiler, ex VT guy, probably still has those bridge chips.

http://www.themaster.de/

jimbo100 · 27 July 2007, 01:38

Quote:

Originally Posted by zipper

ask http://eab.abime.net/member.php?u=9408

Tobias Seiler, ex VT guy, probably still has those bridge chips.

http://www.themaster.de/

Did try that but got no response.

alexh · 27 July 2007, 09:03

Try him on the Picasso96 Yahoo Group instead.

Or pm him on Amiga.org as Mastatabs

It shouldnt be that hard to reprogram (buy some new ones and program them yourself) those chips, they are just EPROMS. Check to see if they are soldered or socketted.

In the meantime if you force Z2 mode they should work. (albeit slow)

jimbo100 · 27 July 2007, 16:32

Quote:

Originally Posted by alexh

It shouldnt be that hard to reprogram (buy some new ones and program them yourself) those chips, they are just EPROMS. Check to see if they are soldered or socketted.

In the meantime if you force Z2 mode they should work. (albeit slow)

Not something I think I can do myself. They are in a socket but I don't the ability to burn new EPROMS

jimbo100 · 29 July 2007, 10:18

A little update!

I have removed the Kickflash which contained the AmigaOS 3.9 Rom update and now the A4091 works with the Picasso IV card.

Off course I still have the problem of the A4091 SCSI II drive not behaving itself with the Picasso IV card and when put on heavy use causes the Amiga 4000 to reset.

Still looking for Rev $4 Zorro2PCI-brigde chips if anyone is able to assist?

26 July 2007, 17:48	#1
jimbo100 Registered User Join Date: Jul 2006 Location: Western Australia Age: 55 Posts: 225	Picasso IV and A4091 I have a Picasso IV and DKB A4091 and I can't get the two working together. Other cards installed include Kickflash, Ariadne and A3640 Rev 3.2. I can't get the A4091 card to work with these items, when installed in the A4000D (Rev D Mainboard) the power light just blinks and the machine resets over and over. Remove the A4091 and away it goes. Now I know the A4091 card worked before because I had it installed before the PIV arrived. Reading http://web.archive.org/web/200409250...picassoiv/#z2b I see there is a problem between the two cards if you have version $1 of Zorro2PCI-brigde on the Picasso IV. Well guess what I have, version $1 I have further learnt that I have to upgrade the two small chips to version $4 and it's not a flash upgrade. Does anyone know where I can find these chips? Any clues? I really like to use my A4091 card again and the 3GB of space on the drive! Thanks for any suggestions!

27 July 2007, 09:03	#4
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,462	Try him on the Picasso96 Yahoo Group instead. Or pm him on Amiga.org as Mastatabs It shouldnt be that hard to reprogram (buy some new ones and program them yourself) those chips, they are just EPROMS. Check to see if they are soldered or socketted. In the meantime if you force Z2 mode they should work. (albeit slow) Last edited by alexh; 27 July 2007 at 09:09.

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26 July 2007, 18:24	#2
zipper Registered User Join Date: Mar 2004 Location: finland Posts: 1,843	ask http://eab.abime.net/member.php?u=9408 Tobias Seiler, ex VT guy, probably still has those bridge chips. http://www.themaster.de/

29 July 2007, 10:18	#6
jimbo100 Registered User Join Date: Jul 2006 Location: Western Australia Age: 55 Posts: 225	A little update! I have removed the Kickflash which contained the AmigaOS 3.9 Rom update and now the A4091 works with the Picasso IV card. Off course I still have the problem of the A4091 SCSI II drive not behaving itself with the Picasso IV card and when put on heavy use causes the Amiga 4000 to reset. Still looking for Rev $4 Zorro2PCI-brigde chips if anyone is able to assist?

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