Hi Chris,

I don; have much time but here are a couple of quick answers,

I'm trying to source parts, and information on the ACC hard drive with the ACC
BIOS that accessed their hard drice as they had already dealt with the hard
drive integration problem.

The FAT file system is too large to reasonably fit into the Einstein. It will be
dealt with by the adaptor I'm building. The Einstein will merely send commands
to the Pipe and my adaptor will deal with directory creation, reading and
writing files, handling folders etc.

If I can get more information on the ACC device I might follow their lead and
have the hard drive showing as drive 2 (following the PC standard of a C drive)



> 4: With a smaller piece of code could a piece of Einstein RAM be exchanged
with memory in a storage device run and be swopped back? Act something like a
MOS Mcal but from the storage device?

That should be possible.

> The CF Interface
> I'm sorry you have brought closure to the compact flash interface. My regret
is that I didn't have the steadiness of hand and eyesight to solder up the
finley pitched pins of the compact flash holder. If I find a more manageable way
to do it I still will.

I'll try make a second and send it to you if I get time.

> With hardware has full address decoding with the CF since been established?

Full address decoding is possible (I've followed the Einstein standard of
addressing in 8bit chunks (ie only bits 3 to 7 are used for each device, bits 0
to 2 are used by those devices)

> Is there any new programing you have developed for accessing the CF you can
share with us?

Nothing above what's posted here. Just blind reading and writing of sectors
without implementing any file system.

> My Own Development
> As mentioned in a previous post I have established an Einstein user port / PC
printer port link for exchanging data. Example programing can be found at
http://www.einstein.talktalk.net/pio.html . A pdf document viewed or downloaded
from http://www.einstein.talktalk.net/download/pio_extra.pdf
>


Your developments look very interesting. I'll reply to the rest of your post
later when I can read it properly.

Do you have a copy of the "FlexiDos" ROM?

Regards,
Geoff