HP-15C CE woes: 1 bug, 2 limitations, 3 questions

[Voldemar]

(08-09-2023 05:58 AM)ThomasF Wrote:  I tried some values as well and can confirm that any value that contains E or F in HEX mode fails in DEC mode.
But also decimal 60 and 61 (0x3C and 0x3D) and multiples of 80 after that, eg (60|61) + n*80 [n=0,1,....], so 60 and 61, 140 and 141 etc.
60 -> 5A (50 + 0xA = 50 + 10)
61 -> 5B (50 + 0xB = 50 + 11)
140 -> 13A (130 + 0xA = 130 + 10)
So definitely something to do with what was mentioned above.

Cheers,
Thomas

Interesting
DEC mode
60, 61 give on the screen no DEC numbers, same with 140, 141. These four numbers do not have E or F in HEX mode. Are there others like this?