Date   : Wed, 16 Jun 2010 19:45:06 +0100
From   : jgh@... (J.G.Harston)
Subject: Printer Cable

Rick Murray wrote:
>> *FX 6 sets the character to be ignored. You get interesting effects
>> with *FX 6,13.
>
> I know. But if zero to two-five-five being valid codes and 0-255 being
> valid options, how does one specify no ignore? Does * FX 6,0 disable it,
> or filter ASCII 0?

Before the BBC, you can't ignore nothing. *FX6,0 filters CHR$0 out of
the printer stream. The Master introduced the concept of being able
to not filter anything out.

>  > When printing graphics it's not a problem as you would normally send
>  > characters directly to the printer stream with VDU 1,n (after starting
>  > the print job with VDU 2).
>
> True, but we can't overlook that David may be using View, WordWise,
> EdWord, or something else with limited fiddle-potential.

Those programs, when sending graphics codes (more likely to be
character effect codes) would be using VDU 1,n anyway, as only
CHR$7-CHR$13 are passed through to the printer stream anyway.
They do things like VDU 1,27,1,ASC"E" etc.

JGH