Date : Fri, 03 Apr 1998 08:39:06 +0100
From : Mike Tomlinson <jasper@...>
Subject: Re: First timer without a disk drive.
In article <3.0.1.32.19980403134741.00b76e60@...>,
David Smith <dcs@...> writes
>Yesterday I programmed a 16K eprom with the Watford 1.44 DFS
>image from the most-comprehensive "BBC Lives" ROM archive.
>
>Plugged it in last night - result:
> - it displays the Watford 1.44 logo,
> no cursor and the machine beeps long and hard.
You have no disc hardware, or disc hardware incompatible with the
Watford rom.
> Strangely, I can go "Caps+Break" (not "Ctrl") and the
> "Watford 1.44" line disappears and Basic comes up and I
> can type things in. (Beeping stops too).
Pressing any key other than Ctrl, D or W together with Break causes the
DFS to disable itself. (W only applies to the Watford DFS)
> And typing
> > *disc
> causes the machine to hang, as if it's waiting for something.
If you do this after pressing Caps+Break above, you should hear a click
and see the "cassette motor" LED come on. The machine is trying to load
and excecute a machine code program called 'disc' from tape.
>A friend has let me have his 3.5" (MITSUMI) internal disk drive,
>which I'll maybe try plug in tonight - however I'm beginning to
>think I'm seriously deluded if I think its just going to work...
If this is from a PC, some do, some don't. You will need to figure out
the drive select jumpers and select it as drive 0. PC drives come
preconfigured as drive 1.
>My question is - am I missing something important?
Yes... disc hardware, namely the 8271 chip and various support
components. The 8271 was obsoleted by Intel even when the BBC came out,
so you will have a job finding one now.
In the UK, second hand Beebs seem to go for a fiver in poor condition/a
tenner in OK condition. You'd be better off looking for another used
one which has a DFS and disc hardware and keeping your present one for
spares. I believe the Beeb was popular in Oz/NZ so you shouldn't have
too much trouble finding one.
Or use an emulator! - pcBBC is very good, as is BeebEm.
--
Mike Tomlinson
"Watch me not care." - Dogbert