http://brownywalking.blogspot.com/2009/03/tip-sleep-geek.html
Month: November 2009
[Linux] IRQ
From setserial manual … The “standard MS-DOS” port associations are given below: /dev/ttys0 (COM1), port 0x3f8, irq 4/dev/ttys1 (COM2), port 0x2f8, irq 3/dev/ttys2 (COM3), port 0x3e8, irq 4/dev/ttys3 (COM4), port 0x2e8, irq 3 Due to the limitations in the design of the AT/ISA bus architecture, normally an IRQ line may notbe shared between two or […]