Exogam VXI crate Infrastructure Specification.
The infrastructure of a VXI crate consists of three items. The 'D' size crate and power supply, the Slot 0 Resource manager, and the VRE (VXI Readout Engine).
The 'D' size crate.
The crate must be to the following minimum specification as defined by I.H.Lazarus.
Purchase a Wiener crate from Plein & Baus GmbH.
Contacts:
http://www.wiener-d.comUK: Southern Scientific +44 (0) 1903 821178
France: Alimtronic +33 1 45 47 85 26
VXI modules
Resource Manager STR8032
This card is modular based on a commercial processor from CES, with parts from two other sources. Most of the VXI module parts are provided by Bastian Technology, and a special visualisation module from Daresbury.
Purchase the VXI module from Bastian Technology as
Purchase the processor from CES, or arrange for Bastian Technology to purchase direct from CES.
Purchase a Resource Manager Logic Analyser from NPSG.
VRE (VXI Readout Engine) STR8080.
This card is modular with parts from two sources.
Purchase the VXI module from Bastian Technology as:
The request for this module should include the following statement:
The STR8080 must be compatible with those purchased for the Euroball experiment. Including the modification agreed 16 April 1996 between Dr.B.Struck, Daresbury Laboratory, and CRN Strasbourg..
A copy of the modification request sheet is appended.
Purchase an STR8080 P3 card from NPSG.
VXI module Contacts
NPSG: |
Mr.P.J.Coleman-Smith |
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+44 1925 603433 |
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CLRC, Daresbury Laboratory |
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Bastian Technology |
Mr.T.Bastian |
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+49 41 09 55 0 |
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Bastian Technology GmbH & Co |
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CES |
Ms. Maryse Allard |
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+41 22 792 57 45 |
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Creative Electronic Systems |
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CHANGES TO THE STR8080 REQUESTED BY DARESBURY AND STRASBOURG.
1) Change the arbitration mode of the VME Bus master from Release-when-Done to Release-on-Request.
2) Change the format of the 'end sub-event token' used for detecting the sub-event boundaries in the data being read from the FIFO connecting the DSP to the DT32 card as follows:-
MSB LSB
OLD xxYY xxxx 1111 1111 xxxx xxxx xxxx xxxx
NEW xx11 xxxx 1111 1xxx xxxx xxxx xxxx xxxx
This can be done by changing a GAL.
3) Change the logic that detects the 'event number' nibble in the 'end sub event' token to look in the 'start sub event' token, and compare it with the 'event number' nibble found in the first 'start sub event' token for each event. If there is a difference the logic currently sets bit 31 in its 'end sub event' token. This can be kept.
TOKEN FORMAT:
MSB LSB
first start sub event xx00 0001 1111 1xxx xxxx xxxx xxxx xxxx
( )
'event number' nibble
used for compare with all others in this event.
next start sub event xx00 0010 1111 1xxx xxxx xxxx xxxx xxxx
( )
'event number' nibble
.
.
.
.
last start sub event xx00 1111 1111 1xxx xxxx xxxx xxxx xxxx
( )
'event number' nibble
4) Add a flag to the Status Register for "DT32 FIFO half full". This refers to the FIFO
between the DSP card and the DT32 card which is used to queue data onto the DT32 bus.
5) Identify four latched bi-directional data lines which may be used to connect the DSP processor to a future P3 module. Also identify control lines to associate with them. Read/write, and strobe for example.
6) Add wire links on the P2 connector to bus some VXI signals past the board:-
Links:
p2a5 to p2c5 p2a6 to p2c6
p2a8 to p2c8 p2a9 to p2c9
p2a12 to p2c12 p2a14 to p2c14
p2a17 to p2c17 p2a18 to p2c18
p2a20 to p2c20 p2a21 to p2c21
None of the above lines is to be terminated on the STR8080 unless the termination can be removed by software control.
7) Provide EMI shielding of the board to VXI 'D' size standard. The system used on the STR8032 would be acceptable, mounting the shields on pillars from the board support metal work, PLEASE RETAIN THE ABILITY TO FIT A P3 MODULE.
Modification of existing units in the field will be carried out by laboratory staff using parts and instructions provided by Struck PLEASE PRICE THESE KITS. The staff will be technicians or engineers.
Please provide copies of the circuit diagrams of the STR8080.