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gikonekos/README.md

gikonekos

About

Original developer of the PC-98 doujin game "Space Panicco" (1994).
Graphics and BGM author.

I preserve and reconstruct historical software from the Japanese retro computing scene.
日本のレトロコンピュータ文化に関する歴史的ソフトウェアの保存と再構築を行っています。

Focus

Retro computer software archive and development.
レトロコンピュータソフトウェアの保存と開発。

Main systems

  • SHARP PC-E500 pocket computer series
  • NEC PC-9801 DOS platform

Projects

PLAY3 Archive

Reconstruction of the three-voice buzzer music driver published in Pocket Computer Journal (1993).

This is a scan-faithful reconstruction verified against real hardware.

https://github.com/gikonekos/PLAY3-Archive

Building Rescue Archive

Historical archive of the PC-E500 action game Building Rescue.

https://github.com/gikonekos/Building-Rescue-Archive

SC62015 Opcode Reference

Reconstructed SC62015 opcode reference based on historical printed source material.

https://github.com/gikonekos/sc62015-opcode-reference

PC-E500 Software Guide

English guide and introduction repository for SHARP PC-E500 series software.

https://github.com/gikonekos/pc-e500-software-guide

Space Panicco Archive

Historical archive of the PC-98 game Space Panicco (すぺーす ぱにっ娘).

https://github.com/gikonekos/Space-Panicco-Archive

Interests

  • retro computers
  • pocket computers
  • Japanese computer magazine culture
  • software preservation
  • sound drivers and MML systems

Links

Hackaday article (PLAY3)
https://hackaday.com/2026/03/17/polyphonic-tunes-on-the-sharp-pc-e500/

Hackaday article (SC62015 opcode reference)
https://hackaday.com/2026/03/26/reconstructed-sc62015-opcode-reference-for-sharp-pocket-computers/

YouTube
https://youtube.com/@gikonekosw

X (Twitter)
https://x.com/qptn

Popular repositories Loading

  1. PLAY3-Archive PLAY3-Archive Public

    Archive of the PLAY3 three-voice music routine for SHARP PC-E500 series

    Assembly 5

  2. Building-Rescue-Archive Building-Rescue-Archive Public

    Historical archive of Building Rescue, an action game for the SHARP PC-E500 series pocket computers.

    Assembly 1

  3. Space-Panicco-Archive Space-Panicco-Archive Public

    Historical archive of the PC-98 game Space Panicco (すぺーす ぱにっ娘)

    1

  4. sc62015-opcode-reference sc62015-opcode-reference Public

    Reconstructed SC62015 opcode reference based on historical printed source material.

    1 1

  5. gikonekos gikonekos Public

    Retro computer and early web software archive

  6. pc-e500-software-guide pc-e500-software-guide Public

    English guide and introduction repository for SHARP PC-E500 series software