Used by the routines at 25420, 31338 and 63304. Places the address of the instruction following the CALL to this routine into bytes 8 and 9 of the character's buffer, thus making it the address of the character's primary command routine.
Input
H
Character number (215-229)
Output
63409
EX DE,HL
Collect the return address from the stack into DE
63410
EX (SP),HL
63411
EX DE,HL
63412
LD A,L
Save L in A briefly
63413
LD L,8
Copy the return address into bytes 8 and 9 of the character's buffer