_Multiply: ; 37d41 (d:7d41) ld a, $8 ld b, a xor a ld [H_PRODUCT], a ld [H_MULTIPLYBUFFER], a ld [H_MULTIPLYBUFFER+1], a ld [H_MULTIPLYBUFFER+2], a ld [H_MULTIPLYBUFFER+3], a .loop ld a, [H_MULTIPLIER] srl a ld [H_MULTIPLIER], a ; (aliases: H_DIVISOR, H_MULTIPLIER, H_POWEROFTEN) jr nc, .smallMultiplier ld a, [H_MULTIPLYBUFFER+3] ld c, a ld a, [H_MULTIPLICAND+2] add c ld [H_MULTIPLYBUFFER+3], a ld a, [H_MULTIPLYBUFFER+2] ld c, a ld a, [H_MULTIPLICAND+1] adc c ld [H_MULTIPLYBUFFER+2], a ld a, [H_MULTIPLYBUFFER+1] ld c, a ld a, [H_MULTIPLICAND] ; (aliases: H_MULTIPLICAND) adc c ld [H_MULTIPLYBUFFER+1], a ld a, [H_MULTIPLYBUFFER] ld c, a ld a, [H_PRODUCT] ; (aliases: H_PRODUCT, H_PASTLEADINGZEROES, H_QUOTIENT) adc c ld [H_MULTIPLYBUFFER], a .smallMultiplier dec b jr z, .done ld a, [H_MULTIPLICAND+2] sla a ld [H_MULTIPLICAND+2], a ld a, [H_MULTIPLICAND+1] rl a ld [H_MULTIPLICAND+1], a ld a, [H_MULTIPLICAND] rl a ld [H_MULTIPLICAND], a ld a, [H_PRODUCT] rl a ld [H_PRODUCT], a jr .loop .done ld a, [H_MULTIPLYBUFFER+3] ld [H_PRODUCT+3], a ld a, [H_MULTIPLYBUFFER+2] ld [H_PRODUCT+2], a ld a, [H_MULTIPLYBUFFER+1] ld [H_PRODUCT+1], a ld a, [H_MULTIPLYBUFFER] ld [H_PRODUCT], a ret _Divide: ; 37da5 (d:7da5) xor a ld [H_DIVIDEBUFFER], a ld [H_DIVIDEBUFFER+1], a ld [H_DIVIDEBUFFER+2], a ld [H_DIVIDEBUFFER+3], a ld [H_DIVIDEBUFFER+4], a ld a, $9 ld e, a .asm_37db3 ld a, [H_DIVIDEBUFFER] ld c, a ld a, [H_DIVIDEND+1] ; (aliases: H_MULTIPLICAND) sub c ld d, a ld a, [H_DIVISOR] ; (aliases: H_DIVISOR, H_MULTIPLIER, H_POWEROFTEN) ld c, a ld a, [H_DIVIDEND] ; (aliases: H_PRODUCT, H_PASTLEADINGZEROES, H_QUOTIENT) sbc c jr c, .asm_37dce ld [H_DIVIDEND], a ; (aliases: H_PRODUCT, H_PASTLEADINGZEROES, H_QUOTIENT) ld a, d ld [H_DIVIDEND+1], a ; (aliases: H_MULTIPLICAND) ld a, [H_DIVIDEBUFFER+4] inc a ld [H_DIVIDEBUFFER+4], a jr .asm_37db3 .asm_37dce ld a, b cp $1 jr z, .asm_37e18 ld a, [H_DIVIDEBUFFER+4] sla a ld [H_DIVIDEBUFFER+4], a ld a, [H_DIVIDEBUFFER+3] rl a ld [H_DIVIDEBUFFER+3], a ld a, [H_DIVIDEBUFFER+2] rl a ld [H_DIVIDEBUFFER+2], a ld a, [H_DIVIDEBUFFER+1] rl a ld [H_DIVIDEBUFFER+1], a dec e jr nz, .asm_37e04 ld a, $8 ld e, a ld a, [H_DIVIDEBUFFER] ld [H_DIVISOR], a ; (aliases: H_DIVISOR, H_MULTIPLIER, H_POWEROFTEN) xor a ld [H_DIVIDEBUFFER], a ld a, [H_DIVIDEND+1] ; (aliases: H_MULTIPLICAND) ld [H_DIVIDEND], a ; (aliases: H_PRODUCT, H_PASTLEADINGZEROES, H_QUOTIENT) ld a, [H_DIVIDEND+2] ld [H_DIVIDEND+1], a ; (aliases: H_MULTIPLICAND) ld a, [H_DIVIDEND+3] ld [H_DIVIDEND+2], a .asm_37e04 ld a, e cp $1 jr nz, .asm_37e0a dec b .asm_37e0a ld a, [H_DIVISOR] ; (aliases: H_DIVISOR, H_MULTIPLIER, H_POWEROFTEN) srl a ld [H_DIVISOR], a ; (aliases: H_DIVISOR, H_MULTIPLIER, H_POWEROFTEN) ld a, [H_DIVIDEBUFFER] rr a ld [H_DIVIDEBUFFER], a jr .asm_37db3 .asm_37e18 ld a, [H_DIVIDEND+1] ; (aliases: H_MULTIPLICAND) ld [H_REMAINDER], a ; (aliases: H_DIVISOR, H_MULTIPLIER, H_POWEROFTEN) ld a, [H_DIVIDEBUFFER+4] ld [H_QUOTIENT+3], a ld a, [H_DIVIDEBUFFER+3] ld [H_QUOTIENT+2], a ld a, [H_DIVIDEBUFFER+2] ld [H_QUOTIENT+1], a ; (aliases: H_MULTIPLICAND) ld a, [H_DIVIDEBUFFER+1] ld [H_DIVIDEND], a ; (aliases: H_PRODUCT, H_PASTLEADINGZEROES, H_QUOTIENT) ret