Section 4: Special Files (low-level device access)

intro - introductrion to special devices
atod - analog-to-digital converter
dmaad - direct memory access analog-to-digtial conversion
dmada - direct memory access digital-to-analog conversion
dtoa - digital-to-analog conversion
hco - write and read the high current output buffer
ibuf - read digital input buffer
progrmbl_clk - controls the real-time programmable clock
tty - general terminal interface