| Routines

54F2: Prepare addresses 5D00 to 5FFF

Used by the routine at 81B4. Copies 256 bytes from eight 32-byte segments. The routine is called three times with the values in DE and HL shown below. The 24 32-byte segments are used later on as character buffers.
Input
DE | 5D00, 5E00 or 5F00
H | 0xBF, 0xC7 or 0xCF
L | 0x00
54F2 | LD A,$08 | There are 8 chunks of 32 bytes to copy
54F4 | LD BC,$0020 | Copy 32 bytes
54F7 | LDIR
54F9 | INC H | Point HL at the next chunk of 32 bytes to copy
54FA | LD L,B
54FB | DEC A | Next chunk
54FC | JR NZ,$54F4 | Jump back until all 8 chunks have been copied
54FE | RET |