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%C%%H2%PipeDream 3 for RISC OS

%C% Colton Software, 1989


Filename: 
%L%Last updated:


%H2%General

%JR%This file describes gives extra information to the PipeDream 3 User 
Guide.  Topics covered are:






%H2%Fonts

%JR%The PipeDream 3 User Guide implies that specifying fonts within your 
%JL%text only has effect on the printer and has no effect on the screen.  
%JR%This is not the case.  Fonts are also displayed on the screen.  The 
%JL%current slot is always shown in the system font because on most 
monitors it is much clearer and easier to edit with.

%JR%To be able to display or print characters in fonts other than the 
%JL%system font (the system font is the one used by the window's title bar) 
%JR%the Archimedes needs to have information about the shapes of all of the 
%JL%letters.  This information is supplied on disc and is read from disc 
%JR%when needed.  The directory !Fonts on Applications Disc 1 contains some 
fonts and others may become available from Acorn or other sources.  

%JR%To speed the operation of drawing fonts RISC OS reduces disc accesses 
%JL%by keeping as much font information in memory as it can.  The area of 
%JR%memory used for storing fonts is called the Font cache and you can vary 
%JL%the amount of memory available for the Font cache in the Task display 
%JR%off the Archimedes 'A' icon bar menu.  The memory that you allocate to 
%JL%the font cache becomes unavailable to the rest of the system so it is 
%JR%best to keep it as small as possible.  But if you find that fonts take 
%JL%ages to display because they are continually being read from disk you 
will need to give the font cache a little more memory.

%JR%In order to show RISC OS where to find the directory !Fonts it is 
%JL%necessary to catalogue the disc or directory which contains it.  Then, 
%JR%whenever RISC OS needs to read more font information, it will 
automatically read it from the disc.

%JR%The file Readme_f in this directory contains a copy of this document 
%JL%formatted in Trinity.Medium. Try loading that file into a window to 
%JR%compare the text with that in the system font.  If you have a 
%JL%dot-matrix or a laser printer and a suitable RISC OS printer driver you 
%JR%can try printing Readme_f .  You may find that to obtain a reasonable 
%JL%speed in the display of fonts you need to allocate a lot of memory to 
%JR%the Font cache and to print at a reasonable speed on a dot-matrix 
printer you need to allocate a lot of memory to the Module area.


%H2%Highlights in headers and footers

%JR%Highlights can be inserted into headers and footers (and the title) by 
%JL%inserting ^n where n is the highlight number (similar to search and 
replace).  For example ^4 would switch on italics.


%H2%Z88 Filing System

%JR%The Z88 Filing System provided on the PipeDream 3 disc enables you to 
%JL%connect a Z88 computer to the Archimedes and load files from it and 
%JR%save files to it as if it were a disc drive.  In order to do this two 
%JL%extra pieces of hardware are required - a Z88-Archimedes lead and the 
%JR%PC-LINK EPROM card plugged into the Z88.  Both of these components are 
available separately from Colton Software.

%JR%To start the Z88 double-click Select on the Z88 icon on the PipeDream 3 
%JL%disc.  The Z88 Filing System will load and install its icon on the icon 
%JR%bar.  Ensure that the lead is connected securely to both computers and 
%JL%that the PC-LINK EPROM card is inserted and running in the Z88. Now 
%JR%click Select on the Z88 icon on the icon bar.  A directory viewer 
%JL%should appear showing the devices available on the Z88.  Click Select 
%JR%on one of the devices and a directory viewer will appear showing the 
files and directories currently in the device.  

%JR%If you receive the message "Failed to synchronise with the Z88 (Is 
%JL%PC-LINK running on the Z88?)" check that the lead is connected securely 
%JR%in both computers, and that the PC-LINK EPROM is correctly inserted and 
%JL%running in the Z88.  (To start PC-LINK press []L (square L) on the 
Z88.)

%JR%With the Z88 Filing System running you can copy files between a 
%JL%directory on an Archimedes disk and a directory in the Z88.  You can 
%JR%create selections in directories on both the Z88 and Archimedes and 
%JL%copy the selections.  You can also copy files from the Z88 to PipeDream 
%JR%3 running on the Archimedes either by dragging the file to the 
%JL%PipeDream 3 icon on the icon bar to load the file, or by dragging the 
%JR%file into a PipeDream window to insert it into another document.  
%JL%Similarly you can save a file from PipeDream 3 to the Z88 by dragging 
the file icon from the Save dialog box to the Z88 directory viewer.

%JR%You can also drag files from the Z88 to other, but not all, 
%JL%applications.  For example you can load files from the Z88 straight 
%JR%into Edit by dragging files in a similar way to that described above 
%JL%for PipeDream 3.  Some applications will not be able to load or save 
%JR%Z88 files directly and the data will be corrupted when it is displayed 
%JL%in the application's window.  Of course, you can copy the file into a 
%JR%directory on an Archimedes disc first, and then load it into the 
%JL%application.  (For the technically minded, this is because the PC-LINK 
EPROM does not support random access, just sequential access.)

%JR%Not all of the filing system operations are supported by the Z88 Filing 
%JL%System.  You cannot use the Access, Delete or Rename commands on the 
%JR%Filer Selection sub-menu to operate on Z88 files.  Neither can you 
%JL%create directories on the Z88 from the Archimedes; you must do this on 
the Z88 itself, using it's own Filing System.
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Fonts
Highlights in headers and footers
Z88 Filing System
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%L%$.Documents.Readme
%L%02 August 1989
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