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Debugger General Information
B
177Bug>
R0 =00000000 00000000?
177Bug>
00000+R0 48E78080
00004+R0 4280
00006+R0 1018
00008+R0 5340
0000A+R0 12D8
0000C+R0 51C8FFFC
00010+R0 4CDF0101
00014+R0 4E75
177Bug>
Port Numbers
B-34
OF R0
1327C.
MD 0+R0;DI
CR
<
For additional information about the offset registers, refer to the
Debugging Package for Motorola 68K CISC CPUs User's Manual.
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:
Ð Downloading
Ð Uploading
Ð Concurrent mode
Ð Transparent 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.
CR
<
>
>
MOVEM.L
CLR.L
MOVE.B
SUBQ.W
MOVE.B
DBF
MOVEM.L
RTS
D0/A0,—(A7)
D0
(A0)+,D0
#1,D0
(A0)+,(A1)+
D0,$A+R0
(A7)+,D0/A0
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