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AX = FFFFh BX:SI -> DWORD buffer for address of information area (see #00404) (initialized to zeros)
Return:
BX:SI buffer filled with nonzero value if installed
Program: COMM-DRV is a universal serial communications driver by Willies' Computer Software Company, which supports standard INT 14 and FOSSIL calls as well as its own interfaces
Index:
Installation check;COMM-DRVFormat of COMM-DRV information area: Offset Size Description (Table 00404) 00h 8 BYTEs signature "COMM-DRV" 08h 2 BYTEs 00h,00h 0Ah DWORD -> direct address mapping table 0Eh DWORD previous INT 14 vector
Category: Serial I/O - Int 14h - C
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