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Archive Magazine 1996
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volume_01
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issue_08
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1995-02-16
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Å Colour TV output for Archimedes? If you havenæt got a colour monitor
and want to use a TV to look at the output from the Archimedes in
colour, you can feed the signal from the video output into the Évideo
inæ on a video recorder (always assuming youæve got one!) and connect
the ÉRF outæ from the recorder to the TV.
1.08
Å Drive lights on external 5.25ö drives. One reader suggested that to
avoid the external drive light coming on when I accessed the interal
drive(s) I should remove all links except DS1 (I use DS2 to make it
drive2), TO, RR and MS. I followed his advice and it seems to be OK
now.
1.08
Å 400 or 300? If a piece of software wants to find out if it is running
in a 300 series machine or a 400 series it can read the MEMC to find the
size of page being used, thus:
1.08
program segment missing
1.08
Å More buzzing. One reader noticed that the buzzing from the speaker
gets worse when you upgrade from a 305 to a 310. Other readers have
found that the buzz gets to an intolerable level with certain software
such as ArcWriter. In any case, this is now recognised by Acorn as a
field change, so your local dealer should be able to sort it out for
you. If your local dealer is not within easy reach then the öcapacitor
fixò mentioned in issue 3, page 7, is easy enough to do as long as you
are reasonably competent at soldering.
1.08
1.08
Å Printer Acknowledge Line. The IOC (Input Output Controller) has a
printer acknowledge line which can be read from the ARM supervisor mode.
However, it is not advisable to Éplay aroundæ in this area, unless you
know what you are doing, because some locations are read only and
attempting to write to them could damage your IOC chip. Here is an
example program that reads the printer acknowledge line.
1.08
program segment missing
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Å *TypeFile Command. One reader tried to define an alias which types
out a file on the printer and then switches the printer off again, but
he found that it was easier said than done. I set Adrian Look onto it
and he has managed to find a way of doing it (albeit rather tortuous!):
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program segment missing
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then to print out the file, you do a *TypeFile<filename>. The <60> and
<62> are the ASCII codes for ö<É and ö>ò.
1.08
It sounds a bit long-winded, but what you are trying to do is generate
ASCII codes <2> and <3> to switch the printer on and off again. When
you do a *SHOW, it gives the definition of TypeFile as ECHO |<2>|M TYPE
%0|M ECHO |<3>|M.
1.08
Å öWhatæs the time, Arthur??ò Ö If you wanted to change the prompt
which Arthur gives, you could try, for example:
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*Set CLI$PROMPT >>>
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and you would get a question mark instead of the star prompt. Then, if
you want Arthur to tell you time at each prompt, use:
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*SETMACRO CLI$PROMPT <SYS$TIME>*
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This prints out the time and then prints the star prompt. The reason
you use SETMACRO rather than just SET is that it needs to be a variable
which is up-dated each time the command is used. If you donæt like the
seconds figure to be included, try:
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<SYS$TIME><127><127><127>*
1.08
This prints out the time but then generates three delete characters
which remove the seconds figures and the colon.