マイコン独立大作戦「ＣＲＴ／ＶＧＡＩＦ＋ＫＥＹＩＦ＋ＳＤＣＡＲＤＩＦボードの製作」

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マイコン独立大作戦
ＣＲＴ/VGAIF+KEYIF+SDCARDIFボードの製作
～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～
ＷｉｎｄｏｗｓパソコンにＵＳＢ接続して使う現行方式はそれなりに便利ではありますが、ときとしてＷｉｎｄｏｗｓ
のしがらみから開放されて、小さいながらも独立した一個のパソコンとして機能したいと思うこともあります。
昔はそれが普通のことだったのですが、安価なＣＲＴディスプレイが生産中止となって久しい今日ではそれ
は叶わぬことと諦めていたのですが…。
～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～

［総合第７２回］

●ＳＤカードの仮想ドライブのバックアップ（４）

今回は前回までのところで行なった作業を、実際にＳＤカードのセクタの中身を見ることで確認してみることにします。
まず最初はＺＢ３ＤＯＳ用のＦＯＲＭＡＴを行なった直後のＦＡＴの中身を見てみます。

>format ...................... >/ld sctrd.bin,8000 loading SCTRD.BIN ...0017(23)bytes loaded,from 8000 to 8016 >cm 8004 8004 00-01 8005 00- 8006 2A- >jp 8000 >dm 8200,83ff 8200 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8210 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8220 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8230 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8240 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8250 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8260 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8270 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8280 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8290 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 82A0 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 82B0 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 82C0 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 82D0 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 82E0 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 82F0 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8300 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8310 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8320 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8330 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8340 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8350 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8360 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8370 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8380 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8390 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 83A0 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 83B0 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 83C0 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 83D0 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 83E0 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 83F0 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ >cm 8004 8004 01- 8005 00-01 8006 2A- >jp 8000 >dm 8200,83ff 8200 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8210 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8220 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8230 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8240 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8250 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8260 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8270 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8280 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8290 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82A0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82B0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82C0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82D0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82E0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82F0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8300 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8310 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8320 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8330 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8340 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8350 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8360 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8370 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8380 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8390 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83A0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83B0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83C0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83D0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83E0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83F0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................

このＳＤカードではＦＡＴエリアはセクタ№０１００から始まっています。
その最初のセクタ№０１００と次のセクタ№０１０１の中身を確認しています。
ＳＣＴＲＤを実行した結果、読み出されたセクタの内容は８２００～８３ＦＦに書き込まれます。
セクタ№０１００にはクラスタ＃００００～００ＦＦの情報があります。
クラスタ＃００００～００３ＦはシステムのエリアですからすべてＦＦＦＦで埋められています（アドレス８２００～８２７Ｆ）。
その次の８２８０～８３ＦＦがクラスタ＃００４０～００ＦＦに対応する部分です。
ここはすでに説明しましたようにＦＯＲＭＡＴコマンドによってすべてＦＦＦＦで埋められています。
クラスタ＃０１００～０１３Ｆは、次のセクタ№０１０１を読み込んだアドレス８２００～８２７Ｆになります。
ここもＦＯＲＭＡＴによってＦＦＦＦで埋められます。

この状態のＳＤカードに対して、前回説明しましたＶＦＣＬＲを実行した結果を見てみます。
ここではまだデバッグ中ですのでＶＦＣＬＲ１Ａ．ＢＩＮになっています。

>/ld vfclr1a.bin,e000 loading VFCLR1A.BIN ...0070(112)bytes loaded,from E000 to E06F >jp e000 >cm 8004 8004 00-01 8005 00- >jp 8000 >dm 8200,83ff 8200 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8210 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8220 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8230 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8240 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8250 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8260 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8270 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8280 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8290 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82A0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82B0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82C0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82D0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82E0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82F0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8300 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8310 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8320 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8330 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8340 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8350 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8360 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8370 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8380 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8390 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83A0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83B0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83C0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83D0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83E0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83F0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ >cm 8004 8004 01- 8005 00-01 8006 2A- >jp 8000 >dm 8200,83ff 8200 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8210 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8220 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8230 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8240 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8250 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8260 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8270 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8280 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8290 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82A0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82B0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82C0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82D0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82E0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82F0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8300 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8310 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8320 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8330 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8340 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8350 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8360 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8370 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8380 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8390 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83A0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83B0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83C0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83D0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83E0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83F0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................

ＶＦＣＬＲの実行によって、ＦＡＴのクラスタ＃００４０～０１３Ｆに対応する範囲が００００でクリアされています。

この状態のＳＤカードにＡ．ＶＦＤ～Ｄ．ＶＦＤをコピーしました。
下はコピー後のＦＡＴの状態です。

>dir Z . A .VFD B .VFD C .VFD D .VFD >cm 8004 8004 01- 8005 01-00 8006 2A- >jp 8000 >dm 8200,83ff 8200 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8210 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8220 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8230 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8240 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8250 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8260 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8270 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8280 41 00 42 00 43 00 44 00-45 00 46 00 47 00 48 00 A.B.C.D.E.F.G.H. 8290 49 00 4A 00 4B 00 4C 00-4D 00 4E 00 4F 00 50 00 I.J.K.L.M.N.O.P. 82A0 51 00 52 00 53 00 54 00-55 00 56 00 57 00 58 00 Q.R.S.T.U.V.W.X. 82B0 59 00 5A 00 5B 00 5C 00-5D 00 5E 00 5F 00 60 00 Y.Z.[.\.].^._.`. 82C0 61 00 62 00 63 00 64 00-65 00 66 00 67 00 68 00 a.b.c.d.e.f.g.h. 82D0 69 00 6A 00 6B 00 6C 00-6D 00 6E 00 6F 00 70 00 i.j.k.l.m.n.o.p. 82E0 71 00 72 00 73 00 74 00-75 00 76 00 77 00 78 00 q.r.s.t.u.v.w.x. 82F0 79 00 7A 00 7B 00 7C 00-7D 00 7E 00 7F 00 FF FF y.z.{.|.}.~.... 8300 81 00 82 00 83 00 84 00-85 00 86 00 87 00 88 00 ................ 8310 89 00 8A 00 8B 00 8C 00-8D 00 8E 00 8F 00 90 00 ................ 8320 91 00 92 00 93 00 94 00-95 00 96 00 97 00 98 00 ................ 8330 99 00 9A 00 9B 00 9C 00-9D 00 9E 00 9F 00 A0 00 ..............�. 8340 A1 00 A2 00 A3 00 A4 00-A5 00 A6 00 A7 00 A8 00 ｡.｢.｣.､.･.ｦ.ｧ.ｨ. 8350 A9 00 AA 00 AB 00 AC 00-AD 00 AE 00 AF 00 B0 00 ｩ.ｪ.ｫ.ｬ.ｭ.ｮ.ｯ.ｰ. 8360 B1 00 B2 00 B3 00 B4 00-B5 00 B6 00 B7 00 B8 00 ｱ.ｲ.ｳ.ｴ.ｵ.ｶ.ｷ.ｸ. 8370 B9 00 BA 00 BB 00 BC 00-BD 00 BE 00 BF 00 FF FF ｹ.ｺ.ｻ.ｼ.ｽ.ｾ.ｿ... 8380 C1 00 C2 00 C3 00 C4 00-C5 00 C6 00 C7 00 C8 00 ﾁ.ﾂ.ﾃ.ﾄ.ﾅ.ﾆ.ﾇ.ﾈ. 8390 C9 00 CA 00 CB 00 CC 00-CD 00 CE 00 CF 00 D0 00 ﾉ.ﾊ.ﾋ.ﾌ.ﾍ.ﾎ.ﾏ.ﾐ. 83A0 D1 00 D2 00 D3 00 D4 00-D5 00 D6 00 D7 00 D8 00 ﾑ.ﾒ.ﾓ.ﾔ.ﾕ.ﾖ.ﾗ.ﾘ. 83B0 D9 00 DA 00 DB 00 DC 00-DD 00 DE 00 DF 00 E0 00 ﾙ.ﾚ.ﾛ.ﾜ.ﾝ.ﾞ.ﾟ... 83C0 E1 00 E2 00 E3 00 E4 00-E5 00 E6 00 E7 00 E8 00 ................ 83D0 E9 00 EA 00 EB 00 EC 00-ED 00 EE 00 EF 00 F0 00 ................ 83E0 F1 00 F2 00 F3 00 F4 00-F5 00 F6 00 F7 00 F8 00 ................ 83F0 F9 00 FA 00 FB 00 FC 00-FD 00 FE 00 FF 00 FF FF ................ >cm 8004 8004 01- 8005 00-01 8006 2A- >jp 8000 >dm 8200,83ff 8200 01 01 02 01 03 01 04 01-05 01 06 01 07 01 08 01 ................ 8210 09 01 0A 01 0B 01 0C 01-0D 01 0E 01 0F 01 10 01 ................ 8220 11 01 12 01 13 01 14 01-15 01 16 01 17 01 18 01 ................ 8230 19 01 1A 01 1B 01 1C 01-1D 01 1E 01 1F 01 20 01 .............. . 8240 21 01 22 01 23 01 24 01-25 01 26 01 27 01 28 01 !.".#.$.%.&.'.(. 8250 29 01 2A 01 2B 01 2C 01-2D 01 2E 01 2F 01 30 01 ).*.+.,.-.../.0. 8260 31 01 32 01 33 01 34 01-35 01 36 01 37 01 38 01 1.2.3.4.5.6.7.8. 8270 39 01 3A 01 3B 01 3C 01-3D 01 3E 01 3F 01 FF FF 9.:.;.<.=.>.?... 8280 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8290 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82A0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82B0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82C0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82D0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82E0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82F0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8300 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8310 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8320 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8330 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8340 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8350 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8360 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8370 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8380 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8390 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83A0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83B0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83C0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83D0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83E0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83F0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................

最初のセクタ№０１００の中身を見てみると、Ａ．ＶＦＤがコピーされたクラスタ＃００４０～００７Ｆに対応する８２８０～８２ＦＦには００４１～００７Ｆが順に書き込まれたあと、最後がＦＦＦＦになっています。
最初のクラスタ＃００４０のＦＡＴエリア（アドレス８２８０、８２８１）に次の＃００４１が書かれていて、これはクラスタ＃００４０の次のデータがクラスタ＃００４１に続いていることを示しています。
最後のクラスタ＃００７Ｆの場所（８２ＦＥ、８２ＦＦ）にはＦＦＦＦが書かれていて、このファイルのデータはここで終わりであることを示しています。

上はＦＯＲＭＡＴ直後にＡ．ＶＦＤ～Ｄ．ＶＦＤをコピーしたときのＦＡＴの中身を示しました。
前回はＦＯＲＭＡＴ後にいくつかのファイルをコピーしたあとで、ＶＦＣＬＲを実行してから、Ａ．ＶＦＤ～Ｄ．ＶＦＤをコピーしました。
下はそのようにコピーを行なったあとのＦＡＴの内容です。

>dir Z . SZBIOS1X.BIN SZCCP1F .BIN SZINIT1D.BIN SZBDOS1N.BIN SZBDS2B .BIN SMBDS2E .BIN SMCCP1B .BIN SMINIT1B.BIN SMBDOS2C.BIN A .VFD B .VFD C .VFD D .VFD TEST .TXT VRAMTEST.TXT >/ld sctrd.bin,8000 loading SCTRD.BIN ...0017(23)bytes loaded,from 8000 to 8016 >cm 8004 8004 00-01 8005 00- >jp 8000 >dm 8200,83ff 8200 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8210 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8220 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8230 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8240 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8250 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8260 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8270 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8280 41 00 42 00 43 00 44 00-45 00 46 00 47 00 48 00 A.B.C.D.E.F.G.H. 8290 49 00 4A 00 4B 00 4C 00-4D 00 4E 00 4F 00 50 00 I.J.K.L.M.N.O.P. 82A0 51 00 52 00 53 00 54 00-55 00 56 00 57 00 58 00 Q.R.S.T.U.V.W.X. 82B0 59 00 5A 00 5B 00 5C 00-5D 00 5E 00 5F 00 60 00 Y.Z.[.\.].^._.`. 82C0 61 00 62 00 63 00 64 00-65 00 66 00 67 00 68 00 a.b.c.d.e.f.g.h. 82D0 69 00 6A 00 6B 00 6C 00-6D 00 6E 00 6F 00 70 00 i.j.k.l.m.n.o.p. 82E0 71 00 72 00 73 00 74 00-75 00 76 00 77 00 78 00 q.r.s.t.u.v.w.x. 82F0 79 00 7A 00 7B 00 7C 00-7D 00 7E 00 7F 00 FF FF y.z.{.|.}.~.... 8300 81 00 82 00 83 00 84 00-85 00 86 00 87 00 88 00 ................ 8310 89 00 8A 00 8B 00 8C 00-8D 00 8E 00 8F 00 90 00 ................ 8320 91 00 92 00 93 00 94 00-95 00 96 00 97 00 98 00 ................ 8330 99 00 9A 00 9B 00 9C 00-9D 00 9E 00 9F 00 A0 00 ..............�. 8340 A1 00 A2 00 A3 00 A4 00-A5 00 A6 00 A7 00 A8 00 ｡.｢.｣.､.･.ｦ.ｧ.ｨ. 8350 A9 00 AA 00 AB 00 AC 00-AD 00 AE 00 AF 00 B0 00 ｩ.ｪ.ｫ.ｬ.ｭ.ｮ.ｯ.ｰ. 8360 B1 00 B2 00 B3 00 B4 00-B5 00 B6 00 B7 00 B8 00 ｱ.ｲ.ｳ.ｴ.ｵ.ｶ.ｷ.ｸ. 8370 B9 00 BA 00 BB 00 BC 00-BD 00 BE 00 BF 00 FF FF ｹ.ｺ.ｻ.ｼ.ｽ.ｾ.ｿ... 8380 C1 00 C2 00 C3 00 C4 00-C5 00 C6 00 C7 00 C8 00 ﾁ.ﾂ.ﾃ.ﾄ.ﾅ.ﾆ.ﾇ.ﾈ. 8390 C9 00 CA 00 CB 00 CC 00-CD 00 CE 00 CF 00 D0 00 ﾉ.ﾊ.ﾋ.ﾌ.ﾍ.ﾎ.ﾏ.ﾐ. 83A0 D1 00 D2 00 D3 00 D4 00-D5 00 D6 00 D7 00 D8 00 ﾑ.ﾒ.ﾓ.ﾔ.ﾕ.ﾖ.ﾗ.ﾘ. 83B0 D9 00 DA 00 DB 00 DC 00-DD 00 DE 00 DF 00 E0 00 ﾙ.ﾚ.ﾛ.ﾜ.ﾝ.ﾞ.ﾟ... 83C0 E1 00 E2 00 E3 00 E4 00-E5 00 E6 00 E7 00 E8 00 ................ 83D0 E9 00 EA 00 EB 00 EC 00-ED 00 EE 00 EF 00 F0 00 ................ 83E0 F1 00 F2 00 F3 00 F4 00-F5 00 F6 00 F7 00 F8 00 ................ 83F0 F9 00 FA 00 FB 00 FC 00-FD 00 FE 00 FF 00 FF FF ................ >cm 8004 8004 01- 8005 00-01 8006 2A- >jp 8000 >dm 8200,83ff 8200 01 01 02 01 03 01 04 01-05 01 06 01 07 01 08 01 ................ 8210 09 01 0A 01 0B 01 0C 01-0D 01 0E 01 0F 01 10 01 ................ 8220 11 01 12 01 13 01 14 01-15 01 16 01 17 01 18 01 ................ 8230 19 01 1A 01 1B 01 1C 01-1D 01 1E 01 1F 01 20 01 .............. . 8240 21 01 22 01 23 01 24 01-25 01 26 01 27 01 28 01 !.".#.$.%.&.'.(. 8250 29 01 2A 01 2B 01 2C 01-2D 01 2E 01 2F 01 30 01 ).*.+.,.-.../.0. 8260 31 01 32 01 33 01 34 01-35 01 36 01 37 01 38 01 1.2.3.4.5.6.7.8. 8270 39 01 3A 01 3B 01 3C 01-3D 01 3E 01 3F 01 FF FF 9.:.;.<.=.>.?... 8280 FF FF FF FF FF FF FF FF-FF FF FF FF FF FF FF FF ................ 8290 FF FF FF FF FF FF 00 00-00 00 00 00 00 00 00 00 ................ 82A0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82B0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82C0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82D0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82E0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 82F0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8300 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8310 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8320 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8330 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8340 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8350 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8360 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8370 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8380 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 8390 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83A0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83B0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83C0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83D0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83E0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................ 83F0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................

セクタ№０１０１の中身を読み込んだ８２００～８３ＦＦのところで、８２８０～８２９５がＦＦＦＦで埋められています。
ここにはＡ．ＶＦＤ～Ｄ．ＶＦＤをコピーする前後に作成（またはコピー）されたファイルのクラスタ情報が書かれています。

下はディレクトリエリアの内容です。

>cm 8004 8004 01-02 8005 E0- >jp 8000 >dm 8200,83ff 8200 5A 20 20 20 20 20 20 20-20 20 20 10 00 00 00 00 Z ..... 8210 00 00 00 00 00 00 00 00-00 00 02 00 00 00 00 00 ................ 8220 53 5A 42 49 4F 53 31 58-42 49 4E 20 00 BC 05 AF SZBIOS1XBIN .ｼ.ｯ 8230 AF 4A AF 4A 00 00 64 7D-90 4A 40 01 BB 03 00 00 ｯJｯJ..d}.J@.ｻ... 8240 53 5A 43 43 50 31 46 20-42 49 4E 20 00 C0 05 AF SZCCP1F BIN .ﾀ.ｯ 8250 AF 4A AF 4A 00 00 62 AE-8D 4A 41 01 02 08 00 00 ｯJｯJ..bｮ.JA..... 8260 53 5A 49 4E 49 54 31 44-42 49 4E 20 00 C2 05 AF SZINIT1DBIN .ﾂ.ｯ 8270 AF 4A AF 4A 00 00 8F 42-8D 4A 42 01 8C 00 00 00 ｯJｯJ...B.JB..... 8280 53 5A 42 44 4F 53 31 4E-42 49 4E 20 00 C3 05 AF SZBDOS1NBIN .ﾃ.ｯ 8290 AF 4A AF 4A 00 00 32 99-8E 4A 43 01 A7 0D 00 00 ｯJｯJ..2..JC.ｧ... 82A0 53 5A 42 44 53 32 42 20-42 49 4E 20 00 C5 05 AF SZBDS2B BIN .ﾅ.ｯ 82B0 AF 4A AF 4A 00 00 72 41-98 4A 44 01 BB 19 00 00 ｯJｯJ..rA.JD.ｻ... 82C0 53 4D 42 44 53 32 45 20-42 49 4E 20 00 2B 0D AF SMBDS2E BIN .+.ｯ 82D0 AF 4A AF 4A 00 00 EF 4A-94 4A 45 01 BF 19 00 00 ｯJｯJ...J.JE.ｿ... 82E0 53 4D 43 43 50 31 42 20-42 49 4E 20 00 2C 0D AF SMCCP1B BIN .,.ｯ 82F0 AF 4A AF 4A 00 00 C5 41-93 4A 46 01 02 08 00 00 ｯJｯJ..ﾅA.JF..... 8300 53 4D 49 4E 49 54 31 42-42 49 4E 20 00 2F 0D AF SMINIT1BBIN ./.ｯ 8310 AF 4A AF 4A 00 00 10 3B-93 4A 47 01 8C 00 00 00 ｯJｯJ...;.JG..... 8320 53 4D 42 44 4F 53 32 43-42 49 4E 20 00 31 0D AF SMBDOS2CBIN .1.ｯ 8330 AF 4A AF 4A 00 00 CE 44-93 4A 48 01 A6 0D 00 00 ｯJｯJ..ﾎD.JH.ｦ... 8340 41 20 20 20 20 20 20 20-56 46 44 20 10 7D 52 AF A VFD .}Rｯ 8350 AF 4A AF 4A 00 00 E4 92-86 42 40 00 00 00 20 00 ｯJｯJ.....B@... . 8360 42 20 20 20 20 20 20 20-56 46 44 20 10 1D 56 AF B VFD ..Vｯ 8370 AF 4A B0 4A 00 00 DD 42-B0 4A 80 00 00 00 20 00 ｯJｰJ..ﾝBｰJ.... . 8380 43 20 20 20 20 20 20 20-56 46 44 20 10 0E 59 AF C VFD ..Yｯ 8390 AF 4A AF 4A 00 00 60 58-87 42 C0 00 00 00 20 00 ｯJｯJ..`X.Bﾀ... . 83A0 44 20 20 20 20 20 20 20-56 46 44 20 10 3C 5C AF D VFD .<\ｯ 83B0 AF 4A AF 4A 00 00 87 AE-AF 4A 00 01 00 00 20 00 ｯJｯJ...ｮｯJ.... . 83C0 54 45 53 54 20 20 20 20-54 58 54 20 00 00 00 00 TEST TXT .... 83D0 00 00 00 00 00 00 00 00-00 00 49 01 5F 00 00 00 ..........I._... 83E0 56 52 41 4D 54 45 53 54-54 58 54 20 00 00 00 00 VRAMTESTTXT .... 83F0 00 00 00 00 00 00 00 00-00 00 4A 01 41 00 00 00 ..........J.A...

ファイルのデータが置かれている最初のクラスタ＃は、３２バイトごとに区切られたファイル名エリアの２７、２８バイト目にあります。
ＳＺＢＩＯＳ１Ｘ．ＢＩＮは０１４０、ＳＺＣＣＰ１Ｆ．ＢＩＮは０１４１、Ａ．ＶＦＤは００４０、Ｂ．ＶＦＤは００８０、Ｃ．ＶＦＤは００Ｃ０、Ｄ．ＶＦＤは０１００と書かれていることがわかります。
そのあとのＴＥＳＴ．ＴＸＴはＳＭＢＤＯＳ２Ｃ．ＢＩＮの０１４８のうしろの０１４９になっていて、Ａ．ＶＦＤ～Ｄ．ＶＦＤのコピーとそれ以外のファイルのコピーが正しくおさまっていることが確認できます。

このところ説明してきましたように、ＶＦＣＬＲを実行することで、Ａ．ＶＦＤ～Ｄ．ＶＦＤを簡単にコピー、バックアップすることができます。
ということでこのＶＦＣＬＲ．ＢＩＮを皆様にお届けする簡単な方法として、当ホームページからダウンロードしていただくことにしました。
ところがここまで書いてきまして、そういえばＶＦＣＬＲ．ＢＩＮはＮＤ８０Ｚ３．５（ＮＤ８０ＺⅢ）でしか実行してなくて、ＮＤ８０８０、ＭＹＣＰＵ８０では未確認であるということに気が付きました。

そういうことですので、ＶＦＣＬＲ．ＢＩＮのダウンロードにつきましては、次回までお待ちください。

ＣＲＴ／ＶＧＡＩＦ＋ＫＥＹＩＦ＋ＳＤＣＡＲＤＩＦボードの製作［総合第７２回］
２０１７．５．１７ｕｐｌｏａｄ

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