[Coco] CoCo DECB error list and descriptions

[William Astle]

As Art said, there's no such thing as an ?FE error in standard DECB.

It is, however, possible for a ML program to add additional errors if it 
wants to and that could be what happened here.

However, it's more likely an incorrect error code went into the AC46 
error handler. That routine expects an *even* number code in B. An odd 
number in B could give interesting results. In fact, the code 73 would 
cause "?FE" error to be shown since it would take the second character 
from "VF" and the first character from "ER", thus giving "FE". (Error 
number 36.5 in the reckoning used by ERNO if ERNO could handle 
fractional error codes.)

On 2018-02-13 07:23 PM, Lee wrote:
> Is there a list of DECB error codes ("?FE ERROR") and what they mean
> anywhere online?  I just got an "?FE ERROR" (EXEC'ing some ML code I was
> playing with from DECB) and can't find anything online explaining it (at
> least what "FE" might stand for).  Faulty Exec?  Frackin' Excited?
> Foobar'd Excellently? :)
> 
> Lee
> 
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