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Author Topic: Expanded A2000 using NO SLOTS!  (Read 7923 times)

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Offline bbond007

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Re: Expanded A2000 using NO SLOTS!
« on: August 06, 2013, 11:30:50 PM »
Quote from: Oldsmobile_Mike;743855
I actually just emailed Kipper2K yesterday to ask if one could use his 8MB board underneath the processor + a card in the accelerator slot... wasn't sure if sticking something in the A2000 accelerator slot completely disables the 68000 socket or not?  Will let you know when I hear back!  :)

...or just buy another of each, that's cool too.  :D

That ram would be 16BIT and a lot slower than the 32BIT RAM on an accelerator and thus actually using it will slow you down almost as much as not having an accelerator at all... as long as the RAM priority is set correctly, it should not be detrimental, just not not overly useful. If it did work, perhaps it would be useful for Z-II DMA on a HD controller.

I would be interested in hearing if it would work though :)
« Last Edit: August 06, 2013, 11:38:05 PM by bbond007 »
 

Offline bbond007

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Re: Expanded A2000 using NO SLOTS!
« Reply #1 on: August 07, 2013, 06:40:35 PM »
Yeah, I'm 100% sure 32bit ram is outside ZII range. Otherwise you could never see 16MB, 32MB, etc...

When I had my A2000, I know I had 32MB 32bit on my PP&S 040 and 4MB 16bit ram on my GVP 4008 SCSI with GURU ROM. The 4MB on the board was utilized by the guru for DMA as ZII can't DMA into 32BIT ram.

Does the kipper board let you disable 4MB? I'm guessing, you'd run into trouble if you tried to add a ZII GFX board.
« Last Edit: August 07, 2013, 06:44:15 PM by bbond007 »