---
name: "esp"
section: "4freebsd"
platform: "linux"
package: "freebsd-manpages"
version: "12.2-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/esp/4freebsd"
---

# esp(4freebsd)

Emulex ESP, NCR 53C9x and QLogic FAS families based SCSI controllers

## NAME

**esp** – Emulex ESP, NCR 53C9x and QLogic FAS families based SCSI controllers

## SYNOPSIS

To compile this driver into the kernel, place the following lines in your kernel configuration file:

**device scbus** **device esp**

Alternatively, to load the driver as a module at boot time, place the following line in [loader.conf(5)](/loader.conf/5.md):

```
if_esp_load="YES"
```

## DESCRIPTION

The **esp** driver provides support for the AMD Am53C974, the Emulex ESP100, ESP100A, ESP200 and ESP406, the NCR 53C90, 53C94 and 53C96 as well as the QLogic FAS100A, FAS216, FAS366 and FAS408 SCSI controller chips found in a wide variety of systems and peripheral boards.

## HARDWARE

Controllers supported by the **esp** driver include:

- Sun ESP family

- Sun FAS family

- Tekram DC390

- Tekram DC390T

## SEE ALSO

[cd(4)](/cd/4.md), [ch(4)](/ch/4.md), [da(4)](/da/4.md), [intro(4)](/intro/4.md), [pci(4)](/pci/4.md), [sa(4)](/sa/4.md), [sbus(4)](/sbus/4.md), [scsi(4)](/scsi/4.md), [camcontrol(8)](/camcontrol/8.md)

## HISTORY

The **esp** driver first appeared in NetBSD 1.3. The first FreeBSD version to include it was FreeBSD 5.3.

## AUTHORS

The **esp** driver was ported to FreeBSD by Scott Long ⟨*scottl@FreeBSD.org*⟩ and later on considerably improved by Marius Strobl ⟨*marius@FreeBSD.org*⟩.

## BUGS

The **esp** driver should read the EEPROM settings of Tekram controllers.