forked from epics_driver_modules/motorBase
Ron SluiterDelta Tau PMAC ============== Notation: "$" denotes hexadecimal number. Configuring PMAC ---------------- - Set the "VMEbus Address Modifier" (I90): - $39 for A24 non privileged data access (default). - $3D for A24 supervisory data access. - $9 for A32 non privileged data access. - $D for A32 supervisory data access. - Enable both "supervisory" and "non-privileged" VMEbus data access by setting the "VMEbus Address Modifier Don't Care Bits" (I91) to $4 (default). - For A32 addressing only, set the "VME Base Address Bits A31-A24" (I92) to the two most significant hex nibbles; e.g. for $A123 0000 set I92 to $A1. The default value ($FF) is N/A. - Set the "VME Mailbox Address Bits A23-A16" (I93) so it does not conflict with the DPRAM (default value - $7F). - Set the "VME Mailbox Address Bits A15-A08" (I94) so it does not conflict with the DPRAM (default value - $A0). - Set the "VME DPRAM Base Address Bits A23-A20" (I97); for example, - for A32 addressing, at base address $A123 0000 set I97 to $23. - for A24 addressing, at base address $00D0 0000 set I97 to $D0. The default value is $0. - Set the "VME DPRAM Enable" (I98) to $E0 to enable DPRAM access; the default value is $60. - Set the "VME Address Width Control" (I99) to: - $90 for A24 addressing. - $80 for A32 addressing. The default value is $30. - Enable DPRAM ASCII communication; set I58 to 1. - Download "Suggested M-variable definitions". In particular, this device driver uses; - M0161->D:$088 - M0162->D:$08B - M0261->D:$108 - M0262->D:$10B ... ... - M3261->D:$1008 - M3262->D:$100B