Routines
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28484: 'Q' pressed - up
 The address of this routine is found in the table of keypress handling routines at 58704. It is called from the main loop at 63210 when 'Q' or '7' is pressed. 28484 CALL 28240 Check whether ERIC is on a staircase 28487 LD L,0 Point HL at byte 0 of ERIC's buffer 28489 JR C,28569 Jump if ERIC's on a staircase 28491 BIT 7,(HL) Check the 'direction' bit of ERIC's animatory state 28493 LD A,D A=ERIC's y-coordinate 28494 JR Z,28540 Jump if ERIC's facing left 28496 CP 10 Is ERIC on the middle floor? 28498 JR Z,28535 Jump if so 28500 CP 14 Is ERIC on the assembly hall stage? 28502 JR Z,28530 Jump if so 28504 CP 17 Is ERIC on the bottom floor? 28506 JP NZ,28449 Move ERIC one space to the right if not 28509 LD A,E A=ERIC's x-coordinate 28510 CP 176 This is the x-coordinate of the bottom of the stairs leading up to the middle floor of the girls' skool 28512 JR NZ,28506 Jump if ERIC is not at that point This entry point is used by the routines at 28315, 28436 and 28460. 28514 DEC D Up a stair 28515 LD B,D B=ERIC's post-midstride y-coordinate This entry point is used by the routine at 28576. 28516 LD A,(53760) A=ERIC's animatory state 28519 LD C,E C=ERIC's current x-coordinate 28520 BIT 7,A Is ERIC facing left? 28522 JR Z,28526 Jump if so 28524 INC C 28525 INC C 28526 DEC C C=ERIC's post-midstride x-coordinate 28527 JP 28114 Put ERIC midstride ERIC is on the assembly hall stage, facing right. 28530 LD A,E A=ERIC's x-coordinate 28531 CP 81 This is the x-coordinate of the bottom of the stairs leading up from the stage to the middle floor 28533 JR 28512 Move ERIC up a stair if he's here ERIC is on the middle floor, facing right. 28535 LD A,E A=ERIC's x-coordinate 28536 CP 19 This is the x-coordinate of the bottom of the stairs leading up to the Revision Library 28538 JR 28512 Move ERIC up a stair if he's here ERIC is facing left. 28540 CP 10 Is ERIC on the middle floor? 28542 JR NZ,28556 Jump if not 28544 LD A,E A=ERIC's x-coordinate 28545 CP 91 This is the x-coordinate of the bottom of the stairs leading up to the head's study 28547 JR Z,28514 Move ERIC up a stair if he's here 28549 CP 186 This is the x-coordinate of the bottom of the stairs leading up to the top floor of the girls' skool 28551 JP NZ,28473 Move ERIC one space left if he's not here 28554 JR 28514 Otherwise move him up a stair 28556 CP 17 Is ERIC on the bottom floor? 28558 JR NZ,28551 Jump if not 28560 LD A,E A=ERIC's x-coordinate 28561 CP 22 This is the x-coordinate of the bottom of the stairs leading up to the middle floor at the far left of the boys' skool 28563 JR Z,28514 Move ERIC up a stair if he's here 28565 CP 83 This is the x-coordinate of the bottom of the stairs leading up to the assembly hall stage 28567 JR 28551 Move ERIC up a stair if he's here ERIC is on a staircase. 28569 XOR (HL) Set the carry flag if ERIC is facing the wrong way to ascend the stairs 28570 RLA 28571 JP C,28216 Turn ERIC round if he's facing the wrong way 28574 JR 28514 Make ERIC go up a stair otherwise
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