Routines
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F05D: Make a teacher tell the class what to do
Used by the routine at F100. Makes the teacher choose between messages 0x59, 0x5A and 0x5B (in a lesson without ERIC and EINSTEIN, or a lesson with no question-and-answer session).
Input
H Teacher's character number (0xC9-0xCC)
F05D CALL $6291 A=random number
F060 CP $F0 Set the carry flag if A<0xF0, and set the zero flag if A<0x80
F062 BIT 7,A
F064 LD E,$5B
F066 JR NC,$F06C Jump if it's essay time (A>=0xF0)
F068 JR Z,$F06B Jump if it's book-reading time (A<0x80)
F06A DEC E It's revision time (0x80<=A<0xF0)
F06B DEC E
Now E holds the appropriate message number:
E Message
0x59 START REVISING FOR YOUR EXAMS
0x5A START READING AT THE NEXT CHAPTER IN YOUR BOOKS
0x5B WRITE AN ESSAY TITLED 'WHY I LOVE SCHOOL'
F06C LD BC,$6A08 Redirect control to the routine at 6A08 (make character speak), then return control to the calling routine
F06F JP $639F
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