XO 1.75 hangs on countdown

James Cameron quozl at laptop.org
Mon Mar 18 20:59:22 EDT 2013

A hang at the number "10" means that Open Firmware did not continue
past the point of setting up the page (section) table and turning on
the MMU and caches.

is where the "10" is shown.  The "11" is just beyond, a few lines

My guesses are:

- faulty memory,

- faulty processor,

- fault in wiring between processor and memory,

- incorrect firmware version for the memory, (some memory required a
  specific version),

- corrupt SPI FLASH.

Have you any further history on this laptop?

James Cameron

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