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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: tonyvdb on January 21, 2016, 07:24:16 PM

Title: DKB Megachip and A2000
Post by: tonyvdb on January 21, 2016, 07:24:16 PM

So is there a source to buy the DKB Megachip for the A2000 still? Also is this the only easy option to add more chip ram to the A2000 or are there other options now?
I have the rev 6.3motherboard in my A2000.

Title: Re: DKB Megachip and A2000
Post by: Acill on January 21, 2016, 07:29:23 PM

I haven't seen any for sale in a long time. In fact at Amiwest last year was the first time I saw a machine with a Megachip in it for the first time in ages. We tried to get it working and failed.

Best bet is to look on Amibay and post in the wanted section.

Title: Re: DKB Megachip and A2000
Post by: Oldsmobile_Mike on January 21, 2016, 08:02:19 PM

They used to come up every few weeks on ebay & Amibay, around $100 bucks right up until a year or two ago.  Now they're not so common.  Sometimes it's worth it to just buy a used 2000 or 500 that already has one installed, even if it's a bit more $$ think of it as then you'll have a whole other spare parts machine, too.  :)

I think the ACA 500 has some hack installed that allows it to expand your Chip memory, but don't quote me on this.  Obviously it'll be years, if ever, before the ACA 500 technology ever makes it to the 2000.  :(

There's a few very sophisticated hacks that involve piggybacking additional memory on top of the existing 1MB of motherboard chip mem.  Saw a diagram once, wouldn't be something I'd want to try, myself.

Title: Re: DKB Megachip and A2000
Post by: tonyvdb on January 21, 2016, 08:35:11 PM

Hey Mike, you have a Megachip, Im sure you dont want it so Ill take it from you ;) LOL

Title: Re: DKB Megachip and A2000
Post by: Oldsmobile_Mike on January 21, 2016, 09:18:13 PM

Quote from: tonyvdb;802624

Hey Mike, you have a Megachip, Im sure you dont want it so Ill take it from you ;) LOL

You can have mine when you pry it out of my cold, dead, hands.  ;)

Here's this:  http://members.iinet.net.au/~davem2/overclock/A2000-2MB-chip.html

I'd love to see someone replicate that, but is it going to be me?  Not a chance. :p

Title: Re: DKB Megachip and A2000
Post by: save2600 on January 21, 2016, 10:27:44 PM

Quote from: Oldsmobile_Mike;802621

I think the ACA 500 has some hack installed that allows it to expand your Chip memory, but don't quote me on this.  

Yes, it performs a soft "hack" for 512k Chip RAM users that have the 1mb Agnus installed in their machines. Selecting that option in the Expert Menu of the ACA500 before startup enables the extra RAM available to go to Agnus for a total of 1MB Chip. The Menu will let you know if that feature is available or not for your machine.

Title: Re: DKB Megachip and A2000
Post by: QuikSanz on January 22, 2016, 01:47:35 AM

Quote from: Oldsmobile_Mike;802625

You can have mine when you pry it out of my cold, dead, hands.  ;)

Here's this:  http://members.iinet.net.au/~davem2/overclock/A2000-2MB-chip.html

I'd love to see someone replicate that, but is it going to be me?  Not a chance. :p

Lol, would not think of removing my Megachip from my A2000! So same answer here.

Title: Re: DKB Megachip and A2000
Post by: Plaz on January 22, 2016, 04:51:36 AM

Quote from: Oldsmobile_Mike;802625

Here's this:  http://members.iinet.net.au/~davem2/overclock/A2000-2MB-chip.html

Thanks for that link. That is a great write up and an easy mod for someone with good solder skills.
If I'd known about that back in the 90's, I bet I would have been popping a dozen of those out a week for all the demand.

Plaz