Delta Tau GEO BRICK LV Guide D’Exploitation
Turbo PMAC/PMAC2 Software Reference
Turbo PMAC Global I-Variables
77
Default:
0
I85 is used to store the order of the Turbo PMAC2 in the MACRO ring. The first device (Turbo PMAC2,
MACRO Station, or other device) “downstream” in the ring from the ring controller is 1, the next is 2,
and so on. If I85 is 0, the Turbo PMAC2 has not been assigned an order in the ring yet.
MACRO Station, or other device) “downstream” in the ring from the ring controller is 1, the next is 2,
and so on. If I85 is 0, the Turbo PMAC2 has not been assigned an order in the ring yet.
If I85 has a value from 1 to 254, the Turbo PMAC2 will respond when the {constant} in the
MACROSTASCII{constant} command matches the value of I85. The first device in the ring with I85
= 0 will respond to the MACROSTASCII255 command.
MACROSTASCII{constant} command matches the value of I85. The first device in the ring with I85
= 0 will respond to the MACROSTASCII255 command.
Note:
For the ring controller, I85 should remain at 0, even though it has no effect on the
ordered ring communications.
ordered ring communications.
The STN command will return the value of I85.
See Also:
Commands MACROSTASCII, STN
Commands MACROSTASCII, STN
VME/DPRAM Setup I-Variables
I90
VME Address Modifier
Range:
$00 - $FF
Units:
None
Default:
$39
I90 controls which address modifier value Turbo PMAC will respond to when sent by the VME bus host.
I90 takes one of three valid values in normal use, depending on the address bus width used:
I90 takes one of three valid values in normal use, depending on the address bus width used:
I90 = $29: 16-bit addressing
I90 = $39: 24-bit addressing
I90 = $09: 32-bit addressing
I90 is actually used at power-on/reset only, so to set or change the VME address modifier, change the
value of I90, store this new value to non-volatile flash memory with the SAVE command, and reset the
card with the $$$ command. The active register into which the value of I90 is copied at power-on/reset
is X:$070006 bits 0 – 7. It is permissible to write to this register directly (suggested M-variable M90) to
change the active setup without a SAVE and reset.
value of I90, store this new value to non-volatile flash memory with the SAVE command, and reset the
card with the $$$ command. The active register into which the value of I90 is copied at power-on/reset
is X:$070006 bits 0 – 7. It is permissible to write to this register directly (suggested M-variable M90) to
change the active setup without a SAVE and reset.
I91
VME Address Modifier Don’t Care Bits
Range:
$00 - $FF
Units:
None
Default:
$04
I91 controls which bits of the I90 VME address modifier are “don’t care” bits. I91 is set to $04 in all
normal use, which permits both “non-privileged” and “supervisory” data access by the VME host.
I91 is actually used at power-on/reset only, so to set or change the VME address modifier don’t care bits,
change the value of I91, store this new value to non-volatile flash memory with the SAVE command, and
reset the card with the $$$ command. The active register into which the value of I91 is copied at power-
on/reset is X:$070007 bits 0 – 7. It is permissible to write to this register directly (suggested M-variable
M91) to change the active setup without a SAVE and reset.
normal use, which permits both “non-privileged” and “supervisory” data access by the VME host.
I91 is actually used at power-on/reset only, so to set or change the VME address modifier don’t care bits,
change the value of I91, store this new value to non-volatile flash memory with the SAVE command, and
reset the card with the $$$ command. The active register into which the value of I91 is copied at power-
on/reset is X:$070007 bits 0 – 7. It is permissible to write to this register directly (suggested M-variable
M91) to change the active setup without a SAVE and reset.
I92
VME Base Address Bits A31-A24
Range:
$00 - $FF
Units:
None
Default:
$FF