Skool Daze: Routine at 63749

63749: Collect the identifier for the next lesson

Used by the routine at 26342. Returns with A holding the identifier (224-255) for the next lesson. If the next lesson is PLAYTIME, one of the 'special' PLAYTIMEs (243, 244 or 245) may be chosen in place of the main timetable entry.

Input
E	Lesson number (0-63)

63749

LD D,254

Pick up the lesson identifier (224-255) from the main timetable

63751

LD A,(DE)

63752

CP 243

Is it PLAYTIME (243-255)?

63754

RET C

Return if not

63755

LD A,(32746)

32746 holds the game mode indicator

63758

AND A

Set the zero flag if we're in demo mode

63759

LD A,(DE)

Restore the lesson identifier to A and return if we're in demo mode

63760

RET Z

63761

CALL 24993

A=random number

63764

JP 28211

Select a 'special' PLAYTIME occasionally