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nono 1.7.0
//
// nono
// Copyright (C) 2020 nono project
// Licensed under nono-license.txt
//
//
// CRTC
//
#pragma once
#include "device.h"
class MFPDevice;
class TVRAMDevice;
class VideoCtlrDevice;
struct CRTC
{
// 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R00 | - | 水平トータル |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R01 | - | 水平同期終了位置 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R02 | - | 水平表示開始位置 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R03 | - | 水平表示終了位置 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
//
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R04 | - | 垂直トータル |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R05 | - | 垂直同期終了位置 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R06 | - | 垂直表示開始位置 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R07 | - | 垂直表示終了位置 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
//
// 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R08 | - | 外部同期水平アジャスト |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R09 | - | ラスタ番号 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R10 | - | テキスト画面スクロール X位置 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R11 | - | テキスト画面スクロール Y位置 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
//
// 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R12 | - | グラフィック画面スクロール X0 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R13 | - | グラフィック画面スクロール Y0 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R14 | - | グラフィック画面スクロール X1 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R15 | - | グラフィック画面スクロール Y1 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R16 | - | グラフィック画面スクロール X2 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R17 | - | グラフィック画面スクロール Y2 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R18 | - | グラフィック画面スクロール X3 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R19 | - | グラフィック画面スクロール Y3 |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
//
// 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R20 | - |MEM|SIZ| COL | - |HF | VD | HD |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R21 | - |MEN|SA | AP | CP |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R22 | ソースラスタ | デスティネーションラスタ |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// R23 | マスクパターン |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
//
// 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
// OP | - |RC | 0 |FC |VI |
// +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
uint16 r[24];
uint16 op;
static const uint32 R00 = 0x00; // $E80000
static const uint32 R01 = 0x01; // $E80002
static const uint32 R02 = 0x02; // $E80004
static const uint32 R03 = 0x03; // $E80006
static const uint32 R04 = 0x04; // $E80008
static const uint32 R05 = 0x05; // $E8000A
static const uint32 R06 = 0x06; // $E8000C
static const uint32 R07 = 0x07; // $E8000E
static const uint32 R08 = 0x08; // $E80010
static const uint32 R09 = 0x09; // $E80012
static const uint32 R10 = 0x0a; // $E80014
static const uint32 R11 = 0x0b; // $E80016
static const uint32 R12 = 0x0c; // $E80018
static const uint32 R13 = 0x0d; // $E8001A
static const uint32 R14 = 0x0e; // $E8001C
static const uint32 R15 = 0x0f; // $E8001E
static const uint32 R16 = 0x10; // $E80020
static const uint32 R17 = 0x11; // $E80022
static const uint32 R18 = 0x12; // $E80024
static const uint32 R19 = 0x13; // $E80026
static const uint32 R20 = 0x14; // $E80028
static const uint32 R21 = 0x15; // $E8002A
static const uint32 R22 = 0x16; // $E8002C
static const uint32 R23 = 0x17; // $E8002E
static const uint32 REG_END = 0x18;
static const uint32 REG_OP = 0x240; // $E80480
// R20
static const uint16 R20_MEM = 0x0800;
static const uint16 R20_SIZ = 0x0400;
static const uint16 R20_COL = 0x0300;
static const uint16 R20_HF = 0x0010;
static const uint16 R20_VD = 0x000c;
static const uint16 R20_HD = 0x0003;
// 動作ポート
static const uint32 OP_RC = 0x08; // ラスターコピー開始(%1)
static const uint32 OP_FC = 0x02; // 高速クリア開始(%1)
static const uint32 OP_VI = 0x01; // 画像取り込み開始(%1)
};
class CRTCDevice : public IODevice
{
using inherited = IODevice;
public:
CRTCDevice();
~CRTCDevice() override;
bool Init() override;
void ResetHard(bool poweron) override;
busdata Read(busaddr addr) override;
busdata Write(busaddr addr, uint32 data) override;
busdata Peek1(uint32 offset) override;
private:
static inline uint32 Decoder(uint32 addr);
// ワード読み出し
busdata Peek2(uint32 addr) const;
// レジスタへの書き込み
void SetReg(uint32 offset, uint32 data);
// 動作ポートへの書き込み
void WriteOp(uint32 data);
// 水平同期信号イベント
void HSyncCallback(Event *);
// ラスターコピー完了イベント
void RasterCallback(Event *);
// 垂直表示期間イベント
void VDispCallback(Event *);
DECLARE_MONITOR_SCREEN(MonitorScreen);
struct CRTC crtc {};
// ラスターコピー指示
bool raster_copy {};
// XXX もうちょっとなんとかする
uint hsync_state {};
uint vdisp_state {};
MFPDevice *mfp {};
TVRAMDevice *tvram {};
VideoCtlrDevice *videoctlr {};
Event *hsync_event {};
Event *vdisp_event {};
Event *raster_event {};
Monitor *monitor {};
static const busdata wait;
};
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