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flat assembler > DOS > How to program the COM port??

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milind



Joined: 15 Feb 2004
Posts: 33
Hello,
I need to make routines that can program the COM port and write or read data from it. Like the normal Hyperterminal facility of windows. Please help.
Post 02 Jun 2004, 14:09
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neonz



Joined: 02 Aug 2003
Posts: 62
Location: Latvia
Well, there are three ways to do this:

1) through DOS - just use standart DOS file i/o calls with "files" named COM1, COM2, COM3, COM4
2) through BIOS - http://www.ctyme.com/intr/int-14.htm
3) using direct port i/o

http://www.nondot.org/sabre/os/files/Communication/ser_port.txt is good reference to serial port programming.
Post 02 Jun 2004, 21:49
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