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newRPL: [UPDATED April 27-2017] Firmware for testing available for download
06-24-2016, 02:31 PM
Post: #314
RE: newRPL: [UPDATED June-22-16] Firmware for testing available for download
(06-24-2016 01:54 PM)Claudio L. Wrote:  First test:

Turn calculator on and measure current consumption (A)
A is 42.3 mA for me. (Actually, the first time I apply power from the lab power supply the calculator turns on and draws a current of just over 80 mA. Turning the calculator off and on from the keyboard causes the current to drop to 42.3 mA.)
Quote:Run this program, then measure current (B).

<< #05600014h 0 POKE >>
No change: B = A.
Quote:Now run this other program, then measure current (C).

<< #05600014h 4 POKE >>
A brief increase in current of between 3 to 4 mA; current quickly falls back to previous value. The multimeter I'm using takes about 2 readings per second, so I can't give you an exact value for the maximum value of this current pulse.
Quote:This is a fun port to play with:

<< 1 1000 START #05600014H DUP PEEK 4 BXOR POKE NEXT >>

Let me know the current values.
This made a musical buzzing sound; the current rose to about 46 mA while the program was running, and then it returned to its original value.

I suspect this information is mostly negative, but perhaps it will help to rule out a possible cause of the problem.

Nigel (UK)
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RE: newRPL: [UPDATED June-22-16] Firmware for testing available for download - Nigel (UK) - 06-24-2016 02:31 PM

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