Technical information

NewBIOS Reference Serial Solutions
Service B4H, Get Serial Solution Capability______________________________________
Compatibility._____________
NewBIOS service only, ignored by PC ROM BIOS.
Parameters.___________
AH = B4H Denotes service B4H
Return Values._____________
AX = 52ADH Flag for presence of NewBIOS
BX = Version Of Serial Solutions eg 2.95
BH = Major Version Number eg 2
BL = Minor Version Number eg 95 (range 0-99)
DX = Max Number Of Devices Supported -1
newcom.sys =15 COM1-COM16
newcom24.sys =23 COM1-COM24
newcom32.sys =31 COM1-COM32
Meaning._________
Service B4H informs NewBIOS/NewMODE of the current
version number of Serial Solutions and of now many serial port
devices it supports.
Chapter 5 Page 107