Motorola M68CPU32BUG Manuel d'utilisateur Page 25

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DEBUG MONITOR COMMANDS
M68CPU32BUG/D REV 1 3-22
GN Go To Next Instruction GN
Use the GN command to trace through the subroutine call and display the results.
CPU32Bug>GN<CR>
Effective address: 00006008
Tempory breakpoint at $6004.
Effective address: 00006004 Current PC at $6000.
At Breakpoint
PC =00006008 SR =2700=TR:OFF_S_7_..... VBR =00000000
SFC =0=F0 DFC =0=F0 USP =00003830 SSP* =00010000
D0 =00000004 D1 =00000001 D2 =00000000 D3 =00000000
D4 =00000000 D5 =00000000 D6 =00000000 D7 =00000000
A0 =00000000 A1 =00000000 A2 =00000000 A3 =00000000
A4 =00000000 A5 =00000000 A6 =00000000 A7 =00010000
00006008 2600 MOVE.L D0,D3
CPU32Bug>
DEBUG MONITOR COMMANDS
M68CPU32BUG/D REV 1 3-19
GD Go Direct (Ignore Breakpoints) GD
3.10 GO DIRECT (IGNORE BREAKPOINTS)
GD [<addr>]
Use the GD command to start target code execution. If an address is specified, it is placed in the
target PC. Execution starts at the target PC address. Under the GD command no breakpoints are
inserted.
Once execution of target code begins, control is returned to CPU32Bug by various conditions:
Press the ABORT switch or RESET switch of the M68300PFB Platform Board
Execute the .RETURN TRAP #15 function
Generation of an unexpected exception
EXAMPLE The following program resides at $4000.
CPU32Bug>MD 4000;DI<CR>
00004000 2200 MOVE.L D0,D1
00004002 4282 CLR.L D2
00004004 D401 ADD.B D1,D2
00004006 E289 LSR.L #$1,D1
00004008 66FA BNE.B $4004
0000400A E20A LSR.B #$1,D2
0000400C 55C2 SCS.B D2
0000400E 60FE BRA.B $400E
CPU32Bug>RM D0<CR>
Initialize D0 and start target program:
D0 =00000000 ? 52A9C.<CR>
CPU32Bug>GD 4000<CR>
Effective address: 00004000
Fr
eescale S
emiconduct
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, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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