Thanks for this, John.

(1) I think mine are bad learns because none of them works for the Cambridge CD player. I have tried several learning variations: original remote further away from the Pronto, press until beep, short press only, etc - to no avail.

(2) How did you get from A0 A0 to 160.160? If it was backward learning from Kupakai's code above, how did he arrive at this I wonder.

(3) I have used nec1.irp and device 160.160 and have used the last two numerals of the Cambridge code to select from the MakeHex file. Only the ON and OFF work, nothing else works.

(4) The original list from Cambridge Audio is:

System Code = A0 A0 (NEC Code)
Key Command Code hex Command Code dec
1 01 1
2 09 9
3 11 17
4 19 25
5 02 2
6 0A 10
7 12 18
8 1A 26
9 03 3
0 0B 11
1+ 13 19
Prog 1B 27
Play 15 21
Pause 1D 29
Stop 1C 28
Random 0E 14
Remain 0F 15
Skip left 04 4
Skip right 0C 12
Repeat 16 22
AB 17 23
<< 05 5
>> 0D 13
Intro 06 6
Space 1E 30
Open 07 7
Power toggle 44 68
Power On 46 70
Power Off 45 69
Bright toggle 47 71