🚀 go-pugleaf

I would not otherwise have posted this since I am not sure how
current it is, but the questioner said he and many other could get
on other reply.  These values may only apply to 128K ROM Macs.
If I recall correctly, there are new codes or extra
parameters for the newer Mac models.  Here's what I have, anyhow.

  Greg Dudek

This information was posted some time ago by
    Bob Hablutzel		BOB@NUACC.ACNS.NWU.EDU
> 
> 
> The Sad Mac error code is six digits long. The first two digits are the 
> class code, and tell what the problem is. The second four digits are usually
> meaningless except to repair people (they pinpoint suspected bad chips), but
> for class code 0F, the codes are important. See below.
> 
> The Sad Mac codes are:
> 
> 	01 nnnn 	ROM test failed.
> 	02 nnnn		Memory test (Bus sub-test) failed
> 	03 nnnn		Memory test (byte write) failed
> 	04 nnnn		Memory test (Mod3 test) failed
> 	05 nnnn		Memory test (Address uniqueness) failed
> 
> Class code 0F indicates failures after the self test at startup:
> 
> 	0F 0001		Bus error
> 	0F 0002		Address error
> 	0F 0003		Illegal instruction
> 	0F 0004		Zero divide
> 	0F 0005		Check instruction
> 	0F 0006		TrapV instruction
> 	0F 0007		Privilege violation
> 	0F 0008		Trace 
> 	0F 0009		Line 1010
> 	0F 000A		Line 1111
> 	0F 000B		Other exceptions
> 	0F 000D		NMI.
> 
> All of these codes, by the way, are reason to gnash one's teeth, and pull
> one's hair, EXCEPT 0F000D. This probably means that the programmer's switch
> is jammed. Unjamming this switch should improve things dramatically.
> 
> Good luck to all. Clip and save this posting. Thank you.
>