Int 14 Fn 08 - Digiboard Digichannel PC/x* - Alternate Status Check [S] AH = 08h DX = port number (00h-03h) (04h-43h for XAPCM232.SYS) Return: AH = RS232 status bits (see AH=03h) ZF set if no characters queued ZF clear if character available AL = next character See Also: AH=03h,AH=08h"PC-MOS",AH=09h"Digiboard"