It's official abandonware. The author states it here: http://www.forum64.de/wbb3/board314-au-erhalb-des-c64/board21-sonstige-computer/board245-schneider-amstrad/board22-cpc/15884-bonnydos-symbos/?s=b444f0520a84d26e1064d0e9a4e7f85050af3d60
* [[Media:BDOS_SystemDisks.zip|BonnyDOS System Disks]]