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1.1 root 1: //
2: // nono
3: // Copyright (C) 2025 nono project
4: // Licensed under nono-license.txt
5: //
6:
7: //
8: // HD647180 ASCI (非同期シリアル)
9: //
10:
11: #pragma once
12:
13: #include "device.h"
14: #include "message.h"
15: #include <array>
16:
17: class HostCOMDevice;
18: class MPU64180Device;
19:
20: class HD647180ASCIDevice : public Device
21: {
22: using inherited = Device;
23:
24: // CNTLA0, CNTLA1
25: static constexpr uint32 CNTL_MPE = 0x80; // Multi Processor Enable
26: static constexpr uint32 CNTL_RE = 0x40; // Receive Enable
27: static constexpr uint32 CNTL_TE = 0x20; // Transmit Enable
28: static constexpr uint32 CNTL_nRTS0 = 0x10; // !RequestToSend
29: static constexpr uint32 CNTL_CKA1D = 0x10; // CKA1 Disable
30: static constexpr uint32 CNTL_EFR = 0x08; // Error Flag Reset
31: static constexpr uint32 CNTL_DATA8 = 0x04; // MODE2 (Data bits)
32: static constexpr uint32 CNTL_PAREN = 0x02; // MODE1 (Parity Enable)
33: static constexpr uint32 CNTL_STOP2 = 0x01; // MODE0 (Stop bits)
34:
35: // CNTLB0, CNTLB1
36: static constexpr uint32 CNTL_MPBT = 0x80; // Multi Processor Bit Transmit
37: static constexpr uint32 CNTL_MP = 0x40; // Multi Processor
38: static constexpr uint32 CNTL_nCTS = 0x20; // R: !CTS
39: static constexpr uint32 CNTL_PS = 0x20; // W: PreScaler
40: static constexpr uint32 CNTL_PEO = 0x10; // Parity Even or Odd
41: static constexpr uint32 CNTL_DR = 0x08; // Divide Ratio
42: static constexpr uint32 CNTL_SS = 0x07; // Clock Source and Speed Select
43:
44: // STAT0, STAT1
45: static constexpr uint32 STAT_RDRF = 0x80; // Receive Data Register Full
46: static constexpr uint32 STAT_OVRN = 0x40; // Over Run Error
47: static constexpr uint32 STAT_PE = 0x20; // Parity Error
48: static constexpr uint32 STAT_FE = 0x10; // Framing Error
49: static constexpr uint32 STAT_RIE = 0x08; // Receive Interrupt Enable
50: static constexpr uint32 STAT_nDCD0 = 0x04; // R: Data Carrier Detect
51: static constexpr uint32 STAT_CTS1E = 0x04; // W: !CTS Enable
52: static constexpr uint32 STAT_TDRE = 0x02; // Transmit Data Register Empty
53: static constexpr uint32 STAT_TIE = 0x01; // Transmit Interrupt Enable
54:
55: // 非同期シリアル1個分
56: struct Channel {
57: uint id; // 0 or 1
58:
59: bool rx_enable;
60: bool tx_enable;
61: bool rx_intr_enable;
62: bool tx_intr_enable;
63: bool data8bit; // MOD2
64: bool parity_en; // MOD1
65: bool stop2bit; // MOD0
66: bool parity_odd;
67: bool prescale;
68: bool divratio;
69: uint8 ss;
70: bool nCTS;
71: bool overrun;
72:
73: uint8 tdr;
74: bool tdr_empty;
75: uint8 rdr;
76: bool rdr_full;
77: int32 tsr; // 負数なら Empty。
78: int32 rsr; // 負数なら Empty。
79:
80: uint64 bit12_ns;
81: uint32 baudrate;
82: };
83:
84: public:
85: HD647180ASCIDevice();
86: ~HD647180ASCIDevice() override;
87:
88: bool Create() override;
89: bool Init() override;
90: void ResetHard(bool poweron) override;
91:
92: uint32 ReadCNTLA(uint n);
93: uint32 ReadCNTLB(uint n);
94: uint32 ReadSTAT(uint n);
95: uint32 ReadTDR(uint n);
96: uint32 ReadRDR(uint n);
97: uint32 WriteCNTLA(uint n, uint32 data);
98: uint32 WriteCNTLB(uint n, uint32 data);
99: uint32 WriteSTAT(uint n, uint32 data);
100: uint32 WriteTDR(uint n, uint32 data);
101: uint32 WriteRDR(uint n, uint32 data);
102: uint32 PeekCNTLA(uint n) const;
103: uint32 PeekCNTLB(uint n) const;
104: uint32 PeekSTAT(uint n) const;
105: uint32 PeekTDR(uint n) const;
106: uint32 PeekRDR(uint n) const;
107:
108: private:
109: DECLARE_MONITOR_CALLBACK(MonitorUpdate);
110: void MonitorUpdateChan(TextScreen&, int y, int n) const;
111:
112: void ChangeInterrupt(uint n);
113: void ChangeBaudRate(uint n);
114:
1.1.1.2 ! root 115: void TxCallback(Event *);
1.1 root 116:
117: // 受信側
118: void HostRxCallback(uint32);
119: void RxMessage(MessageID, uint32);
1.1.1.2 ! root 120: void RxCallback(Event *);
1.1 root 121: bool Rx(uint n, uint32 data);
122:
123: // 入力クロックを 160分周した基本周波数とでもいうべきもの、
124: // の 12ビット分を [nsec] にしたもの。
125: uint64 xc12_ns {};
126:
127: std::array<Channel, 2> channels {};
128: bool cts1_enable {};
129: bool cka1_disable {};
130:
131: bool nRTS0 {};
132: bool nDCD0 {};
133:
1.1.1.2 ! root 134: std::array<Event *, 2> txevent {};
! 135: std::array<Event *, 2> rxevent {};
1.1 root 136:
137: std::array<std::unique_ptr<HostCOMDevice>, 2> hostcom /*{}*/;
138:
139: Monitor *monitor {};
140:
141: MPU64180Device *xp {};
142: };
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