Title : Ninja

Publisher : Entertainment USA

Release Year: 1987

No. Players: 1

Entry Type: Arcade: Solo beat-em-up

Machine Type: ZX-Spectrum 48K

Availability: Available

  • Cursor
  • Interface 2 (right)
  • Kempston
  • Redefinable Keys

Updated On : May 25, 2020

Roles :
Known Errors: Bugfix provided by Bandit:#
  • Certain memory areas are overwritten due to interrupts activated at the wrong time. Because of this, the location of an idol is always lost (thus making the game unfinishable) and the game may also crash randomly. The following patch fixes this problem:#
    org $e2ca^call $ff99      ; POKE 58059,153: POKE 58060,255^^org $f908^call $ff99      ; POKE 63753,153: POKE 63754,255^^org $ff99^ld iy,$5c3a     ; POKE 65433,253: POKE 65434,33: POKE 65435,58: POKE 65436,92^call $03b5      ; POKE 65437,205: POKE 65438,181: POKE 65439,3^di              ; POKE 65440,243^ret             ; POKE 65441,201
  • Enemies on screen are stored in a data table starting at address $e470, using 15 bytes per enemy, for a maximum of 5 enemies. However the current room number is stored at address $e4ba, which corresponds to the last byte of this table. If there are 5 enemies on screen (which is more likely to happen at the last room), the current room number is replaced with data about the 5th enemy. When it happens, the screen gets corrupted and the player reappears at another room. This problem is solved storing the current room number at address $e4bb instead. The following patch fixes this problem:#
    org $eabd^defb $bb        ; POKE 60093,187^org $eae7^defb $bb        ; POKE 60135,187^org $eafc^defb $bb        ; POKE 60156,187^org $eb3a^defb $bb        ; POKE 60218,187^org $ed08^defb $bb        ; POKE 60680,187^org $ed69^defb $bb        ; POKE 60777,187^org $ed71^defb $bb        ; POKE 60785,187^org $f108^defb $bb        ; POKE 61704,187^org $f59b^defb $bb        ; POKE 62875,187^org $f76f^defb $bb        ; POKE 63343,187^org $f806^defb $bb        ; POKE 63494,187^org $f818^defb $bb        ; POKE 63512,187^org $fa28^defb $bb        ; POKE 64040,187^org $fa40^defb $bb        ; POKE 64064,187^org $faf4^defb $bb        ; POKE 64244,187^org $fb2c^defb $bb        ; POKE 64300,187^org $fb3e^defb $bb        ; POKE 64318,187^org $fb44^defb $bb        ; POKE 64324,187^org $fb5a^defb $bb        ; POKE 64346,187^org $fd78^defb $bb        ; POKE 64888,187^org $fdcd^defb $bb        ; POKE 64973,187^org $fddd^defb $bb        ; POKE 64989,187
#Modified "BUGFIX" file provided by Einar Saukas.