
Data Device Corporation
62743_pre7_noSA-DB.DOC
www.ddc-web.com
8-07-02
30
TABLE 42
. INTERRUPT MASK REGISTER #2
(RD/WR 1Dh, PCI 74h)
BIT
DESCRIPTION
15 (MSB)
NOT USED
14
BC OP CODE PARITY ERROR
13
ILLEGAL COMMAND
12
GENERAL PURPOSE QUEUE/INTERRUPT STATUS QUEUE
ROLLOVER
11
CALL STACK POINTER REGISTER ERROR
10
BC TRAP OP CODE
9
RT COMMAND STACK 50% ROLLOVER
8
RT CIRCULAR BUFFER 50% ROLLOVER
7
MONITOR COMMAND STACK 50% ROLLOVER
6
MONITOR DATA STACK 50% ROLLOVER
5
ENHANCED BC IRQ3
4
ENHANCED BC IRQ2
3
ENHANCED BC IRQ1
2
ENHANCED BC IRQ0
1
BIT TEST COMPLETE
0 (LSB)
NOT USED
TABLE 43
. INTERRUPT STATUS REGISTER #2
(RD 1Eh, PCI 78h)
BIT
DESCRIPTION
15 (MSB)
MASTER INTERRUPT
14
BC OP CODE PARITY ERROR
13
ILLEGAL COMMAND
12
GENERAL PURPOSE QUEUE/INTERRUPT STATUS QUEUE
ROLLOVER
11
CALL STACK POINTER REGISTER ERROR
10
BC TRAP OP CODE
9
RT COMMAND STACK 50% ROLLOVER
8
RT CIRCULAR BUFFER 50% ROLLOVER
7
MONITOR COMMAND STACK 50% ROLLOVER
6
MONITOR DATA STACK 50% ROLLOVER
5
ENHANCED BC IRQ3
4
ENHANCED BC IRQ2
3
ENHANCED BC IRQ1
2
ENHANCED BC IRQ0
1
BIT TEST COMPLETE
0 (LSB)
INTERRUPT CHAIN BIT