VME-CAN4 addresses

Note that the following text only shows the default configuration of the VME-CAN4 cards. If you use vcanDrvp or vcanDrvpar instead of vcanDrv to initialize the driver you can change the start of the VME-A24 address ranges and the interrupt ranges. Note that you cannot map the card at an arbitrary VME-A24 address, see file “vcard.h” for further details. Note too that the VME-A16 address range cannot be changed without modifying the card (changing resistors) and modifying the driver’s source.

Card numbers

There are 4 possible card configurations, named 0 to 3 in this document. In a VME system each card must have a different configuration.

Interrupts

The VME-CAN4 card uses VME interrupt level 2. Here are the used interrupts:

configuration	interrupts used
0	112-119
1	120-127
2	128-135
3	136-141

VME Addresses

Depending on the configuration a card occupies different areas in VME address space.

Here are the used addresses in VME-A16 address space:

configuration	VME addresses used (hexadecimal)
0	E000 - E0FF
1	E100 - E1FF
2	E200 - E2FF
3	E300 - E3FF

Here are the used addresses in VME-A24 address space:

configuration	VME addresses used (hexadecimal)
0	800000 - 87FFFF
1	A00000 - A7FFFF
2	C00000 - C7FFFF
3	E00000 - E7FFFF