>�3:�23,1,0;0;0;0;:�14:�''"PRESS <SHIFT> TO SCROLL"'':�text
Q�:�''"PLEASE PRESS <P> TO PRINT TEXT, <E> FOR EDL PROGRAM, <M> FOR MAIN MENU"
�:A%=�"EMP",�):�A%
(�A%=1 ��"$.EDL2"
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[8�"                       D A T A    T R A N S F E R"
\8�"                       ~~~~~~~~~~~~~~~~~~~~~~~~~~"
]�
dK�"The program, EDL (Electron Data Link), is a much modified version of"
nG�"Watford Electronics BBC-Z88 data transfer software which has the"
xP�"restriction of only working to the Z88 and in Mode 7.  With more portable"
�N�"computers on the market these days e.g. the Amstrad NC10 0 or 200, more"
�H�"and more people will wish to transfer there data to and from such"
�L�"machines.  With this in mind I set about trying to produce an easy to"
�*�"understand file transfer utility."  
��""
�M�"For the utility to work you will require an RS423 interface, I believe"
�/�"Slogger and Pres produced these add-ons."
��""
�M�"The BBC/Z88 program provided a good starting point but there were many"
�#�"changes to be made, such as:"
��""
��""
�!�"a) Improve the menu layout"

�""

@�"b) Additional key presses (Short cuts) to select options."

�""

"L�"c) Each character is displayed on screen as it is sent or received in"

,�"   80 column format."

6�""

@I�"d) The ability to add or remove Line Feeds from the displayed data"

JH�"   (similar to the double line spacing or over-write effects on a"

T�"   printer)"

^�""

hB�"e) Character count is displayed after transfer is complete."

r�""

|4�"f) Work in Modes 6 and 7 with DFS and/or ADFS"

��""

�L�"g) Make it compatible with many more computers - probably not the Z88"

��"   though."

��""

�M�"After all that there is very little left of the original program and I"

�O�"think I have made it as simple to use as possible i.e. no messing around"

�J�"with Start & Stop Bits etc. by using the Electron default settings."

��""

�I�"At this point I would like to thank Roy Warner for his articles on"

�O�"Assembly language programming in previous issues of EUG, without these I"

�Q�"would probably never have ventured into this area - I struggle enough with"

�
�"BASIC."

��""
�""
�"How to use the program"
�""
&N�"To RUN the Data Transfer program CHAIN the file EDL2 in the normal way."
0-�"A menu is presented with five options:"
:�""
D �"                (R)eceive"
N�"                (S)end"
X)�"                (I)nbound CR/LF ON"
b*�"                (O)utbound CR/LF ON"
l�"                (Q)uit"  
v�""
�P�"Select your option by using the UP or DOWN cursor keys or by pressing  R,"
��"S, I, O or Q."
��""
�Q�"Receive - When 'Receive' is selected you are asked for a Filename to store"
��"your data in:"
��""
�'�"Enter Filename then press RETURN"
��""
�P�"The computer will open a file on the disc and wait for the incoming data."
��""
�J�"Now send the data from your source computer.  As each character is "
�N�"received it is displayed on screen in 80 column mode and on completion "
�O�"the computer will close the file and, display in the bottom right corner"
M�"of the screen, the total characters received.  After a short delay you"
 �"are returned to the menu."
�""
 L�"Send - When 'Send' is selected you are asked for the Filename of your"
*�"source text:"
4�""
>N�"Enter Filename and before pressing RETURN set up the receiving computer"
H�"to receive your data."
R�""
\O�"The computer will now open the file, and as each character is sent it is"
fM�"displayed on screen in 80 column mode.  At the end of transmission the"
pK�"computer will display, in the bottom right corner of the screen, the"
zP�"total characters sent.  After a short delay you are returned to the menu."
��""
�N�"Inbound CR/LF (CR - carriage return, LF - line feed).  This is normally"
�P�"set to ON which means that when a CR code is received it will append a LF"
�O�"code when the character is sent to the screen forcing the cursor on to a"
�P�"new line.  Some computers will send both a CR and a LF code so the option"
�K�"is there to remove the LF appended by the Electron.  Pressing  I  or"
�>�"RETURN on this option toggles between CR/LF ON and OFF."
��""
�P�"Outbound CR/LF - this is normally set to ON which means that when sending"
�P�"a CR code it will append a LF code when it is sent to the screen, forcing"
�P�"the cursor on to a new line.  Some files may have LF codes present so the"
�O�"option is there to remove the one appended by the Electron.  Pressing  O"
�A�"or RETURN on this option toggles between CR/LF ON and OFF."
�""
�"NOTES"
�""
$O�"View files do not have the LF code present so the default setting is ON."
.�""
8M�"The I and O option only affects the screen and not the contents of the"
B�"file."
L�""
V �"(Q) Returns you to BASIC."
`�""
j3�"* COMMANDS can be issued from the main menu."
t�""
~L�"To over-come the problem of sending BASIC programs to other computers"
�N�"simply *SPOOL the program and *EXEC it back to BASIC once stored in the"
��"destination computer."
��""
�J�"The Serial interface is set to the default settings of the Electron"
�1�"Computer and shouldn't need to be altered:"
��""
�2�"Start Bits  1               Stop Bits     1"
�5�"Data Bits   8               Baud Rate     9600"
��""
�O�"In the unlikely event that they do need changing, they can be by listing"
�K�"line Numbers 530 to 590 and changing the *FX values.  See your RS423"
�F�"Peripheral User Guide or the BBC User Guide for the new values."
�""

�""
�"Derek Walker"

�"Jan'94"
#P�"*************************************************************************"
(�
�

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00001680  ff                                                |.|
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