WTB: Memory card for A2000

[abbub]

Looking for 4 MB or so more for my A2000.  Right now it's already got a 2630 w/ 4 MB, but I'm hoping to take it up to 8 or 12 MB of memory.

[dannyp1]

Where are you located?

[abbub]

Sorry, I'm in Fort Collins, Colorado, USA.  (I thought that was in my profile, but I must have missed that!)

[VingtTrois]

Sorry, I'm in Fort Collins, Colorado, USA.  (I thought that was in my profile, but I must have missed that!)

Hello,

12MB on A2000 ? I think it will be 8 MB maxi!
AMIGA RESOURCE
Memory
up to 2 MB Chip RAM (MEGACHIP or others)
up to 128 MB Fast RAM on processor cards
up to 8 MB Fast RAM on Zorro II expansion cards

So on A2000: 2MB Chip + 8MB FAST is equal to 10MB total.

If you want more, you need memory on accelerator card 030/040 or 060, like this:
http://cgi.ebay.fr/ws/eBayISAPI.dll?ViewItem&item=250594015451&ssPageName=STRK:MEWAX:IT
or
http://cgi.ebay.fr/ws/eBayISAPI.dll?ViewItem&item=270549714606&ssPageName=STRK:MEBIDX:IT
or
http://amiga.resource.cx/exp/search.pl?product=&company=&amiga=2000&intf=cpu&mid=&base=dec&pid=

[abbub]

I have a 2630 expansion card with 4 MB Fast RAM on it.  I modded my 2000 with an ECS Agnus and now all of the memory that's soldered on the actual motherboard is seen as Chip RAM.  Reading that page, it would seem that I can still go to 8 MB on the Zorro-II bus since the 4 MB of Fast RAM is on the 2630 card?

Even a 4 MB upgrade would be a big help.  I managed to get MiamiDX working via the serial port and pppd on my linux box, but I now find that these fancy new-fangled TCP/IP applications eat up all of my memory.  

[save2600]

Yes, you are right Abbub.

Trick is, you want as much 32-bit RAM as possible. That 2630 card only takes 4MB though, unless you add a DKB 2632 card to it. Good luck finding one of those though. lol You're kinda stuck using a Zorro card, but better than nothing!

Before I got my 2060 card with its 128MB of RAM, I had a GVP 030 combo card with 13MB AND a 4MB Zorro II RAM card going at the same time, for a total of 17MB. I guess applications will use up the 32-bit RAM first, before moving on to the slower stuff, so that's a plus at least.

[Moto]

I think I have an 8UP! board collecting dust in the closet.  I believe that is populated with 4MB.

[AndyLandy]

Doesn't the 2630 put its RAM into the 24-bit Zorro II address space? Worth checking, since you might still be limited to 8MB.

[Tenacious]

Yes, you are right Abbub.

Trick is, you want as much 32-bit RAM as possible. That 2630 card only takes 4MB though, unless you add a DKB 2632 card to it. Good luck finding one of those though. lol

If you're wanting to go online and surf, only 4 more megs (especially the 16-bit, Zorro 2 variety) may not be satisfying.  You could go for a different 32-bit accelerator with more ram or (as Save2600 said) snag a DKB 2632 on eBay.  Actually, I got one on eBay last year for a modest price, didn't have to wait too long.  It's the other DKB fastram expansion (3128?) that's rare and very expensive.

Are you also running an A2091 SCSI interface with 2 Megs of fast ram?

[abbub]

Doesn't the 2630 put its RAM into the 24-bit Zorro II address space? Worth checking, since you might still be limited to 8MB.

Hrm...

This is what the manual says about the memory: "The A2630 also contains fast, 32-bit wide memory to complement the 32-bit Motorola chips. It comes with 2 or 4 megabytes of 32-bit wide on-card RAM which runs at the 68030’s speed. With this fast memory installed, the A2630 may deliver a 400% - 600% speed increase in most integer based operations."

[abbub]

If you're wanting to go online and surf, only 4 more megs (especially the 16-bit, Zorro 2 variety) may not be satisfying.  You could go for a different 32-bit accelerator with more ram or (as Save2600 said) snag a DKB 2632 on eBay.  Actually, I got one on eBay last year for a modest price, didn't have to wait too long.  It's the other DKB fastram expansion (3128?) that's rare and very expensive.

Hee!  I'm not really wanting to 'go online and surf' so much as I'm wanting to run an IRC client and a telnet client without the entire system grinding to a halt.  I have no illusions about any real surfing on this system.  Right now I'm pretty happy with the system as it is, it's just that MiamiDX and one other program pretty much tap the available Fast RAM.

[tone007]

Unfortunately the 4MB on the 2630 does count toward the Zorro II limit... somehow.  4 more MB is as much as you can get in there with that accelerator (and without the previously mentioned 2632.)

[save2600]

Unfortunately the 4MB on the 2630 does count toward the Zorro II limit... somehow.  4 more MB is as much as you can get in there with that accelerator (and without the previously mentioned 2632.)

Well isn't that special???

:lol:

[Tenacious]

Unfortunately the 4MB on the 2630 does count toward the Zorro II limit... somehow.  4 more MB is as much as you can get in there with that accelerator (and without the previously mentioned 2632.)

How can this be?  Does the rom of the 2630 map the memory it to the wrong place?

[Ami_GFX]

How can this be?  Does the rom of the 2630 map the memory it to the wrong place?

No, it is just the way it is. I know this from experience and it is backed up by the original 2630 manual which came with my A2500. You can add just 4mbs more of Zorro II ram--less if you use a Zorro II RTG card. The 2632 is the the only memory upgrade for this accelerator. You would be better of getting a GVP accelerator. They are faster, come with the same 4mb base memory, and leave you the full 8mb Zorro II memory. And above all, they come up for sale a lot more often than 2632s and usually go for less. I sold one last month for around $130.