B

Debugger General Information

177Bug>OF R0

R0 =00000000 00000000? 1327C. <CR> 177Bug>MD 0+R0;DI <CR>

00000+R0

48E78080

MOVEM.L

D0/A0,—(A7)

00004+R0

4280

CLR.L

D0

00006+R0

1018

MOVE.B

(A0)+,D0

00008+R0

5340

SUBQ.W

#1,D0

0000A+R0 12D8

MOVE.B

(A0)+,(A1)+

0000C+R0 51C8FFFC

DBF

D0,$A+R0

00010+R0

4CDF0101

MOVEM.L

(A7)+,D0/A0

00014+R0

4E75

RTS

 

177Bug>

 

 

 

For additional information about the offset registers, refer to the Debugging Package for Motorola 68K CISC CPUs User's Manual.

Port Numbers

Some 177Bug commands allow you the option of choosing the port to be used to input or output. Valid port numbers which may be used for these commands are as follows:

1.MVME177 EIA-232-D Debug (Terminal Port 0 or 00) (PORT 1 on the MVME177 P2 connector). Sometimes known as the Òconsole portÓ, it is used for interactive user input/output by default.

2.MVME177 EIA-232-D (Terminal Port 1 or 01) (PORT 2 on the MVME177 P2 connector). Sometimes known as the Òhost portÓ, this is the default for:

ÐDownloading

ÐUploading

ÐConcurrent mode

ÐTransparent modes.

Note These logical port numbers (0 and 1) are shown in the pinouts of the MVME177 module as ÒSERIAL PORT 1" and ÒSERIAL PORT 2", respectively. Physically, they are all part of connector P2.

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Image 114
Motorola MVME177 manual Port Numbers