vmusb

Determines, along with the options -inverto1 and -latcho1 the behavior of NIM output O1. This can be any of the following values: busy, trigger, busrequest, eventdatatobuvffer, dgga, endevent or usbtrigger.

Inverts the sense of the O1 nim output.

Latches the O1 asserted when the condition that asserts it is met.

Along with the options -inverto2 and -latcho2, controls when the NIM O2 output is asserted. This can be any of: usbtrigger, vmecommand, vmeas, eventdataobuffer, dgga, dggb, or endevent.

Inverts the sense of the NIM O2 output.

Latches the state of the O2 NIM output when the condition that would assert it is met.

Together with -inverttopyellow and -latchtopyellow determines when the top Yellow LED of the VM-USB is lit. This can be any of the following values: ofifonotempty, infifonotempy, scaler infifofull, berr, vmebr, or vmebg.

Inverts the sense of the top yellow LED.

Latches the top yellow LED in the on state when the condition is met that would light it.

Together with the -invertred and -latchred options controls the when the red LED on the VM-USB front panel is lit. This can be one of the following value: trigger, nimi1, nimi2, busy, dtack, berr, vmebr or vmebg.

Inverts the state of the red LED.

Latches the red led on when the condition to light it has been met.

Together with the -invertgreen and -latchgreen, determines when the green LED is lit. This can be one of the following values: acquire, stacknotempty, eventready, trigger, dtack, berr, vmebr or vmebg.

Inverts the condition that lights the green LED.

If true, the green LED is latched in the on state once the condition that would light it is met.

Together with -invertbottomyellow and -latchbottomyellow determines when the bottom yellow LED is lit. The value of this option can be any of the following values: notslot1, usbtrigger, usbreset, berr, dtack, vmebr or vmebg.

Inverts the condition that lights the bottom yellow LED.

Latches the bottom yellow LED in the lit state once the condition is met to light it.

If this is true the two scalers A and B will be read by the stack in which the vmusb is module is put. The A scaler is read first followed by the B scaler. See -scalera and -scalerb below which define when each scaler increments.

This option is ignored unless -readscalers is true. If -incremental is true, scalers are cleared after they are read. Note that since the VM-USB has no mechanism to atomically read and clear scalers, counts can be lost between the read and clear.

Determines the condition that increments scaler A. This can be one of the following values: dgga, nimi1, nimi2 or event.

Determines the condition that increments scaler B. This can be one of the following values: carry,, nimi1, nimi2 or event. The carry value means that scaler B is incremented when scaler A overflows. This allows both scalers to be combined into a single 64 bit scaler that is incremented by the condition defined in the -scalera option.

Determines the condition that causes the signal to be generated by the DGGA device. Options are: off, nimi1, nimi2,trigger, endofevent,usbtrigger, and pulser. The default option is pulser.

Determines the condition that causes the signal to be generated by the DGGB device. Options are: off, nimi1, nimi2,trigger, endofevent,usbtrigger, and pulser. The default option is nimi2.

Determines the width of the gate produced by dgga in units of 12.5 ns.

Determines the amount of time in units of 12.5 ns to delay the gate output of dgga once it has been triggered.

Determines the width of the gate produced by dggb in units of 12.5 ns.

Determines the amount of time in units of 12.5 ns to delay the gate output of dggb once it has been triggered.

Sets whether scaler and event data can coexist in the same buffer. The default is false.

Sets whether event data can span buffer boundaries. Default is false.

If set to true, the VM-USB will immediately output scaler data once a scaler stack is executed. Default is false.

Determines the bus request level that the VMUSB will use for itself when it requests ownership of the bus. The valid values are any in the range [0,7] and the default value is 4.

Determines whether a second optional header word will follow the first buffer header word. When present, this extra header specifies the number of words in the buffer. The default value is false.

Determines size of the internal buffer used by the VMUSB in units of words. The VMUSB fills the buffer before outputting data on a usb_bulk_read so a smaller buffer size is useful for low data rates. The optional values are: 13k, 8k, 4k, 2k, 1k, 512, 256, 128, 64, and evtcount. The evtcount option depends on the value of the -eventsperbuffer option. The default value is 13k.

If the -bufferlength option is set to evtcount, this determines how many events must occur before transferring data to the FIFO for readout. The values can be any in the range [1,4095]. The default value is 1.