Motorola MVME1X7P - Manual (Page 239)

Programming Model
http://www.motorola.com/computer/literature 3-41
3
Printer SEL Interrupt Control Register
IL2-IL0 These three bits select the interrupt level for the printer
SEL. Level 0 does not generate an interrupt.
ICLR In edge-sensitive mode, writing a logic 1 to this bit clears
the INT status bit. This bit has no function in level-
sensitive mode. This bit is always read as zero.
IEN When this bit is high, the interrupt is enabled. The
interrupt is disabled when this bit is low.
INT When this bit is high, a printer SEL interrupt is being
generated at the level programmed in IL2-IL0 (if
nonzero).
E/L* When this bit is high, the interrupt is edge-sensitive. The
interrupt is level-sensitive when this bit is low.
PLTY When this bit is low, interrupt is activated by a rising
edge/high level of the SEL pin.
When this bit is high, interrupt is activated by a falling
edge/low level of the SEL pin.
Note that if this bit is changed while the E/L* bit is set (or
is being set), a SEL interrupt may be generated. This can
be avoided by setting the ICLR bit during write cycles that
change the E/L* bit.
ADR/SIZ $FFF42032 (8 bits)
BIT 15 14 13 12 11 10 9 8
NAME PLTY E/L* INT IEN ICLR IL2 IL1 IL0
OPER R/W R/W R R/W C R/W R/W R/W
RESET 0 PL 0 PL 0 PL 0 PL 0 PL 0 PL 0 PL 0 PL