Motorola USB08 Betriebsanleitung PDF herunterladen (Seite 22)

6.8.2 T/G, L/U and BR addresses

• T/G The T/G address show where Tracing and Running will next begin in the absence of

a specific address

• L/U The L/U address shows where Listing or Unassembling will begin in the absence of a

specific address

• BR The BR address shows the latest value written to the BRKH/L registers on the MCU.

Suppose a file to be loaded at $8000 and the following Trace command given:

T 8000

then tracing will commence at 8000 (hex), and when tracing stops at the next breakpoint, the value

of the T/G address will be updated to show the break point address. Simply pressing the <Enter> key

will then trace the next instruction. The L/U address also tracks the breakpoint, so if the program were

paused at a breakpoint, say $8003, then issuing the command:

would unassemble the next three instructions, altering L/U to the address immediately after the

operands of the third instruction, but leaving T/G unchanged, so that typing

would resume tracing where it was previously left off.

6.8.3 Start / Break Point

Displays breakpoint information. When running or tracing, the top line in this window shows the

instruction at the starting address in brackets and in green, followed by the currently set break point

(if any). If the MCU is halted at the break point, then that line is displayed in red type, followed by a

line showing where the program would go next if another trace command is given. If halted at a branch

instruction, two addresses will be displayed, the sequential one first and then the branch address.

Whichever is the current destination will be highlighted in bold.

6.8.4 Watch Window

Displays the value of selected memory locations during the running and tracing of programs. The items

in the watch window are automatically updated when a running or tracing program returns to monitor

mode.

Items in this display may be re-ordered by dragging and dropping.

A right-click context menu is available in this display, with the following items:

Refresh Click to read the current value(s) at the address(es) and update the display in the watch

window.

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Motorola USB08 Betriebsanleitung Seite 22