Routines
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6FA0: 'A' pressed - down
 The address of this routine is found in the table of keypress handling routines at E550. It is called from the main loop at F6EA when 'A' or '6' is pressed. 6FA0 CALL \$6E50 Check whether ERIC is on a staircase 6FA3 LD L,\$00 Point HL at byte 0x00 of ERIC's buffer 6FA5 JR C,\$6FEA Jump if ERIC's on a staircase 6FA7 BIT 7,(HL) Check the 'direction' bit of ERIC's animatory state 6FA9 LD A,D A=ERIC's y-coordinate 6FAA JR Z,\$6FD1 Jump if ERIC is facing left 6FAC CP \$03 Is ERIC on the top floor? 6FAE JR Z,\$6FC8 Jump if so 6FB0 CP \$0A Is ERIC on the middle floor? 6FB2 JR Z,\$6FC3 Jump if so 6FB4 CP \$0E Is ERIC on the assembly hall stage? 6FB6 JP NZ,\$6F21 Move ERIC one space to the right if not 6FB9 LD A,E A=ERIC's x-coordinate 6FBA CP \$50 This is the x-coordinate of the top of the stairs leading from the stage to the bottom floor 6FBC JR NZ,\$6FB6 Jump if ERIC is not here This entry point is used by the routines at 6E9B, 6F14 and 6F2C. 6FBE LD B,D B=ERIC's post-midstride y-coordinate (down a stair) 6FBF INC B 6FC0 JP \$6F64 Move ERIC one space right or left too ERIC is on the middle floor, facing right. 6FC3 LD A,E A=ERIC's x-coordinate 6FC4 CP \$0F This is the x-coordinate of the top of the stairs leading down to the bottom floor at the far left of the boy's skool 6FC6 JR \$6FBC Move ERIC down a stair if he's here ERIC is on the top floor, facing right. 6FC8 LD A,E A=ERIC's x-coordinate 6FC9 CP \$54 This is the x-coordinate of the top of the stairs just outside the head's study 6FCB JR Z,\$6FBE Move ERIC down a stair if he's here 6FCD CP \$B3 This is the x-coordinate of the top of the stairs leading down to the middle floor in the girls' skool 6FCF JR \$6FBC Move ERIC down a stair if he's here ERIC is facing left. 6FD1 CP \$0A Is ERIC on the middle floor? 6FD3 JR Z,\$6FE1 Jump if so 6FD5 CP \$03 Is ERIC on the top floor? 6FD7 JP NZ,\$6F39 Move ERIC one space left if not 6FDA LD A,E A=ERIC's x-coordinate 6FDB CP \$1A This is the x-coordinate of the top of the stairs leading down from the Revision Library 6FDD JR NZ,\$6FD7 Move ERIC one space left if he's not here 6FDF JR \$6FBE Otherwise move him down a stair ERIC is on the middle floor, facing left. 6FE1 LD A,E A=ERIC's x-coordinate 6FE2 CP \$55 This is the x-coordinate of the top of the stairs leading down to the stage 6FE4 JR Z,\$6FBE Move ERIC down a stair if he's here 6FE6 CP \$B7 This is the x-coordinate of the top of the stairs leading down to the bottom floor in the girls' skool 6FE8 JR \$6FDD Move ERIC down a stair if he's here ERIC is on a staircase. 6FEA XOR (HL) Reset the carry flag if ERIC is facing the wrong way to descend the stairs 6FEB RLA 6FEC JP NC,\$6E38 Turn ERIC round if he's facing the wrong way 6FEF JR \$6FBE Otherwise move him down a stair
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