Motorola MVME1X7P manual VIRQ1 Level, VIRQ2 Level, Vbr

Models: MVME1X7P

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LCSR Programming Model

Interrupt Level Register 4 (bits 0-7)

 

ADR/SIZ

 

 

 

$FFF40084 (8 bits [6 used] of 32)

 

 

BIT

7

6

 

5

4

3

2

 

1

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NAME

 

 

 

VIRQ2

 

 

 

VIRQ1 LEVEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OPER

 

 

 

R/W

 

 

 

 

R/W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RESET

 

 

 

0 PSL

 

 

 

 

0 PSL

 

 

 

 

 

 

 

 

 

 

 

 

 

This register is used to define the level of the VMEbus level 1 (IRQ1)

 

 

interrupt and the VMEbus level 2 (IRQ2) interrupt. The IRQ1 and IRQ2

 

 

interrupts may be mapped to any local bus interrupt level.

 

 

 

VIRQ1 LEVEL

 

 

 

 

 

 

 

 

 

 

 

These bits define the level of the VMEbus IRQ1 interrupt.

 

 

VIRQ2 LEVEL

 

 

 

 

 

 

 

 

 

 

 

These bits define the level of the VMEbus IRQ2 interrupt.

Vector Base Register

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ADR/SIZ

 

 

 

$FFF40088 (8 bits of 32)

 

 

 

 

 

BIT

31

30

 

29

28

27

26

 

25

 

24

 

NAME

 

 

VBR 0

 

 

 

VBR 1

 

 

 

 

 

 

 

 

 

 

 

 

OPER

 

 

R/W

 

 

 

R/W

 

 

 

 

 

 

 

 

 

 

 

 

RESET

 

 

0 PSL

 

 

 

0 PSL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

This register is used to define the interrupt base vectors.

VBR 1

These bits define the interrupt base vector 1.

VBR 0

These bits define the interrupt base vector 0.

Note

Refer to Table 2-4,Local Bus Interrupter Summary, for

 

further information.

 

A suggested setting for the VMEchip2 Vector Base register

 

is: VBR0 = 6, VBR1 = 7 (i.e., setting the Vector Base register

 

at address $FFF40088 to $67xxxxxx). This produces a

 

Vector Base0 of $60 corresponding to the “X” in Table 2-4,

 

and a Vector Base1 of $70 corresponding to the “Y” in Table

 

2-4.

2

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Page 185
Image 185
Motorola MVME1X7P manual VIRQ1 Level, VIRQ2 Level, Vbr