GVP A3001 and A2091 Together in an A2000

04 July 2013, 01:14

Hi Everyone!

I've acquired an Amiga 2000 Rev. 4.1. (OCS) + KS 3.1 ROM.

I have it working great with an 8MB A2058, and an A2091 (V7 ROMs) with a 4.2 GB Quantum SCSI HDD (ram set to 0KB since ZII memory is maxed out) running OS 3.1.

My dilemma is this: I have a functional GVP A3001 Rev4/4 MB RAM8 board - when I put into the A2000 along with the A2091, the system doesn't boot up and I get a blinking Power LED (fades in from bright red to dark red) and a black screen.

Two things that I'm thinking are the issue...
1. IDE/SCSI contention (have no idea how to fix that since I don't have the jumper settings table or the manual to the a3001).

2. ZII RAM goes over the 8 MB limit as a result of the system trying to address an additional 4 MB of A3001 RAM.

I read in a previous thread someone mention removal of "all the eeproms from the CPU board" of the A3001 and setting boot priority to 1 for the A2091 SCSI controller as it messes with the hard coded boot priority of "0" with the IDE controller of the A3001.

I'd really appreciate it if anyone can shed some more light on this and maybe explain how to remove/disable the A3001's on board RAM.

If anyone even has a correct jumper table for the A3001 - that would make my day!!!

Thanks in advance everyone!!!
-Greg

Ezrec · 04 July 2013, 05:39

Quote:

Originally Posted by gkreymer

Hi Everyone!
My dilemma is this: I have a functional GVP A3001 Rev4/4 MB RAM8 board - when I put into the A2000 along with the A2091, the system doesn't boot up and I get a blinking Power LED (fades in from bright red to dark red) and a black screen.

First off, jumpers:

http://www.l8r.net/technical/t-gvp3001.shtml

Secondly, I had a GVP A3001 with a bad memory chip on the board, and I had similar problems. Even with only the A3001 in the system, I couldn't get it to boot.

Since I already had 8M of RAM on the GVP HC+8, I just removed the memory board from the A3001.

It works just fine without it - the 68030 comes up, and everything. Just be careful when removing the memory board.

Ezrec · 04 July 2013, 05:54

Oh, one other thing. The 'IDE' controller on the A3001 is complete crap. The ROM only (seems to) support IDE disks up to 512M, and there are rumors that IDE interface itself is poorly designed. I was never able to get anything other than the (dying) hard drive that shipped with it to even be recognized.

Jope · 04 July 2013, 07:07

Yeah, first of all remove the RAM from the GVP since you already have 8MB. Then you can see whether the cards coexist. Usually they do.

TjLaZer · 05 July 2013, 22:30

Yes remove the auto boot ROMs as they conflict with newer kickstarts. Mine caused a black screen on boot and had to be removed. Secondly you want the ram on the GVP 3001 as its faster than ZII ram! It can do burst mode. Not sure if its using up the 24-bit address space but it might and will conflict with any more ram. I would try to bump down the ZII ram to 4Mb and try it.

Also keep in mind the A3001 needs special Nibble mode 30-pin Simms.

Jope · 06 July 2013, 12:52

Or take all RAM out, then add it to the GVP first, see where it resides in the memory map to determine whether you can add more. :-)

Sysinfo is a handy tool for this.

08 July 2013, 21:29

Thanks all for your wonderful advice... so I removed all the SIMMs from the A3001... black screen on boot.

@TjLaZer: Question, what are the boot ROMs? There are like a dozen removable chips from the board and I have no idea what's what? Any help there would be great!!!!

Thanks again!
Greg

11 July 2013, 16:51

Quote:

Originally Posted by TjLaZer

Yes remove the auto boot ROMs as they conflict with newer kickstarts. Mine caused a black screen on boot and had to be removed. Secondly you want the ram on the GVP 3001 as its faster than ZII ram! It can do burst mode. Not sure if its using up the 24-bit address space but it might and will conflict with any more ram. I would try to bump down the ZII ram to 4Mb and try it.

Also keep in mind the A3001 needs special Nibble mode 30-pin Simms.

TJ,
Please describe which ROMs are the autoboot ROMs - as there are literally a half a dozen removable chips.

Thanks!

TjLaZer · 23 July 2013, 00:22

It's the two ROMs at the back of the card, see this page for pics: (U24, U25)

http://www.bigbookofamigahardware.co...ct.aspx?id=180

Ezrec · 26 July 2013, 02:48

Quote:

Originally Posted by gkreymer

Thanks all for your wonderful advice... so I removed all the SIMMs from the A3001... black screen on boot.

Remove the entire memory *daughterboard*.

TjLaZer · 28 July 2013, 01:38

As a reminder: I hope that you are installing NIBBLE MODE 30-PIN SIMMS, as regular 30-pin do not work!

http://amiga.resource.cx/exp/a3001

Quote:

optional memory daughterboards
68030-RAM8:
eight 30 pin SIMM sockets accept 4 or 8 MB RAM
supports only special 1 MB Nibble Mode SIMMs, they are more expensive than GVP SIMMs
accepts SIMMs in groups of four

MalleII · 04 August 2013, 17:15

There are TWO versions of the RAM Board for the A3001:
- the RAM8 board with 30pin nibble simms
- the RAM32 board with 64pin GVP simms

i also have a A3001 which unfortunately runs only without his RAM32 board attached, this just gives me yellow screen.

Removing only the simms from the sockets didn't help, i had to remove the entire 2nd PCB attached to the A3001 CPU board.

04 July 2013, 01:14	#1
gkreymer Posts: n/a	GVP A3001 and A2091 Together in an A2000 Hi Everyone! I've acquired an Amiga 2000 Rev. 4.1. (OCS) + KS 3.1 ROM. I have it working great with an 8MB A2058, and an A2091 (V7 ROMs) with a 4.2 GB Quantum SCSI HDD (ram set to 0KB since ZII memory is maxed out) running OS 3.1. My dilemma is this: I have a functional GVP A3001 Rev4/4 MB RAM8 board - when I put into the A2000 along with the A2091, the system doesn't boot up and I get a blinking Power LED (fades in from bright red to dark red) and a black screen. Two things that I'm thinking are the issue... 1. IDE/SCSI contention (have no idea how to fix that since I don't have the jumper settings table or the manual to the a3001). 2. ZII RAM goes over the 8 MB limit as a result of the system trying to address an additional 4 MB of A3001 RAM. I read in a previous thread someone mention removal of "all the eeproms from the CPU board" of the A3001 and setting boot priority to 1 for the A2091 SCSI controller as it messes with the hard coded boot priority of "0" with the IDE controller of the A3001. I'd really appreciate it if anyone can shed some more light on this and maybe explain how to remove/disable the A3001's on board RAM. If anyone even has a correct jumper table for the A3001 - that would make my day!!! Thanks in advance everyone!!! -Greg

06 July 2013, 12:52	#6
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	Or take all RAM out, then add it to the GVP first, see where it resides in the memory map to determine whether you can add more. :-) Sysinfo is a handy tool for this. Last edited by Jope; 06 July 2013 at 13:14.

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04 July 2013, 05:54	#3
Ezrec Registered User Join Date: Jan 2011 Location: Pittsburgh, PA Posts: 31	Oh, one other thing. The 'IDE' controller on the A3001 is complete crap. The ROM only (seems to) support IDE disks up to 512M, and there are rumors that IDE interface itself is poorly designed. I was never able to get anything other than the (dying) hard drive that shipped with it to even be recognized.

04 July 2013, 07:07	#4
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	Yeah, first of all remove the RAM from the GVP since you already have 8MB. Then you can see whether the cards coexist. Usually they do.

05 July 2013, 22:30	#5
TjLaZer Registered User Join Date: Sep 2004 Location: Tacoma, WA USA Age: 52 Posts: 1,915	Yes remove the auto boot ROMs as they conflict with newer kickstarts. Mine caused a black screen on boot and had to be removed. Secondly you want the ram on the GVP 3001 as its faster than ZII ram! It can do burst mode. Not sure if its using up the 24-bit address space but it might and will conflict with any more ram. I would try to bump down the ZII ram to 4Mb and try it. Also keep in mind the A3001 needs special Nibble mode 30-pin Simms.

08 July 2013, 21:29	#7
gkreymer Posts: n/a	Thanks all for your wonderful advice... so I removed all the SIMMs from the A3001... black screen on boot. @TjLaZer: Question, what are the boot ROMs? There are like a dozen removable chips from the board and I have no idea what's what? Any help there would be great!!!! Thanks again! Greg

23 July 2013, 00:22	#9
TjLaZer Registered User Join Date: Sep 2004 Location: Tacoma, WA USA Age: 52 Posts: 1,915	It's the two ROMs at the back of the card, see this page for pics: (U24, U25) http://www.bigbookofamigahardware.co...ct.aspx?id=180

04 August 2013, 17:15	#12
MalleII Registered User Join Date: Dec 2009 Location: Germany Posts: 28	There are TWO versions of the RAM Board for the A3001: - the RAM8 board with 30pin nibble simms - the RAM32 board with 64pin GVP simms i also have a A3001 which unfortunately runs only without his RAM32 board attached, this just gives me yellow screen. Removing only the simms from the sockets didn't help, i had to remove the entire 2nd PCB attached to the A3001 CPU board.

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