EM4K(4) | Device Drivers Manual (amiga) | EM4K(4)

# NAME

`em4k` —
ELBOX Mediator 4000 PCI bridge driver

# SYNOPSIS

`em4k0 at zbus0`
`emmem0 at zbus0`
`pci* at empb0`
`options PCI_NETBSD_CONFIGURE`

# DESCRIPTION

The `em4k` driver provides support for the PCI bus present on Mediator 4000 bridge and associated PCI/Zorro daughterboards.

# HARDWARE

The `em4k` driver supports the following hardware:

ELBOX Mediator PCI 4000D
ELBOX Mediator PCI 4000Di
ELBOX Mediator PCI 4000T
ELBOX Mediator PCI 3000D
ELBOX Mediator PCI 3000T

MK-II editions are also supported.

# SEE ALSO

amiga/empb(4), amiga/mppb(4), amiga/p5pb(4), pci(4)

# HISTORY

The `em4k` device first appeared in NetBSD 7.0.

# AUTHORS

The `em4k` driver was written by Radoslaw Kujawa <radoslaw.kujawa@gmail.com>. It was developed using information obtained through reverse engineering by Frank Wille and Radoslaw Kujawa. The authors have no access to official documentation (which is only available under NDA).

# BUGS

DMA to host memory is not supported. It is unclear if the hardware supports DMA to host memory at all. It is possible to implement DMA through bounce buffers in graphics card memory, but this needs further research.

February 17, 2017 | NetBSD 9.4