[gpsim-devel] Internal RC calibration (OSCCAL) and bug 292

[<rr...@ih...>]

I seek a wider opinion on  bug  292 which I closed and have reopened
for more input .
Some processors such as the 12F675 are shipped with the last program
instruction (0x3ff on 12F675) with 0x34XX (retlw 0xXX) where XX is the
factory RC calibration correction. The data sheet provides an example
of "call 0x3ff; movwf OSCCAL" to set the RC oscillator calibration to
the factory value.Currently in gpsim the last instruction is the
default blank value of 0x3fff. When the above call is executed gpsim
steps the PC to 0x400 which causes  a memory violation which resets
the PC to 0 causing an infinite loop.

I originally closed the bug on the basis that doing a bulk erase prior
to loading the program  will clear the factory value. The programing
spec indicates you should read the value prior to erase and reload it
with the program. Thus I provided a way to do this in the test code. 
The creator of the bug countered that this should be the
responsibility of the programing tools rather than the program
developer.
So the question is should gpsim put a valid instruction, probably
0x3480, as default into this program address?