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Vidicode Argus Basic Programmers Reference Manual

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Page 31

ARGUS Programmable Modem 
BASIC Programmers Reference Manual 
© 1990 - 1997 Vidicode Datacommunicatie BV 
28
  
AND    logical AND 
AND performs a bitwise logical AND operation on two numeric values; i.e. each bit of the first operand is ANDed with the 
equivalent bit in the second operand.  The result of 12 AND 5 is therefore calculated as follows: 
 operand 1 12 = 00000000 00001100 
  operand 2    5 = 00000000 00000101 
 result 4 = 00000000 00000100 
The most common use of AND is to check whether or...

Page 32

ARGUS Programmable Modem 
BASIC Programmers Reference Manual 
© 1990 - 1997 Vidicode Datacommunicatie BV 
29
  
ANSWER    answer a call 
ANSWER is used to make the modem answer a call and is identical to the modem command A (ATA).  The modem will take 
the line and produce an answer tone, and a carrier or a baud rate scan, as set with the various relevant S-registers. 
A typical application is when you do not want to make the modem auto-answer, but first want to observe certain conditions 
e.g.: 
50 ON...

Page 33

ARGUS Programmable Modem 
BASIC Programmers Reference Manual 
© 1990 - 1997 Vidicode Datacommunicatie BV 
30
  
ASC    ASCII value 
ASC returns the ASCII code of its character parameter.  For example: 
ASCB
will return the value 66. 
 
When the parameter is a string of more than one character, the ASCII code for the first character in the string is returned, so 
that: 
ASCJohn
will return the value 74 -- the ASCII code for the letter J. 
Examples: 
X=ASC @
X=ASC X$
PRINT ASC g
Char=ASC GET$
Syntax:...

Page 34

ARGUS Programmable Modem 
BASIC Programmers Reference Manual 
© 1990 - 1997 Vidicode Datacommunicatie BV 
31
  
AT    AT scan 
AT is used to initiate AT scanning on one or both of the two serial ports.  This is the means by which Hayes compatible 
modems determine the speed and data format being used by the terminal to which they are attached.  When operating in this 
mode, the modem will scan the specified ports for incoming data.  The bit pattern produced by the two characters A and T 
is unique and...

Page 35

ARGUS Programmable Modem 
BASIC Programmers Reference Manual 
© 1990 - 1997 Vidicode Datacommunicatie BV 
32
  
There are four variations of the command: 
AT (#[port]) (SLASH) ON/OFF 
This will enable or disable the state of a port, where it is waiting for an AT to be entered.  When AT is entered, the port is re-
configured.  To respond to the AT entered, you will have to enable and use the ON AT event.  When SLASH is added as 
an option and the ON SLASH event is enabled, this event can also be generated...

Page 36

ARGUS Programmable Modem 
BASIC Programmers Reference Manual 
© 1990 - 1997 Vidicode Datacommunicatie BV 
33
  
AT [string]
See also: 
BAUD, LENGTH, PARITY, SBITS, INPUT AT,
ON AT,ON SLASH
  

Page 37

ARGUS Programmable Modem 
BASIC Programmers Reference Manual 
© 1990 - 1997 Vidicode Datacommunicatie BV 
34
  
AUTO    automatic line numbering 
AUTO is used during direct programming to enable automatic generation of the next line number each time [Return] is 
pressed. 
 
The command has two optional parameters which specify the start line number and the increment. 
 
When used without parameters, the start line number and increment are both 10, and the sequence of line numbers 
generated will be 10,...

Page 38

ARGUS Programmable Modem 
BASIC Programmers Reference Manual 
© 1990 - 1997 Vidicode Datacommunicatie BV 
35
  
BAUD    set baud rate 
BAUD is used to set or read the communications speed of the specified serial port.  If no port number is specified, the default 
output port as defined by OPORT will be assumed.  The second parameter is a code which represents the required baud 
rate according to the following table: 
 
Code Baud rate 
0 75 
1 150 
2 300 
3 600 
4 1200 
5 2400 
6 4800 
7 7200 
8 9600 
9...

Page 39

ARGUS Programmable Modem 
BASIC Programmers Reference Manual 
© 1990 - 1997 Vidicode Datacommunicatie BV 
36
  
AT, LENGTH, PARITY, SBITS
  

Page 40

ARGUS Programmable Modem 
BASIC Programmers Reference Manual 
© 1990 - 1997 Vidicode Datacommunicatie BV 
37
  
BOOT ON/OFF    enable/disable BOOT file 
After every reset, the modem looks for a file BOOT in the RAM/ROM/FLASH- or Hard-disk. 
 
In case of a RAM-disk in an Argus Programmable Modem, it first looks in socket 1, with the first filing system and if it cannot 
find it, it will look in socket 2, if there is a ROM/RAM in socket 2. 
 
If the BOOT file is found, it is loaded in BASIC at PBOT=&3000...
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