Motorola MVME172 manual Corresponding INT status bit. In level-sensitive mode

Models: MVME172

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Programming Model

IP_a, IP_b, IP_c, and IP_d; IRQ0 and IRQ1 Interrupt Control Registers

The registers which control IP_c and IP_d are not used on the 200/300-

Series MVME172.

ADR/SIZ

 

$FFFBC010 through $FFFBC017 (8 bits each)

4

BIT

7

6

5

4

3

2

1

0

NAME($10)

a0_PLTY

a0_E/L*

a0_INT

a0_IEN

a0_ICLR

a0_IL2

a0_IL1

a0_IL0

NAME($11)

a1_PLTY

a1_E/L*

a1_INT

a1_IEN

a1_ICLR

a1_IL2

a1_IL1

a1_IL0

NAME($12)

b0_PLTY

b0_E/L*

b0_INT

b0_IEN

b0_ICLR

b0_IL2

b0_IL1

b0_IL0

NAME($13)

b1_PLTY

b1_E/L*

b1_INT

b1_IEN

b1_ICLR

b1_IL2

b1_IL1

b1_IL0

NAME($14)

c0_PLTY

c0_E/L*

c0_INT

c0_IEN

c0_ICLR

c0_IL2

c0_IL1

c0_IL0

NAME($15)

c1_PLTY

c1_E/L*

c1_INT

c1_IEN

c1_ICLR

c1_IL2

c1_IL1

c1_IL0

NAME($16)

d0_PLTY

d0_E/L*

d0_INT

d0_IEN

d0_ICLR

d0_IL2

d0_IL1

d0_IL0

NAME($17)

d1_PLTY

d1_E/L* d1_INT

d1_IEN d1_ICLR

d1_IL2

d1_IL1

d1_IL0

OPER

R/W

R/W

R

R/W

C

R/W

R/W

R/W

RESET

0 R

0 R

0 R

0 R

0 R

0 R

0 R

0 R

 

IL2-IL0

These three bits select the interrupt level for the

 

 

 

corresponding IndustryPack interrupt request. Level 0

 

 

does not generate an interrupt.

 

 

 

 

ICLR

In edge-sensitive mode, writing a logic 1 to this bit clears

 

 

the corresponding INT status bit. In level-sensitive mode,

 

 

this bit has no function. It always reads as 0.

 

IEN

When IEN is set, the interrupt is enabled. When IEN is

 

cleared, the interrupt is disabled.

INT

When this bit is high, an interrupt is being generated for

 

the corresponding IndustryPack IRQ. The interrupt is at

 

the level programmed in IL2-IL0.

E/L*

When this bit is high, the interrupt is edge sensitive. When

 

the bit is low, the interrupt is level sensitive.

http://www.mcg.mot.com/literature

4-23

Page 259
Image 259
Motorola MVME172 manual Corresponding INT status bit. In level-sensitive mode, This bit has no function. It always reads as