Date : Mon, 05 Jan 2015 19:40:56 +0000
From : nicolagiacobbe@... (nicola giacobbe)
Subject: Serial console active at power-on
Thanks a lot John, this is a good suggestion which, combined with the previous
e-mail will let me complete the project easily.Thanks to all in the mailing
list, I did not imagined that removing the keyboard could spur so many troubles.
Date: Mon, 5 Jan 2015 17:29:53 +0000
From: etljwk@...
CC: bbc-micro@...
Subject: Re: [BBC-Micro] Serial console active at power-on
I reckon that a sideways ROM which
"pokes" keystrokes into the keyboard buffer using OSBYTE 138 would
be a lot easier than trying to persuade a FPGA to do the same
thing, but if a sideways ROM is used, then it would be better to
do the whole job properly.
If all you want is something to enable serial and drop you at a
BASIC prompt, then I'd create a language ROM which configured the
serial port, and then did an OSCLI with "BASIC" to switch
languages.
A good starting point would be
http://mdfs.net/Docs/Comp/BBC/SROM/Mastering/Module17
Replace the code between lines 930 and 1040 with the code to do
the job.
This creates a language ROM which can either be entered
automatically at boot time, or by using the *NOBASIC command. This
would allow you to test your ROM using sideways RAM - use the
command instead of rebooting. It would also work with a Master -
that might make your testing a little easier, even if your target
is a Model B.
/John
On 05/01/2015 14:38, nicola giacobbe wrote:
Well, the truth is that I would like to control the
beeb from remote (including the printer port) so that the
printer port missing is not really an option.
About the keyboard suggestion (i.e. to remove it) and the
technical insight that followed, my original idea was to have an
FPGA to simulate the keyboard, so that the beeb could see a
'keyboard' that at power-up could send the FX commands needed to
activate the serial console.
This, joined to a custom keyboardless case could make a very
useful testing tool...
I started studying the black art of ROM making but the recent
messaged led me to the conclusion that a keyboard simulator
could be a better choice, what do our experts suggests?
> From: jumbos.bazzar@...
> To: bbc-micro@...
> Date: Sun, 4 Jan 2015 21:54:42 +0000
> Subject: Re: [BBC-Micro] Serial console active at
power-on
>
> If your application doesn't need the sound, speech,
keyboard or printer
> port, then you can boot the board without the system VIA
in place. You'd
> then "need" something bootable, IE a ROM to tell it what
to do.
>
> Mark.
>
...
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