[NES] AV Kyūkyoku Mahjong 2 green screen

[randomsomeone69-real]

Describe the issue
The game shows a green screen.

Rom Information
This game is unlicenced.

game
  sha256: cb990e44cbd4b731e211121faf5f040c42f3da8b7942957c90316afabab2d621
  name:   ＡＶ究極麻雀２
  title:  ＡＶ究極麻雀２
  region: NTSC-J, NTSC-U, PAL
  system: Regular
  board:  HVC-NROM-256
    mirror mode=horizontal
    memory
      type: ROM
      size: 0x10
      content: iNES
      data: 4e 45 53 1a 08 10 30 70 00 00 00 00 00 00 00 00
    memory
      type: ROM
      size: 0x20000
      content: Program
    memory
      type: ROM
      size: 0x20000
      content: Character