NEC PC-9800シリーズ MS-DOS 6.2 ユーザーズマニュアル : NEC : Free Download, Borrow, and Streaming : Internet Archive,Windows/386 2.11 (NEC PC-9800 OEM) - BetaWiki,Timeline of MS-DOS for NEC PC98 [PC98] - radioc.dat,Windows/386 2.1 (NEC PC-9800 OEM) - BetaWiki,Timeline of MS-DOS for NEC PC98 [PC98] - radioc.dat,