2018-05-03 13:47:57 +00:00
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//---------------------------------------------------------------------------
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//
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// X68000 EMULATOR "XM6"
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//
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// Copyright (C) 2001-2006 ＰＩ．(ytanaka@ipc-tokai.or.jp)
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2020-07-04 14:57:44 +00:00
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// Copyright (C) 2014-2020 GIMONS
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2018-05-03 13:47:57 +00:00
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//
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// [ SCSI共通 ]
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//
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//---------------------------------------------------------------------------
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#include "os.h"
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#include "xm6.h"
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#include "scsi.h"
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//---------------------------------------------------------------------------
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//
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// フェーズ取得
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//
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//---------------------------------------------------------------------------
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BUS::phase_t FASTCALL BUS::GetPhase()
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{
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DWORD mci;
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ASSERT(this);
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// セレクションフェーズ
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if (GetSEL()) {
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return selection;
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}
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// バスフリーフェーズ
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if (!GetBSY()) {
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return busfree;
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}
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// バスの信号線からターゲットのフェーズを取得
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mci = GetMSG() ? 0x04 : 0x00;
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mci |= GetCD() ? 0x02 : 0x00;
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mci |= GetIO() ? 0x01 : 0x00;
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return GetPhase(mci);
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}
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//---------------------------------------------------------------------------
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//
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// フェーズテーブル
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//
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//---------------------------------------------------------------------------
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const BUS::phase_t BUS::phase_table[8] = {
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dataout,
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datain,
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command,
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status,
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reserved,
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reserved,
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msgout,
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msgin
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};
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