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Amiga computer related discussion => General chat about Amiga topics => Topic started by: aeroc on August 24, 2012, 12:31:17 AM

Title: Is this A1000 modified?
Post by: aeroc on August 24, 2012, 12:31:17 AM
Are the piggy-back chips someone's modification?

(http://www.gamogora.com/misc/amiga/mod.jpg)
Title: Re: Is this A1000 modified?
Post by: som99 on August 24, 2012, 12:41:24 AM
Yepp it's a piggyback FastRAM hack.
Title: Re: Is this A1000 modified?
Post by: Tenacious on August 24, 2012, 03:13:06 AM
Sooo, how much fast ram does it have? How much chip ram?
Title: Re: Is this A1000 modified?
Post by: save2600 on August 24, 2012, 03:49:34 AM
You tell us! Read what Workbench says. I'm guessing it's a 256kb or a 512kb upgrade...
Title: Re: Is this A1000 modified?
Post by: Zac67 on August 24, 2012, 07:33:46 AM
Quote from: som99;704862
Yepp it's a piggyback FastRAM hack.


Actually, it's SlowRAM since it's located on the chip bus.
Title: Re: Is this A1000 modified?
Post by: VingtTrois on August 24, 2012, 08:27:48 AM
Quote from: Zac67;704910
Actually, it's SlowRAM since it's located on the chip bus.

Is it a ChipRam upgrade or FastRam upgrade?
Where to find schematic about this hack? (I've found this: http://users.on.net/~clockmeister/other/Amiga-1000/)
Thx.
Title: Re: Is this A1000 modified?
Post by: amigadave on August 24, 2012, 11:26:29 AM
Wow!  I have never seen anyone stack them three high, on top of each other like that, only double stacks before on other computer hack projects.
Title: Re: Is this A1000 modified?
Post by: psxphill on August 24, 2012, 12:39:05 PM
Quote from: save2600;704877
You tell us! Read what Workbench says. I'm guessing it's a 256kb or a 512kb upgrade...

Yeah, my guess would be 512k of ranger c00000 memory. Workbench will say it's fast ram. It's no faster than chip ram, it just can't be used as chip ram. Slow ram is the unofficial name of it.
 
The A1000 has 256k of chip ram there and another 256k in the front slot. Which I assume is why there is an odd number of chips.
Title: Re: Is this A1000 modified?
Post by: som99 on August 24, 2012, 06:07:50 PM
Quote from: Zac67;704910
Actually, it's SlowRAM since it's located on the chip bus.


I know it's not technically fastram but I just answered what kind of hack it was, it's recognized as fastram even tho it isen't.
Title: Re: Is this A1000 modified?
Post by: Terse on August 24, 2012, 06:17:45 PM
Does this ram autoconfig?
Title: Re: Is this A1000 modified?
Post by: Zac67 on August 24, 2012, 07:36:26 PM
$C0 RAM autoconfigs. (Not technically, but motherboard RAM never does - it's just detected and used.)