VXI SM7100 Interrupt Control Register 0x1C Read and Write, Subclass Register 0x1E Read Only

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Interrupt Control Register (0x1C) — Read and Write

D15	Scan Function done	0	= enabled
	mask bit	1	= disabled
D14	Openbus Active Event	0	= enabled
	true mask bit	1	= disabled
D13-D9	Unused	Data written to these bits has no effect
D8	Module Busy Complete	0	= enabled
		1	= disabled
D7	IR ENA*	0	= writing a 0 to this bit enables interrupter capabilities
		1	= writing a 1 to this bit disables interrupter capabilities
D6	IH ENA*	The module has no interrupt handler capability; therefore writing a 1 or
		0 has no effect. A 1 is always read back for this bit.
		The complement of the value programmed into these three bits reflects
D5-D3	Interrupter IRQ Line	the selected IRQ line used by the module. A value of 0112 would select
		IRQ4, a value of 0002 would select IRQ7, and a value of 1112 would
		disconnect the IRQ lines.
D2-D0	Handler IRQ Line	The module has no interrupt handler capability; therefore writing to
		these bits has no effect. A 1112 is always read back for these bits.
Note that all bits in this register are set to 1 upon receipt of a hard or soft reset.

	Subclass Register (0x1E) — Read Only
D15	VXIbus Extended	Always reads as 1.
	Device
D14-D0	Extended Memory	Always reads as 7FFD16
	Device

		NVM Access Resister (0x20) — Read Only
D15-D1	Unused		All Bits are always 1.
D0			Reads back the serial data stream from the selected SMIP II board.
			Note that only one SMIP II board may be read back at a time.

		NVM Access Resister (0x20) — Write Only
D15-D2	Unused		Data written to these bits have no effect.
D1			Serial clock for the switch module; should be a logic 1 when not used.
D0			Serial data input for the switch module; must be a logic 1 when not
			used.

Board X, Y Used Address Register (0x22, 0x24, 0x26) — Read and Write

D15-D8	Sets the actual number of words of address space used by the relays on
	board's X.
D7-D0	Sets the actual number of words of address space used by the relays on
	board's Y.

SM7100 Programming 25