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Amiga computer related discussion => Amiga Marketplace => Topic started by: K7HTH on April 01, 2007, 07:32:54 PM

Title: DKB MegaChip
Post by: K7HTH on April 01, 2007, 07:32:54 PM

Heads up. There is one selling on eBay at the moment.

Title: Re: DKB MegaChip
Post by: amazing on April 01, 2007, 07:51:08 PM

what will that chip do?

Title: Re: DKB MegaChip
Post by: Jeff on April 01, 2007, 07:53:57 PM

Expand your chip memory to 2 megs total on an A500 or A2000.

Title: Re: DKB MegaChip
Post by: MickTheLip on April 01, 2007, 10:43:18 PM

Could someone post a link to the EBay auction please?

Title: Re: DKB MegaChip
Post by: Amiduffer on April 02, 2007, 01:09:01 AM

ebay link (http://cgi.ebay.com/DKB-MegaChip-w-2MB-Agnus-For-Amiga-A500-A2000-500-2000_W0QQitemZ290100844487QQcategoryZ4598QQssPageNameZWDVWQQrdZ1QQcmdZViewItem)

Doesn't look too bad. Its something I'd get if I had either of those models.

Title: Re: DKB MegaChip
Post by: K7HTH on April 02, 2007, 06:29:43 AM

Quote

Amiduffer wrote:
ebay link (http://cgi.ebay.com/DKB-MegaChip-w-2MB-Agnus-For-Amiga-A500-A2000-500-2000_W0QQitemZ290100844487QQcategoryZ4598QQssPageNameZWDVWQQrdZ1QQcmdZViewItem) Doesn't look too bad. It's something I'd get if I had either of those models.

Same here. And with the other stuff he is selling too. Too bad I'm broke at the moment!

Title: Re: DKB MegaChip
Post by: alexh on April 02, 2007, 04:20:21 PM

It also is for the CDTV.

You should be aware this is the NTSC version.

Title: Re: DKB MegaChip
Post by: Kronos on April 02, 2007, 04:42:25 PM

There ain't such such things as NTSC or PAL versions for Big Agnus (1 or 2 MB), it's all determined by either pulling on leg to ground or leaving it open.

My guess is that the MegaChip simply connects that pin to back to the mobo-socket, and therefore is PAL in PAL boards and  NTSC in NTSC boards.

Title: Re: DKB MegaChip
Post by: adolescent on April 02, 2007, 04:53:28 PM

@Kronos

Yes there is.  The 8375 from the A600 has 2 separate versions (318069-11 is NTSC, the 318069-10 is PAL).   IIRC, pin 41 on the A600 Agnus is used for something else, the chips are not switchable.

Edit: clarified.

Title: Re: DKB MegaChip
Post by: alexh on April 02, 2007, 05:57:47 PM

Quote

Kronos wrote:
There ain't such such things as NTSC or PAL versions for Big Agnus (1 or 2 MB), it's all determined by either pulling on leg to ground or leaving it open.

That is not true for the 8375 chips as has already been said.

Quote

My guess is that the MegaChip simply connects that pin to back to the mobo-socket, and therefore is PAL in PAL boards and NTSC in NTSC boards.

Again not true. The MegaChip PCB design *may* allow you to "just swap" an NTSC 8375 318069-11 for a PAL 8375 318069-10 but who knows.

Title: Re: DKB MegaChip
Post by: K7HTH on April 02, 2007, 06:48:59 PM

Edit

Title: Re: DKB MegaChip
Post by: K7HTH on April 02, 2007, 06:51:23 PM

Quote

alexh wrote:
Again not true. The MegaChip PCB design *may* allow you to "just swap" an NTSC 8375 318069-11 for a PAL 8375 318069-10 but who knows.

You, Sir are correct. The MegAchip comes standard without a FAT Agnus. One only need install the 2MB Fat Agnus of their choice to accommodate their needs.  

See this link (http://amiga.resource.cx/photos/megachip) for an example.

Title: Re: DKB MegaChip
Post by: motrucker on April 03, 2007, 04:25:11 PM

The Megachip 500/2000 is one the better upgrades for these computers. My A2000 is a much more usable machine with this addition!

Title: Re: DKB MegaChip
Post by: LoadWB on April 03, 2007, 06:43:36 PM

I'm looking at some of the stuff that I got rid of and wishing I hadn't now.  A while back I sold an extra MegAChip and GuruROM... the MegAChip is great in the A2000.

I'm interested in seeing how the price jumps up in the last few minutes.