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１５９回］
●ＬＯＧディレクトリの修復（４）
前回の続きです。
前回はＳＣＴＲＤ．ＢＩＮを使ってＬＯＧディレクトリに割り当てられたセクタを前から順に読んでいった結果、セクタ№３０Ｆが破損していることがわかりました。
今回はその修復作業です。
破損している部分をクリアにする（３２バイト単位で００を書き込む）ことでもよいのですが、手っ取り早く１セクタを丸ごとクリアしてしまうことにしました。
その準備として、まずはバッファとして使っている８２００～８３ＦＦを００で置き換えました。
>/ld filld.bin,8400 loading FILLD.BIN ...0013(19)bytes loaded,from 8400 to 8412 >jp 8400 >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 ................ |
ここで使ったＦＩＬＬＤ．ＢＩＮはそのための簡単なプログラムです。
下にリストを示します。
2017/10/27 18:48 filld.txt
END=8412
;;; fill data to $8200-$83ff
; 17/10/27
;
ORG $8400
;
REENT=$1033
;
8400 1600 LD D,00
8402 210082 LD HL,$8200
8405 010002 LD BC,$0200
8408 72 LOOP:LD (HL),D
8409 23 INC HL
840A 0B DEC BC
840B 78 LD A,B
840C B1 OR C
840D C20884 JP NZ,LOOP
8410 C33310 JP REENT
;
LOOP =8408 REENT =1033
|
これで準備ができましたので、ＳＣＴＷＲ．ＢＩＮを使ってセクタ№３０Ｆを書き換えます。
ついでなのでちょっと怪しかったセクタ№３１０も書き換えます。
>/ld sctwr.bin,8100 loading SCTWR.BIN ...0017(23)bytes loaded,from 8100 to 8116 >cm 8103 8103 00- 8104 00-03 8105 00-0f 8106 2A- >jp 8100 >cm 8103 8103 00- 8104 03- 8105 0F-10 8106 2A- >jp 8100 |
正しく書き換えられたかどうか、ＳＣＴＲＤ．ＢＩＮを使って読み出して確認してみます。
>>cm 8003 8003 00- 8004 03- 8005 10-0F 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 ................ >cm 8003 8003 00- 8004 03- 8005 0F-10 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 ................ |
どちらのセクタもちゃんとゼロクリアできました。
最後の仕上げです。
ＤＩＲＬが正しく実行されるかどうか確認してみました。
>dirl 12141506.LOG 12141515.LOG 12141518.LOG 12141522.LOG 12141526.LOG 12141809.LOG 12141829.LOG 12141847.LOG 12151819.LOG 12151826.LOG 12152131.LOG 12152137.LOG 12152138.LOG 12152141.LOG 1215214A.LOG 12181554.LOG 1218155D.LOG 12181611.LOG 12181613.LOG 12181616.LOG 12181619.LOG TEST1 .TXT 12181818.LOG 12191026.LOG 12191027.LOG 12191043.LOG 12191050.LOG 12192205.LOG 12192207.LOG 12192221.LOG 12192225.LOG 12192227.LOG 1219222G.LOG 12192236.LOG 12192238.LOG 12192250.LOG 12192252.LOG 12192256.LOG 12192258.LOG 12200748.LOG 12200810.LOG 12200815.LOG 12200821.LOG 12200902.LOG 12200908.LOG 12201954.LOG 12201956.LOG 12202007.LOG 12202050.LOG 12202056.LOG 12210809.LOG 12210810.LOG 12210823.LOG 1221082C.LOG 12210852.LOG 12210853.LOG 12210937.LOG 12210940.LOG 12211420.LOG 12211510.LOG 12211600.LOG 12211605.LOG 12211608.LOG 12211612.LOG 12211648.LOG 12211652.LOG 12211654.LOG 1221165D.LOG 12220930.LOG 12220941.LOG 12220942.LOG 12220946.LOG 12220951.LOG 12221019.LOG 12221023.LOG 12221026.LOG 1222102F.LOG 12221035.LOG 12221045.LOG 12221047.LOG 12221054.LOG 12221126.LOG 12221128.LOG 12221208.LOG 12222155.LOG 12222156.LOG 12222157.LOG 12222159.LOG 12222200.LOG 12222202.LOG 12222204.LOG 12222206.LOG 12222220.LOG 12222222.LOG 12222233.LOG 12222235.LOG 12230912.LOG 12230942.LOG 12230948.LOG 12230950.LOG 12231105.LOG 12231106.LOG 12231118.LOG 12231120.LOG 12231130.LOG 12231132.LOG 12231138.LOG 12231140.LOG 12231152.LOG 12231154.LOG 12231317.LOG 12231322.LOG 12231942.LOG 12231344.LOG 12231348.LOG 12231350.LOG 12231357.LOG 12231359.LOG 12231405.LOG 12231408.LOG 12231409.LOG 12261142.LOG 12261144.LOG 12261201.LOG 12301101.LOG 12301116.LOG 12261700.LOG 12301829.LOG 12301832.LOG 12302110.LOG 12302155.LOG 12311134.LOG 12311135.LOG 12311137.LOG 12311139.LOG 12311143.LOG 12311531.LOG 12311532.LOG 12311535.LOG 12311536.LOG 12311537.LOG 01081450.LOG 02250934.LOG 02250936.LOG 02250942.LOG 03031500.LOG 03031505.LOG 03031509.LOG 03031537.LOG 03031542.LOG 03031543.LOG 03071401.LOG 03071405.LOG 03071412.LOG 03071413.LOG 03071414.LOG 03071438.LOG 03071450.LOG 01110813.LOG 01110924.LOG 01150827.LOG 01150828.LOG 01150830.LOG 01150832.LOG 01221800.LOG 01221827.LOG 01221829.LOG 01231130.LOG 01231133.LOG 01290923.LOG 01290934.LOG 01290935.LOG 01010000.LOG 0101000J.LOG 02151756.LOG 02151805.LOG 0101000Z.LOG 02151900.LOG 02151901.LOG 02170804.LOG 02170805.LOG 010100JZ.LOG 010100ZZ.LOG 01010JZZ.LOG 02170822.LOG 02241559.LOG 02241749.LOG 02241750.LOG 0224175J.LOG 02241751.LOG > |
ゴミが消えてＬＯＧディレクトリが正常に表示されるようになりました。
ＣＲＴ／ＶＧＡＩＦ＋ＫＥＹＩＦ＋ＳＤＣＡＲＤＩＦボードの製作［総合第１５９回］
２０１８．４．１１ｕｐｌｏａｄ
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