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.Dd February 26, 2021
.Dt MCA 4
.Os
.Sh NAME
.Nm mca
.Nd introduction to machine-independent MCA bus support and drivers
.Sh SYNOPSIS
.Cd "mca0 at mainbus?"
.Pp
.Cd options MCAVERBOSE
.Pp
Machine-dependent; depends on the bus topology and
.Tn MCA
bus interface of your system. Typical
.Tn MCA
buses are connected directly to the main system bus.
.Sh DESCRIPTION
.Nx
includes a machine-independent
.Tn MCA
bus subsystem and several machine-independent
.Tn MCA
device drivers.
.Sh HARDWARE
.Nx
includes machine-independent
.Tn MCA
drivers, sorted by device type and driver name:
.\"
.Ss SCSI controllers
.Bl -tag -width speaker -offset indent
.It Xr aha 4
Adaptec AHA-1640
.Tn SCSI
interface
.It Xr esp 4
NCR 53C90
.Tn SCSI
Adapter
.El
.\"
.Ss Disk and tape controllers
.Bl -tag -width speaker -offset indent
.It Xr edc 4
IBM ESDI Fixed Disk Controller
.El
.\"
.Ss Serial interfaces
.Bl -tag -width speaker -offset indent
.It Xr com 4
NS8250-, NS16450-, and NS16550-based serial cards.
.El
.\"
.Ss Network interfaces
.Bl -tag -width speaker -offset indent
.It Xr ate 4
Allied-Telesis 1720 Ethernet interface cards
.It Xr we 4
WD/SMC WD80x3x Ethernet interface cards and clones
.It Xr le 4
SKNET Personal and MC+ Ethernet interface cards
.It Xr elmc 4
3Com EtherLink/MC (3c523) Ethernet interface
.It Xr ep 4
3Com EtherLink III 3c529 Ethernet interface
.It Xr tra 4
Tiara LANCard/E and Standard MicroSystems 3016/MC Ethernet interface
.El
.\"
.Sh SEE ALSO
.Xr intro 4 ,
.Xr mca 9
.\"
.Sh HISTORY
The machine-independent
.Tn MCA
subsystem appeared in
.Nx 1.5 .