[Coco] Glenside IDE problem

[L. Curtis Boyle]

I presume the new one is similar to my original driver. OS-9 can handle 128 MB max if you use a cluster size of 1 sector (256 bytes/sector). If you increase the cluster size, you can get up to 4 GB (although, some software was hardcoded for 1 sector clusters, so you need to be careful about what utilities you run). If you add partitions to the mix, you can make several of up to 4 GB each (I tested mine with 5 descriptors of 4GB each on a 10 GB Seagate drive when I wrote the original driver). The idea of using offsets (to point to the start of each partition) was taken from Bruce Isted’s driver from back in the Eliminator days.

L. Curtis Boyle
curtisboyle at sasktel.net



> On Dec 10, 2014, at 7:35 PM, Bill Pierce via Coco <coco at maltedmedia.com> wrote:
> 
> 
> From what I read, it's 4g at a time... per partition. It's all the tables can hold, but a separate table for each partition.... I may be wrong... but that's the way the spec for the ide explained it. You eventually run out of room for tables, but this is an experiment, so who cares. I'll just do it again until I find something I like.
> Besides... my Coco needed the exorcise, it was taking on a little weight while Vcc has been staying slim and trim.... :)
> 
> 
> 
> 
> Bill Pierce
> "Today is a good day... I woke up" - Ritchie Havens
> 
> 
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> 
> 
> 
> -----Original Message-----
> From: David Ladd <dladd at realmspire.com>
> To: Bill Pierce <ooogalapasooo at aol.com>; CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> Sent: Wed, Dec 10, 2014 8:27 pm
> Subject: Re: [Coco] Glenside IDE problem
> 
> 
> On Wed, Dec 10, 2014 at 7:23 PM, Bill Pierce via Coco
> <coco at maltedmedia.com> wrote:
>> 
>> David, it's the max that OS9 will do.... Why? because I don't see formating 
> 128meg and wasting 39.8 gig :-)
>> I'll eventually have 5 of these on this drive (not including RSDOS 
> partitions).
>> Why? this is my revenge for all those "Disk Full" errors all through the years 
> :-)
> 
> I thought the max that the CoCo could access total period was 4GByte
> with the way the addressing of the LSN was?  That is if I remember
> right.  Cause I had thought about buying a 8GB CF card, but saw that
> you couldn't access anything past the 4GByte boundary.  Please correct
> me if I am wrong on this.
> 
> 
> 
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