Date   : Tue, 28 Oct 2003 10:52:14 +0000 (GMT)
From   : Sprow <info@...>
Subject: Re: NFS 3.60 ROM and the Electron

In article <20031028100412.E0F7.CHRIS.JOHNS@...>,
   Chris Johns <chris.johns@...> wrote:
> I've been looking at the NFS 3.60 ROM (the 8K version) with an eye to
> hacking for use with the electron (having made up some hardware to
> connect the Master modle).
>
> I've changed the ADLC addresses and /INTON and /INTOFF/STATID to the
> appropriate locations (it now at least recognised that it has the ADLC
> there and print "Econet Station 127" on startup).

Good progress.

> However, there are some other calls into Shiela, at FE4x and FEEx 4x is
> the System VIA and Ex is the Tube. Any ideas what it's doing with either
> of these? Does this ROM contain the Tube host code too?

Unlikely.If it's a filing system then it (ought to) implement loading and
saving over the Tube,which involves some prodding at &FEEX.
Looking at my filing systems (RAMFS/DOSFS) my Tube support consists of 33
lines of code - though most of that is autodetection and claim/release
semaphores - the actual data transfer parts are 6 instructions!
The MOS should declare no Tube is available on the Elk so you can probably
ignore it.

As to VIA accesses,dunno.

> PS. Did anyone ever track down the commercial Electron Econet interface
> - or at least a ROM image for its ROM? :)

I'm not sure there was ever an NFS3.60 for the Electron,more likely to be a
version of ANFS,simply because of the timing of release of the Elk,
Sprow.