INT 14 - COMM-DRV v14.0 - READ UART(Universal Asyncronous Receiver/Transmitter) A peripheral device which converts a sequence of bytes into a serial bit stream at a programmable rate, and vice versa. This device is what makes an RS-232 serial port function. See also USART. REGISTER
AH = 8Ch
AL = register offset
DX = port number
Return: AH bit 7 set on error
AH bit 7 clear if successful
AL = contents of UART(Universal Asyncronous Receiver/Transmitter) A peripheral device which converts a sequence of bytes into a serial bit stream at a programmable rate, and vice versa. This device is what makes an RS-232 serial port function. See also USART. register
SeeAlso: AH=8Dh"COMM-DRV"