Virtual UART

Details Virtual UART Virtual UART

1995-09-29

1998-09-22

Teska, Kevin J.

G06F 9455

Patent

active

058128204

ABSTRACT:
The present invention is a computer operating system method for allowing applications running in Virtual Machines, including but not limited to DOS applications, making direct UART I/O accesses under Windows for Workgroups.TM. or Windows 95.TM. operating systems to access VCOMM port drivers installed in the system. The invention involves the steps of: (1) receiving from the application instructions for a UART; (2) simulating a UART by returning to the application simulations of the responses of a UART; (3) translating the instructions for a UART into instructions for VCOMM; (4) sending the translated instructions to VCOMM; receiving responses from VCOMM; (5) translating the responses from VCOMM intosimulated responses from a UART; and (6) transmitting the simulated responses from a UART to the application.

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