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Amiga.org Amiga computer related discussion Amiga Marketplace Wanted: GVP A530 "GURU ROM"

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Old 05-22-2007, 04:46 AM   #1
dogudoruk
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Default Wanted: GVP A530 "GURU ROM"

I m looking for "guru rom" for my gvp a530..is anybody know where can I get it thanks
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Old 05-22-2007, 05:40 AM   #2
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Default Re: Wanted: GVP A530 "GURU ROM"

Can you explain a bit more about it? Are you taking about hardware or something from the floppy that comes with the card?

Cheers.
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Old 05-22-2007, 05:55 AM   #3
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Default Re: Wanted: GVP A530 "GURU ROM"

Quote:
Can you explain a bit more about it?
Its a replacement ROM for GVP SCSI cards and the A2091, basically a driver update if I remember correctly.
Sometimes they use a different ROM and a little adaptor board is used. (sometimes=always?)
Anyhow its an upgrade, not something that comes with the card as standard.
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Old 05-22-2007, 06:07 AM   #4
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Default Re: Wanted: GVP A530 "GURU ROM"

Quote:
Oli_hd wrote:
Its a replacement ROM for GVP SCSI cards and the A2091, basically a driver update if I remember correctly.
Ah, okay thanks. Nothing I can help with then sadly.
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Old 05-22-2007, 06:38 AM   #5
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Default Re: Wanted: GVP A530 "GURU ROM"

It looks like softhut have the Guru rom for the A2091 and the GVP Z2 card, dunno if the Z2 one works in an A500 card though.
Linkey

Seems the adaptor board is required, the only other site I found (after a two second google) was updates for people who already owned the Guru rom boards.
(It says on the website "These images are updates for legitimate owners of the original Guru ROM only, not an excuse for cheapskates to devalue these dealers' remaining stock." so I wont post the link to that site.

For more info on the Guru rom visit Amiga-hardware.com
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Old 05-22-2007, 06:40 AM   #6
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Default Re: Wanted: GVP A530 "GURU ROM"

Here is the romimage Gururom 6.14.

http://babel.org/amiga/#gvp
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Old 05-22-2007, 06:41 AM   #7
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Default Re: Wanted: GVP A530 "GURU ROM"

you mean Ralph Babel's site. no harm in providing the link as I'm almost sure SoftHut don't have them in stock anymore, and there's no way to make use of the Rom Image without the adapter board, which contains a programmed GAL chip whose interior is unknown to even Ralph Babel himself.
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Old 05-22-2007, 10:23 AM   #8
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Default Re: Wanted: GVP A530 "GURU ROM"

Quote:
countzero wrote:
there's no way to make use of the Rom Image without the adapter board
Quite true.

Quote:
contains a programmed GAL chip whose interior is unknown to even Ralph Babel himself.
Surely not?! I bet he knows EXACTLY what it does, he had to code for it.

It would take 5 mins to work it out if I had one.

There HAS to be a good reason Ralph doesnt want people making anymore. Either a legal reason or personal.
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Old 05-22-2007, 12:00 PM   #9
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Default Re: Wanted: GVP A530 "GURU ROM"

Quote:
alexh wrote:

It would take 5 mins to work it out if I had one.
Well, I have one, but I'd like another, and I can program GAL chips. What are your suggestions for working it out? If you do a google search, there was a discussion somewhere of theoretically what the GAL is doing, but I don't think anyone has ever attacked one with a logic analyzer.
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Old 05-22-2007, 07:42 PM   #10
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Default Re: Wanted: GVP A530 "GURU ROM"

thanks for all..but what about my guru rom is it find to difficult? if so I will give up to looking for. I have a friend from japanese maybe he knows thanks again
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Old 05-23-2007, 02:06 AM   #11
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Default Re: Wanted: GVP A530 "GURU ROM"

Quote:
hardlink wrote:
What are your suggestions for working it out?
Five minutes of booting and running on the logic analyser here at work.

Quote:
If you do a google search, there was a discussion somewhere of theoretically what the GAL is doing, but I don't think anyone has ever attacked one with a logic analyzer.
I contributed to that discussion. We need one to try. I have a GVP HD8+ all I need is the adapter and I'll open source the results.

If Ralph doesnt mind.
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Old 05-23-2007, 08:56 AM   #12
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Default Re: Wanted: GVP A530 "GURU ROM"

Ralph has intimated to me that he doesnt want people replicating his work. I can fully understand that.

If anyone knows where you can officially buy these chips + adapters that would be better than trying to "steal" other peoples hard earned work.
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Old 05-23-2007, 10:15 AM   #13
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Default Re: Wanted: GVP A530 "GURU ROM"

Quote:
alexh wrote:

If anyone knows where you can officially buy these chips + adapters that would be better than trying to "steal" other peoples hard earned work.
The problem is, such a place do not exist.

I appreciate Ralph's hard work, but without anyone making use of it ... it doesn't have much meaning.
Quote:
"Software Hut Inc."
to me

show details
May 22 (1 day ago)
Thank you for your order, sorry we can no longer get the Guru rom as they stopped making them.

If you need anything else please let us know.

Thank you
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Old 05-23-2007, 05:23 PM   #14
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Default Re: Wanted: GVP A530 "GURU ROM"

Quote:
countzero wrote:
The problem is, such a place do not exist.
www.compuquick-amigadirect.com $60
www.eternity-computer.de 49
www.dbline.it/shtm/amspam.htm 25
www.mrhardwarecomputers.com $70

Confirm that non of these shops sell them and Ralph said that if there were no more shops selling them that he would consider a simple license to get some more made.
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Old 03-24-2008, 06:39 PM   #15
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Default Re: Wanted: GVP A530 "GURU ROM"

Hi,

Sorry to bump an old thread, but have you heard anything more on this subject? I can call Compuquick/MrHardware tomorrow, but Eternity's doesn't seem to want to go to English and I'm afraid I never learned more than pigeon German. The Italian site only lists for the A2091 not for the GVP card. I have only the GVP SCSI hardcards.


Thanks,
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Old 04-10-2008, 04:01 PM   #16
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Default Re: Wanted: GVP A530 "GURU ROM"

try this.

if 0x2000=< address =< 0x201F A14= A1

this means if the adress read in in the range, A14 will take the same value as A2

if you have a look on a rom dump, you will see that the data from 0x0000 are the same as the one from 0x4000 (look to be a rom switch.. at A14)

moreother if you have a look on winuae (GPL) source code that emulate the guru rom, you will see something like this (I replace some variable by the right value)

if (addr >= 0x2000) {
if (rom) {
int off = addr & rom_mask;
if ( (addr & 0xffe0) == 0x2000) __________ from 0x2000 to 0x201F
rombank = (addr & 0x02) >> 1; _________ A14=A1
off += rombank * rom_size;

I didn't hack any gal, just read the GPL source code...

up to now, I didn't try, so may needs some tweak . but I desperate to find a guru rom adapter to buy. IF I can't find I will do it myself as a lot of people had tried to ask . the Best should be for the autor to put the gal as a shareware. al lot of people who want to use this rom are honnest and will be very pleased to pay a shareware licence. (will do for sure)

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