Guest_imported
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- Jan 1, 1970
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Hi
What's the decimal address of the 9 pin serial port?
Thanks,
Brad Harris
What's the decimal address of the 9 pin serial port?
Thanks,
Brad Harris
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Serial Port Address ...
- Thread starter Guest_imported
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COM1, 2, 3, 4 etc????
Typically, Com1 is 1016 decimal (3f8 hex)
and Com2 is 760 decimal (2f8 hex)
These addresses, while usually correct, are not guaranteed to be as stated because they are hardware dependant. What is wrong with using the functions supplied with Basic that do all this for you:
eg:
OPEN "com1:1200,n,8,1,cd0,cs0,ds0,op0,rs,tb256,rb256" FOR OUTPUT AS #1 LEN = 256
And then use something like:
PRINT #1, CHR$(255);
To send the byte 255 out the port at 1200 baud or whatever... This way you get buffered IO and don't have to worry about polling the port or dealing with interupts etc..
Kim_Christensen@telus.net
Typically, Com1 is 1016 decimal (3f8 hex)
and Com2 is 760 decimal (2f8 hex)
These addresses, while usually correct, are not guaranteed to be as stated because they are hardware dependant. What is wrong with using the functions supplied with Basic that do all this for you:
eg:
OPEN "com1:1200,n,8,1,cd0,cs0,ds0,op0,rs,tb256,rb256" FOR OUTPUT AS #1 LEN = 256
And then use something like:
PRINT #1, CHR$(255);
To send the byte 255 out the port at 1200 baud or whatever... This way you get buffered IO and don't have to worry about polling the port or dealing with interupts etc..
Kim_Christensen@telus.net
- Status
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