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Interrupt Handling
3.4 Determining HD63143 Pins Which Triggered an Interrupt -
IRSUPL, IRSUPH
After the initiation of an EVENT it is necessary to find out by which pin it was triggerd, because it isn't
possible to determine an EVENT for each of the 48 UPP pins. These DATIONs show all pins of the
HD63143 which have changed since the last selection of this DATION.
Declaration:
SPC IRSUPL DATION INOUT BASIC GLOBAL;
SPC IRSUPH DATION INOUT BASIC GLOBAL;
Variable definition:
DCL (pin_l, pin_h) BIT(32);
Value ranges:
pin_l,
pin_h: Pins whose level has changed since the last selection.
$00000000...$000FFFFFF
Procedure calls:
16
e.g.: $00000010 -> pin 5
TAKE pin_l FROM IRSUPL
TAKE pin_h FROM IRSUPH
3.5 Setting the Board-Interrupt Level on the VMEbus - LEVDP1
Declaration:
SPC LEVDP1 ENTRY (FIXED) GLOBAL;
Variable definition:
DCL irlev FIXED;
Value ranges:
irlev : Interrupt release and interrupt level
0 ...interrupt locked
1...7 ...VMEbus-interrupt level
Procedure call:
CALL LEVDP1 (irlev)
VME DPIO32 Software Manual Rev. 2.1