| Routines

F849: Scroll the display file right one column

Used by the routine at 61F8.
F849 | LD BC,$B82D | C=0x2D (DEC L), B=0xB8 (LDDR after 0xED)
F84C | LD DE,$401F | Initialise DE to the appropriate display file address
This entry point is used by the routine at F841 with C=0x2C (INC L), B=0xB0 (LDIR after 0xED), and DE=4000.
F84F | LD HL,$F822 | Set the instruction at F822 to INC L or DEC L, and the instruction at F826 to LDIR or LDDR
F852 | LD (HL),C
F853 | LD L,$27
F855 | LD (HL),B
F856 | JR $F818 | Scroll the display file one column left or right