Mac Rom Debugger (was: Re: Apple II for into to microprocessors)

From: Jeff Hellige <jhellige_at_earthlink.net>
Date: Sat Jul 14 12:38:26 2001

>MicroBug was first introduced with the Mac Plus and has been a standard
>component in the ROM of all Mac OS computers since then. MicroBug is invoked
>when the system takes a Non-Maskable Interrupt (NMI) and there is no other
>debugger (e.g., MacsBug) installed.

        What debugger did the 128k have in it then? It shipped with
a small switch that pressed both a recessed reset switch and a
programmers switch. The switches were accessed through the side
ventilation slots.

        Jeff
-- 
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                      Home of the TRS-80 Model 2000 FAQ File
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Received on Sat Jul 14 2001 - 12:38:26 BST

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