New firmware for the Swissmicros DM15L

[Johnp_g]

(09-30-2024 01:42 PM)Johnp_g Wrote:  ISG/DSE

I spoke too soon!

There's a bug with the "Loop Control" for DSE/ISG.

Simple Test prog

Code:


LBL A 
PSE
RCL I
DSE I
GTO A
RTN

I wanted to test my understanding of the different parts of the Loop Control number.

I found, though, that there's a bug in the handling of Loop Control.

Storing 10.00001 in I and running the prog with fA shows a count down from 10 in steps of 1.

Starting with 10.00002 in I and running fA also counts down in steps of 1, when it should be steps of 2.

Starting with the following different numbers in I and running the prog.

10.00003 counts down correctly in steps of 3
10.00004 counts down correctly in steps of 4

etc.

However I found 50.00006 counts down incorrectly from 50 in steps of 5 (not 6 per the control number)

looking closer...

30.00006 counts down in 6's
31.00006 counts down in 6's

but

32.00006 counts down in 5's
33.00006 counts down in 5's

etc...

There may be other errors in step size and decrement (and possibly with ISG too?) but I haven't checked every combination of starting number and increment value.

Perhaps this is enough to work with to find the bug?

John