ACCES 104-QUAD-8 driver

modulename: 104-quad-8.ko

configname: CONFIG_104_QUAD_8

Linux Kernel Configuration
└─>Device Drivers
└─>Counter support
└─>Industrial I/O support
└─>ACCES 104-QUAD-8 driver
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Say yes here to build support for the ACCES 104-QUAD-8 quadrature
encoder counter/interface device family (104-QUAD-8, 104-QUAD-4).

A counter's respective error flag may be cleared by performing a write
operation on the respective count value attribute. Although the
104-QUAD-8 counters have a 25-bit range, only the lower 24 bits may be
set, either directly or via the counter's preset attribute. Interrupts
are not supported by this driver.

The base port addresses for the devices may be configured via the base
array module parameter.

source code: