Date   : Wed, 08 Jun 2005 14:11:46 +0100
From   : "neil f" <faz@...>
Subject: Re: GoMMC versus hard drive. Which way to go?

 

> -----Original Message-----
> From: Majordomo List Manager [mailto:majordomo@...] On
Behalf 
> Of Jonathan Graham Harston
> Sent: Tuesday, June 07, 2005 11:56 PM
> To: bbc-micro@...
> Subject: [BBC-Micro] Re: GoMMC versus hard drive. Which way to go?
> 
> > Message-ID: <5kf9a1tebpjcrrbihk272iodajjkkno7rn@...>
>  
> John Kortink <kortink@...> wrote:
> > With GoMMC, easy to backup as well. You can regularly make a
backup 
> > copy of your harddisc image on your PC.
> > Even large ones like hundreds of MBs will be a matter of a few 
> > minutes' work to backup.
>  
> Ah, the other advantage/disadvantage between GoMMC and HD.
>  
> The MMC card unplugs from the GoMMC quite easily (+), but is often 
> hidden inside the computer.
>  
> A hard drive can be fiddly to unplug, but with a BBC/Master is often

> outside the case.
>  
> > >Why won't it work in the ashtray though? Surely it's just
> another rom
> > >socket, electrically,
> > 
> > No, it isn't. It's quite different.
>  
> A Master ROM cartridge card subtly changes the signals available on 
> the cartridge slot, so plugging something into a catridge card ROM 
> socket is not identical to plugging into a motherboard ROM socket.
>  
> Also, the signals actually available are subtly different to the 
> signals available at the ROM sockets on the motherboard.

On my machine, which is a Master m/b in a Beeb case, the ZIF socket in
the ashtray is connected to the relevant rom socket via a Watford ZIF
extension cable. All the rom socket signal lines are brought out, with
just a couple of inline resistor packs for cable termination. Surely
that should work OK with GoMMC?

-Neil F.


>