| Routines

B072: Get the LSB of the message address for a main character's name

Used by the routine at B0E8. Returns with the LSB in L.
Input
B | 1-8 (corresponding to one of the eight main characters)
B072 | LD A,$08 | C=8-B
B074 | SUB B
B075 | LD C,A
B076 | ADD A,A | A=8*(8-B)
B077 | ADD A,A
B078 | ADD A,A
B079 | SUB C | A=7*(8-B)
B07A | ADD A,A | A=14*(8-B)
B07B | ADD A,$80 | A=128+14*(8-B)
B07D | LD L,A | Place this LSB in L
B07E | RET |