The two ROMs (int/jp) are using different character maps for storing username and comments:
| Address | Char in INT ROM | Char in JP ROM | Unicode representation |
|---|---|---|---|
| 0x01 | あ | 12354 | |
| 0x02 | い | 12356 | |
| 0x03 | う | 12358 | |
| 0x04 | え | 12360 | |
| 0x05 | お | 12362 | |
| 0x06 | か | 12363 | |
| 0x07 | き | 12365 | |
| 0x08 | く | 12367 | |
| 0x09 | け | 12369 | |
| 0x0a | こ | 12371 | |
| 0x0b | さ | 12373 | |
| 0x0c | し | 12375 | |
| 0x0d | す | 12377 | |
| 0x0e | せ | 12379 | |
| 0x0f | そ | 12381 | |
| 0x10 | た | 12383 | |
| 0x11 | ち | 12385 | |
| 0x12 | つ | 12388 | |
| 0x13 | て | 12390 | |
| 0x14 | と | 12392 | |
| 0x15 | な | 12394 | |
| 0x16 | に | 12395 | |
| 0x17 | ぬ | 12396 | |
| 0x18 | ね | 12397 | |
| 0x19 | の | 12398 | |
| 0x1a | は | 12399 | |
| 0x1b | ひ | 12402 | |
| 0x1c | ふ | 12405 | |
| 0x1d | へ | 12408 | |
| 0x1e | ほ | 12411 | |
| 0x1f | ま | 12414 | |
| 0x20 | み | 12415 | |
| 0x21 | む | 12416 | |
| 0x22 | め | 12417 | |
| 0x23 | も | 12418 | |
| 0x24 | や | 12420 | |
| 0x25 | ゆ | 12422 | |
| 0x26 | よ | 12424 | |
| 0x27 | 、 | 12289 | |
| 0x28 | 。 | 12290 | |
| 0x29 | ら | 12425 | |
| 0x2a | り | 12426 | |
| 0x2b | る | 12427 | |
| 0x2c | れ | 12428 | |
| 0x2d | ろ | 12429 | |
| 0x2e | わ | 12431 | |
| 0x2f | を | 12434 | |
| 0x30 | ん | 12435 | |
| 0x31 | 〜 | 12316 | |
| 0x32 | ♥ | ||
| 0x33 | が | 12364 | |
| 0x34 | ぎ | 12366 | |
| 0x35 | ぐ | 12368 | |
| 0x36 | げ | 12370 | |
| 0x37 | ご | 12372 | |
| 0x38 | ざ | 12374 | |
| 0x39 | じ | 12376 | |
| 0x3a | ず | 12378 | |
| 0x3b | ぜ | 12380 | |
| 0x3c | ぞ | 12382 | |
| 0x3d | だ | 12384 | |
| 0x3e | ぢ | 12386 | |
| 0x3f | づ | 12389 | |
| 0x40 | で | 12391 | |
| 0x41 | ど | 12393 | |
| 0x42 | ば | 12400 | |
| 0x43 | び | 12403 | |
| 0x44 | ぶ | 12406 | |
| 0x45 | べ | 12409 | |
| 0x46 | ぼ | 12412 | |
| 0x47 | ぱ | 12401 | |
| 0x48 | ぴ | 12404 | |
| 0x49 | ぷ | 12407 | |
| 0x4a | ぺ | 12410 | |
| 0x4b | ぽ | 12413 | |
| 0x4c | っ | 12387 | |
| 0x4d | ゃ | 12419 | |
| 0x4e | ゅ | 12421 | |
| 0x4f | ょ | 12423 | |
| 0x50 | ・ | 12539 | |
| 0x51 | ぁ | 12353 | |
| 0x52 | ぃ | 12355 | |
| 0x53 | ぅ | 12357 | |
| 0x54 | ぇ | 12359 | |
| 0x55 | ぉ | 12361 | |
| 0x56 | A | ア | 12450 |
| 0x57 | B | イ | 12452 |
| 0x58 | C | ウ | 12454 |
| 0x59 | D | エ | 12456 |
| 0x5a | E | オ | 12458 |
| 0x5b | F | カ | 12459 |
| 0x5c | G | キ | 12461 |
| 0x5d | H | ク | 12463 |
| 0x5e | I | ケ | 12465 |
| 0x5f | J | コ | 12467 |
| 0x60 | K | サ | 12469 |
| 0x61 | L | シ | 12471 |
| 0x62 | M | ス | 12473 |
| 0x63 | N | セ | 12475 |
| 0x64 | O | ソ | 12477 |
| 0x65 | P | タ | 12479 |
| 0x66 | Q | チ | 12481 |
| 0x67 | R | ツ | 12484 |
| 0x68 | S | テ | 12486 |
| 0x69 | T | ト | 12488 |
| 0x6a | U | ナ | 12490 |
| 0x6b | V | ニ | 12491 |
| 0x6c | W | ヌ | 12492 |
| 0x6d | X | ネ | 12493 |
| 0x6e | Y | ノ | 12494 |
| 0x6f | Z | ハ | 12495 |
| 0x70 | _ | ヒ | 12498 |
| 0x71 | ' | フ | 12501 |
| 0x72 | , | ヘ | 12504 |
| 0x73 | . | ホ | 12507 |
| 0x74 | Á | マ | 12510 |
| 0x75 | Â | ミ | 12511 |
| 0x76 | À | ム | 12512 |
| 0x77 | Ä | メ | 12513 |
| 0x78 | É | モ | 12514 |
| 0x79 | Ê | ヤ | 12516 |
| 0x7a | È | ユ | 12518 |
| 0x7b | Ë | ヨ | 12520 |
| 0x7c | Í | ! | |
| 0x7d | Ï | ? | |
| 0x7e | Ó | ラ | 12521 |
| 0x7f | Ö | リ | 12522 |
| 0x80 | Ú | ル | 12523 |
| 0x81 | Ü | レ | 12524 |
| 0x82 | Ñ | ロ | 12525 |
| 0x83 | - | ワ | 12527 |
| 0x84 | & | ヲ | 12530 |
| 0x85 | ! | ン | 12531 |
| 0x86 | ? | ヴ | 12532 |
| 0x87 | |||
| 0x88 | a | ガ | 12460 |
| 0x89 | b | ギ | 12462 |
| 0x8a | c | グ | 12464 |
| 0x8b | d | ゲ | 12466 |
| 0x8c | e | ゴ | 12468 |
| 0x8d | f | ザ | 12470 |
| 0x8e | g | ジ | 12472 |
| 0x8f | h | ズ | 12474 |
| 0x90 | i | ゼ | 12476 |
| 0x91 | j | ゾ | 12478 |
| 0x92 | k | ダ | 12480 |
| 0x93 | l | ヂ | 12482 |
| 0x94 | m | ヅ | 12485 |
| 0x95 | n | デ | 12487 |
| 0x96 | o | ド | 12489 |
| 0x97 | p | バ | 12496 |
| 0x98 | q | ビ | 12499 |
| 0x99 | r | ブ | 12502 |
| 0x9a | s | ベ | 12505 |
| 0x9b | t | ボ | 12508 |
| 0x9c | u | パ | 12497 |
| 0x9d | v | ピ | 12500 |
| 0x9e | w | プ | 12503 |
| 0x9f | x | ペ | 12506 |
| 0xa0 | y | ポ | 12509 |
| 0xa1 | z | ッ | 12483 |
| 0xa2 | • | ャ | 12515 |
| 0xa3 | ~ | ュ | 12517 |
| 0xa4 | 📱 | ョ | 12519 |
| 0xa5 | ー | 12540 | |
| 0xa6 | á | ァ | 12449 |
| 0xa7 | â | ィ | 12451 |
| 0xa8 | à | ゥ | 12453 |
| 0xa9 | ä | ェ | 12455 |
| 0xaa | é | ォ | 12457 |
| 0xab | ê | A | |
| 0xac | è | B | |
| 0xad | ë | C | |
| 0xae | í | D | |
| 0xaf | ï | E | |
| 0xb0 | ó | F | |
| 0xb1 | ö | G | |
| 0xb2 | ú | H | |
| 0xb3 | ü | I | |
| 0xb4 | ñ | J | |
| 0xb5 | ḉ | K | |
| 0xb6 | ß | L | |
| 0xb7 | 😄 | M | |
| 0xb8 | 😟 | N | |
| 0xb9 | 😅 | O | |
| 0xba | 0 | P | |
| 0xbb | 1 | Q | |
| 0xbc | 2 | R | |
| 0xbd | 3 | S | |
| 0xbe | 4 | T | |
| 0xbf | 5 | U | |
| 0xc0 | 6 | V | |
| 0xc1 | 7 | W | |
| 0xc2 | 8 | X | |
| 0xc3 | 9 | Y | |
| 0xc4 | / | Z | |
| 0xc5 | : | _ | |
| 0xc6 | ~ | ' | |
| 0xc7 | " | , | |
| 0xc8 | @ | . | |
| 0xc9 | a | ||
| 0xca | b | ||
| 0xcb | c | ||
| 0xcc | d | ||
| 0xcd | e | ||
| 0xce | f | ||
| 0xcf | g | ||
| 0xd0 | h | ||
| 0xd1 | i | ||
| 0xd2 | j | ||
| 0xd3 | k | ||
| 0xd4 | l | ||
| 0xd5 | m | ||
| 0xd6 | n | ||
| 0xd7 | o | ||
| 0xd8 | p | ||
| 0xd9 | q | ||
| 0xda | r | ||
| 0xdb | s | ||
| 0xdc | t | ||
| 0xdd | u | ||
| 0xde | v | ||
| 0xdf | w | ||
| 0xe0 | x | ||
| 0xe1 | y | ||
| 0xe2 | z | ||
| 0xe3 | 📱 | ||
| 0xe4 | 😅 | ||
| 0xe5 | 😄 | ||
| 0xe6 | _ | ||
| 0xe7 | 0 | ||
| 0xe8 | 1 | ||
| 0xe9 | 2 | ||
| 0xea | 3 | ||
| 0xeb | 4 | ||
| 0xec | 5 | ||
| 0xed | 6 | ||
| 0xee | 7 | ||
| 0xef | 8 | ||
| 0xf0 | 9 | ||
| 0xf1 | / | ||
| 0xf2 | : | ||
| 0xf3 | ~ | ||
| 0xf4 | " | ||
| 0xf5 | @ |