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'''DOMINO''' is a range of high speed IO-controllers for [[ND-5000]] computers. DOMINO introduces new hardware and software architecture.

The DOMINO Controllers are connected to the common [[Multi-Function bus|MF-Bus]] memory (former [[MPM-5]]). Each controller is capable of transferring data to and from this memory via [[DMA]]. Synchronization between controllers and CPU:s is done via semaphore cycles.<ref>{{ND-doc|820026.1|preface}}</ref>

== Physical Implementation ==

A DOMINO Controller is built according to common specifications. The local CPU is a 68020 running [[DOMINOS]], an operating system kernel.
DOMINO cards fits into the MF-bus crate and has a MF-bus controller. The MF-bus controller have a connector where a terminal can be connected for configuration and maintenance purpose.

=== Local Memory ===

A DOMINO controller can have between 1/2 to 8 Mbyte local memory with parity.

=== Status LED ===

A DOMINO controller has at least three LED:s in different colors.
* Yellow, shows activity of the 68020 controller. It shows running or idling.
* Green, shows if the application is running or not.
* Red, shows an error condition by flashing different patterns.
** Off, no errors detected.
** Constant on, selftest found some error after reset.
** Fast flashing (on and off in 0,5s pulses), OPCOM receives a NAK when expecting a ACK.
** Short one long off, something unusable received from OCTOBUS.
** Two short on one long off, error returned when connecting to OMD.
** Three short on one long off, MPROTSET returns error when setting up memory protection.
** One long and two short on, host switch stack is empty, nobody to send to.
** One long and three short on, OCTOBUS driver interface called with invalid function code.
** One long and four short on, OCTOBUS driver returns error when connecting to emergency message 177B or 176B.
** One long and seven short on, the path used in OPCOM is unknown.
** Regular very slow flashing, error returned from OCTOBUS driver when sending.
** Regular flashing long on short off, overflow on the host switch stack.

== Software components ==

[[PROMAN]], short for PROcessor MANager, is a server process running on ND-100. It is started immediately after system start and is responsible for booting the DOMINO controllers. Requests to PROMAN are sent by [[NUCLEUS]].
Configuration of DOMINO controllers are made either automatically via predetermined images or manually via a configuration file.
Configuration is normally done at system integration to suit the customers need but can be changed by field technicians.

== Module numbers ==

{| class="wikitable"
|-
! Module Number !! Hardware-id !! Type of module
|-
| 5B || VMEI || VME-bus interface
|-
| 20B || IPI3 || IPI level III controller
|-
| 21B || SCSI || SMDE controller (SCSI)
|-
| 22B || ETH3 || Ethernet III
|-
| 23B || FPS5 || FPS-5000 controller
|-
| 24B || TERM || Terminal controller
|-
| 25B || GRAP || Graphical controller
|-
| 26B || MFCC || Multi function comms controller
|-
| 27B || VMEC || VME-bus controller
|-
| 30B || DMAC || MF-DMA controller
|}

==References==
<references/>
[[Category:Glossary]]

DOMINO - Revision history

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