serial port (com1) on 5.3

[Dan Nelson]

In the last episode (Dec 24), Jason said:
> running 5.3-STABLE, 
> from my dmesg at boot,
> sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
> sio0: type 16550A, console
> sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
> sio1: type 16550A
> 
> so where is /dev/sio0 and /dev/sio1??
> jason at monsterjam jason $ ls -al /dev/sio*
> ls: /dev/sio*: No such file or directory

Callout devices are /dev/cuaa*, callin devices are /dev/ttyd* .  See
the sio manpage for more info.

-- 
	Dan Nelson
	dnelson at allantgroup.com