105 Parallel Port Device Drivers DevelopmentIssues, queries, suggestions or discussion related to Device drivers, parallel port device drivers, Linux based parallel port driver.
Most personal computers today are equipped with a parallel port, commonly used to connect the computer to a parallel printer. Because it is available on most personal computers, the parallel port is a perfect choice for connection to other peripheral devices. However, communication to peripherals across the parallel port is limited because the interface is traditionally unidirectional and there is no standard specification for the interface. Additionally, although the performance of the PC has dramatically increased, the parallel port has remained the same. This situation has led to the development of a new parallel port standard – IEEE Standard 1284-1994. This standard is based on the original Centronics Standard Parallel Port (SPP) specification, and includes the Enhanced Parallel Port (EPP) and Extended Capabilities Port (ECP).
Why the VLSI engineers & developers don't think of designing BIT ADDRESSABLE CONTROL & STATUS registers of 74LS244 while bit addresable registers are their in AVR / 8051 micro-controllers.
