Category : BASIC Source Code
Archive   : QBFAQR01.ZIP
Filename : CDECT.BAS

 
Output of file : CDECT.BAS contained in archive : QBFAQR01.ZIP
FUNCTION pcrCarrierDetect% (Com%)

'Purpose : Detects carrier.
'Input : 1 - 4 for Com ports ... assumes changed irqs if > 2
'Return : -1 if carrier detected, 0 if not CD, 2 if out of range

pcrCarrierDetect% = 0
IF Com% = 1 THEN Addr = &H3FE
IF Com% = 2 THEN Addr = &H2FE
IF Com% = 3 THEN Addr = &H3EE
IF Com% = 4 THEN Addr = &H2EE
IF Addr = 0 THEN pcrCarrierDetect% = 2: EXIT FUNCTION
IF (INP(Addr) AND 128) THEN pcrCarrierDetect% = -1
END FUNCTION


  3 Responses to “Category : BASIC Source Code
Archive   : QBFAQR01.ZIP
Filename : CDECT.BAS
”

  1. Daniel says:
    January 27, 2013 at 3:59 pm

    Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. Joshie says:
    March 18, 2014 at 4:57 pm

    This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. DiskingRound says:
    January 14, 2015 at 10:57 pm

    But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/