ps2busmouse98

PS/2 - pc-98 bus mouse converter

秋月電子通商で販売されているArduino互換ボード(AE-ATMEGA328-MINI)を用いて作成した
PS/2マウスをpc-9801用バスマウスに変換する変換器です。
現状Beta版という位置付けです。

This is a converter to convert PS/2 mouse to pc-9801 bus mouse using Arduino compatible board (AE-ATMEGA328-MINI) sold in Akizukidenshi, Japan.
Now it is beta version.

• Receiving PS/2 signal after sending a code to enable data reporting.
• Switching Hi-Z and zero output for XA/XB/YA/YB pulses and LR buttons. (it seems to have distortion issue of the pulse)
• Limiter for the movement. (the maximum movement is limited to 20 per 10ms due to the slow output pulse)
• Watchdog timer for checking irregular PS/2 signal.
• LED for PS/2 signal receiving. (duplicated to the serial port, so always lights up if DEBUG is defined)
• Checking for acknowledge of enabling data reporting.
• Parity checking.

PC used to test the mouse

PC-9801RX21
PC-9801UV21

Applications used to test the mouse

Game : Brandish

Circuit Editor : CE Version 2.5 (tested with MOUSE.COM, LIPS.COM)

Driver : Microsoft Mouse Driver v7.06 (MOUSE.COM)
Driver : Animation Mouse Driver "Lips" Revision 0.28 (LIPS.COM)
Driver : OZMOUSE Original Mouse Driver Version 0.04C (OZMOUSE.COM)

See Also

For initialization of PS/2 mouse containing USB-and-PS/2 compatible controller chip
https://github.com/barbeque/busmouse98-byou

References

PS/2 マウス/キーボード プロトコルとインターフェース
http://ioiodesu.web.fc2.com/PS2/PS2.HTML
USBマウス・USBキーボードをPC-9801に接続する変換器の製作
http://www.suwa-koubou.jp/micom/USBtoPC98/usbtopc98.html
資料室 (PC-98 マウス角コネクタ)
http://nkmm.org/yagura/lib/
秋月電子通商 (AE-ATMEGA328-MINI)
https://akizukidenshi.com/catalog/g/gK-10347/