forked from epics_driver_modules/motorBase
Ron Sluiter
39 lines
1.3 KiB
Plaintext
39 lines
1.3 KiB
Plaintext
Delta Tau PMAC
|
|
==============
|
|
|
|
Notation: "$" denotes hexadecimal number.
|
|
|
|
Configuring PMAC
|
|
----------------
|
|
|
|
- Set the "VMEbus Address Modifier" (I90):
|
|
- $39 for A24 addressing (default).
|
|
- $9 for A32 addressing.
|
|
- 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
|
|
most significant hex nibble; e.g. for $A123 0000 set I92 to $A1. The
|
|
default value ($FF) is N/A.
|
|
- Leave the "VME Mailbox Address Bits A23-A16" (I93) at the default value
|
|
($7F) so it does not conflict with the DPRAM.
|
|
- Leave the "VME Mailbox Address Bits A15-A08" (I94) at the default value
|
|
($A0) so it does not conflict with the DPRAM.
|
|
- Set
|
|
|
|
|
|
- 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.
|
|
|