Hi

Your thinking of 2 different things, Hard drives are just that but an MMU
is commonly used for ram, the 64 for example has 16 bit addressing which
allows 64k ram which is different than 64bit addressing or data bus. There
have been some REU's from 64k up to 16megs for ram (commonly for ramdisk or
geos uses). For hard drives the CMD drives were the last complete packages
but these are only available used now. More recent developments are the
IDE64 which allows the use of ide hard drives & cdroms, also some solid
state drives are available, MMC64, 1541 ultimate, and the uIEC (either CF
card & ide or SD cards). Each has different features and price ranges.
Personally I'm using the SD card uIEC with an 8gig card and it works fairly
reliably, works even better with jiffydos from what I heard (something I
don't have yet). If you want to delve a bit deeper try the local search
engine to dig up more info. As for maximum space, I've heard of people
using 4 gig drives in some of the cmd hd devices. For some of the solid
state devices I've heard of people using anywhere from 128megs up to
8gigabytes (haven't heard of anyone using a 16gig card on a commodore yet).

On Tue, Jan 20, 2009 at 1:46 PM, Bro. Luby D. Jackson
<ldjackson@...>wrote:

> I was thinking about those external hard drives for the C64/C128D. I
> was wanting to know to access even the latest technology, wouldn't the
> Commodores have to have a MMU (memory managing unit) and 64-bit
> technology to access all that space? What's the maximum space that the
> CBM 8-bits can handle successfully?
>
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>
>
>


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