2023-01-27 12:44:22 crc: i successed in half way, https://0x0.st/oFjZ.png

2023-01-27 12:45:02 in TOS==1 part, if (c <= 0) {printf(".");return;}

2023-01-27 12:45:44 i am trying to handle exit(0) with return but it stills consuming data as i see

2023-01-27 12:58:35 yay, i solved, https://0x0.st/oFju.png

2023-01-27 13:15:26 I think if returning rather than an exit, something needs to be pushed to the stack (as this is expected to return a character code). In the couple of instances I've not used a keyboard, I had it return 32 (ASCII space) if nothing was in my input backlog.

2023-01-27 14:51:47 inst_ii is the last instruction?

2023-01-27 16:55:25 yes