Routines
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37876: Jump to input reading routine
Used by the routines at 27176, 37333, 37486 and 38749.
Output
A Stored key-press (bits: 0=LEFT, 1=RIGHT, 2=UP, 3=DOWN, 4=FIRE)
37876 LD HL,23485 Set stored keyboard / joystick action to zero...
37879 LD (HL),0 ...
The operand of the instruction at 37881 represents the address of the appropriate keyboard / joystick reading routine. This is modified by the instruction at 37857.
37881 JP 37884 Jump to keyboard / joystick reading routine
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