Motorola MVME187 User Manual

Preparing the Hardware

3-9

Bit #0 (GPI0)

1-2

When this bit is a one (high), it instructs the debugger to use 
local Static RAM for its work page (i.e., variables, stack, vector 
tables, etc.). This bit will be high when jumper is removed.

Bit #1 (GPI1)

3-4

When this bit is a one (high), it instructs the debugger to use 
the default setup/operation parameters in ROM versus the 
user setup/operation parameters in NVRAM. This is the same 
as depressing the 

RESET

 and 

ABORT

 switches at the same 

time. This feature can be used in the event the user setup is 
corrupted or does not meet a sanity check. Refer to the ENV 
command (Appendix A) for the ROM defaults. This bit will be 
high when jumper is removed.

Bit #2 (GPI2)

5-6

Reserved for future use.

Bit #3 (GPI3)

7-8

Reserved for future use.

Bit #4 (GPI4)

9-10

Open to your application.

Bit #5 (GPI5)

11-12

Open to your application.

Bit #6 (GPI6)

13-14

Open to your application.

Bit #7 (GPI7)

15-16

Open to your application.

General 

purpose

 software 

readable

 jumpers

GPI0 - GPI3:

Reserved

GPI4 - GPI7:

User-deÞnable

(Factory 

conÞguration)

15

GPI0

GPI1

GPI2

GPI6

GPI3

GPI4

GPI5

1

2

16

GPI7

7

8