I was writing some opcodes on-calc since I was bored, and after I executed
the screen turned off. I turned it back on, and due to the title (theta) of the program, I went to the bottom of the program list in EXEC, pressed right, and the cursor disappeared.
I pressed enter anyway, and it turned off.
Nothing weird yet.
I popped a battery and turned it on, and the RAM clear screen pooped up.
It was different.
Instead of saying "RAM cleared", it said "Mem Cleared", and the next line read "for Singapore".
despite my repeated (foolhardy) attempts, I was unable to recreate this. My boot code is 1.02 and my base code is 2.43. The hardware revision of my calculator is M.