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HP 35 ROM fault?
11-21-2016, 10:52 PM
Post: #1
HP 35 ROM fault?
I have replaced the faulty anode driver and now have a mostly working early HP 35 with split battery compartment and 2.02 bug.
Mostly working because sin, cos, arc sin and arc cos don't work. Everything else, even tan, works. Excecuting the non working functions results in a blank display and a crashed calculator, so I suspect a bad ROM. Would anybody know which instructions are only use by those four functions and which of the three ROMs that would reside in?

Cheers,
Harald
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Messages In This Thread
HP 35 ROM fault? - Harald - 11-21-2016 10:52 PM
RE: HP 35 ROM fault? - teenix - 11-22-2016, 12:20 AM
RE: HP 35 ROM fault? - PANAMATIK - 11-22-2016, 02:20 AM



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