2 // PC-6001/6601 disk I/O
3 // This file is based on a disk I/O program in C++
4 // by Mr. Yumitaro and translated into C for Cocoa iP6
5 // by Koichi NISHIDA 2006
9 NEC PC-6601 Emulator 'yaPC-6601'
10 NEC PC-6601SR Emulator 'yaPC-6801'
15 [ internal floppy drive ]
22 #include "../../emu.h"
23 #include "../device.h"
27 class FLOPPY : public DEVICE
40 int Seek88(int drvno, int trackno, int sectno);
41 unsigned char Getc88(int drvno);
42 int Putc88(int drvno, unsigned char dat);
44 // data buffer (256BytesX4)
45 unsigned char Data[4][256];
49 unsigned char Data[10];
53 CmdBuffer CmdIn; // command buffer
54 CmdBuffer CmdOut; // status buffer
55 unsigned char SeekST0; // ST0 when SEEK
56 unsigned char LastCylinder; // last read cylinder
57 int SeekEnd; // complete seek flag
58 unsigned char SendSectors; // amount(100H unit)
59 int DIO; // data direction TRUE: Buffer->CPU FALSE: CPU->Buffer
60 unsigned char Status; // FDC status register
62 void Push(int part, unsigned char data);
63 unsigned char Pop(int part);
67 void PushStatus(int data);
68 unsigned char PopStatus();
69 void OutFDC(unsigned char data);
70 unsigned char InFDC();
74 void SenseInterruptStatus(void);
77 void OutB1H_66(unsigned char data);
78 void OutB2H_66(unsigned char data);
79 void OutB3H_66(unsigned char data);
80 void OutD0H_66(unsigned char data);
81 void OutD1H_66(unsigned char data);
82 void OutD2H_66(unsigned char data);
83 void OutD3H_66(unsigned char data);
84 void OutD6H_66(unsigned char data);
85 void OutD8H_66(unsigned char data);
86 void OutDAH_66(unsigned char data);
87 void OutDDH_66(unsigned char data);
88 void OutDEH_66(unsigned char data);
90 unsigned char InB2H_66();
91 unsigned char InD0H_66();
92 unsigned char InD1H_66();
93 unsigned char InD2H_66();
94 unsigned char InD3H_66();
95 unsigned char InD4H_66();
96 unsigned char InDCH_66();
97 unsigned char InDDH_66();
100 FLOPPY(VM* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu) {}
107 void write_io8(uint32 addr, uint32 data);
108 uint32 read_io8(uint32 addr);
109 uint32 read_signal(int ch);
110 void save_state(FILEIO* state_fio);
111 bool load_state(FILEIO* state_fio);
114 void set_context_ext(DEVICE* device)
118 void open_disk(int drv, _TCHAR* file_path, int offset);
119 void close_disk(int drv);
120 bool disk_inserted(int drv);