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JW

On Fri, 29 Jan 2010 13:01:13 GMT (jamma-plusser)
wrote in Message id: :

On Fri, 29 Jan 2010 07:04:22 -0500, JW wrote:

On Fri, 29 Jan 2010 11:59:52 GMT (jamma-plusser)
wrote in Message id: :

What's the best way to pause a 68000 CPU? I'm diagnosing an old game
PCB and want to pause the screen so I can concentrate on fixing a hard
to track down graphics error.

Pausing it would help immensely.

No doubt I'll also have to disable any watchdog otherwise it will just
reset.

Thanks

Drive the *HALT line to a logical 0.

Thanks - could I just Ground it? Or should I use a resistor?

You could try a 1K resistor without hurting anything.
Do you have a schematic of the circuitry in question? What does the *HALT
pin connect to?