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6 lvd 1 
#ifndef ZX_H
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#define ZX_H
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129 chrv 4 
/**
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 * @file
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 * @brief Interchange with FPGA registers (ZX ports) via SPI.
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 * @author http://www.nedopc.com
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 *
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 * Interchange with ZX ports:
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 * - keyboard port (nowait);
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 * - mouse port (nowait);
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 * - kempstone joystick (nowait);
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 * - gluk clock (wait).
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 *
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 * Configure internal FPGA registers (set modes):
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 * - vga/tv mode;
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 * - reset CPU.
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 */
6 lvd 19 
 
20 
// key code is 7 bits, 8th bit is press/release (1=press,0=release)
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//
12 lvd 22 
// ACHTUNG!!!! DO NOT CHANGE THESE DEFINES, OTHERWISE MUCH OF CODE WILL BREAK!!!!
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//
6 lvd 24 
#define PRESS_BIT  7
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#define PRESS_MASK 128
8 lvd 26 
#define KEY_MASK   127
6 lvd 27 
 
28 
 
129 chrv 29 
/** ZX keyboard data. */
110 lvd 30 
#define SPI_KBD_DAT   0x10
129 chrv 31 
/** ZX keyboard stop bit. */
110 lvd 32 
#define SPI_KBD_STB   0x11
94 chrv 33 
 
129 chrv 34 
/** ZX mouse X coordinate register. */
110 lvd 35 
#define SPI_MOUSE_X   0x20
129 chrv 36 
/** ZX mouse Y coordinate register. */
110 lvd 37 
#define SPI_MOUSE_Y   0x21
129 chrv 38 
/** ZX mouse Y coordinate register. */
110 lvd 39 
#define SPI_MOUSE_BTN 0x22
94 chrv 40 
 
129 chrv 41 
/** Kempston joystick register. */
113 chrv 42 
#define SPI_KEMPSTON_JOYSTICK 0x23
43 
 
129 chrv 44 
/** ZX reset register. */
110 lvd 45 
#define SPI_RST_REG   0x30
67 lvd 46 
 
163 chrv 47 
/** ZX configuration register. */
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#define SPI_CONFIG_REG   0x50
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/** ZX NMI bit flag of configuration register. */
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#define SPI_CONFIG_NMI_FLAG 0x02
217 lvd 51 
/** ZX $FE.D6 (tape in) bit flag of configuration register. */
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#define SPI_TAPE_FLAG 0x04
292 chrv 53 
/** ZX tapeout mode bit flag of configuration register. */
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#define SPI_TAPEOUT_MODE_FLAG 0x08
100 chrv 55 
 
263 chrv 56 
/** ZX all data for wait registers. */
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#define SPI_WAIT_DATA  0x40
129 chrv 58 
/** ZX Gluk address register. */
263 chrv 59 
#define SPI_GLUK_ADDR  0x41
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/** ZX Kondratiev's rs232 address register. */
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#define SPI_RS232_ADDR 0x42
67 lvd 62 
 
94 chrv 63 
/** Send/recv data for spi registers. */
64 
UBYTE zx_spi_send(UBYTE addr, UBYTE data, UBYTE mask);
67 lvd 65 
 
66 
 
129 chrv 67 
/** Pause between (CS|SS) and not(CS|SS). */
12 lvd 68 
#define SHIFT_PAUSE 8
219 chrv 69 
/** Pause between (CS|SS) and not(CS|SS) counter. */
6 lvd 70 
extern volatile UBYTE shift_pause;
71 
 
115 ddp 72 
// real keys bitmap. send order: LSbit first, from [4] to [0]
119 ddp 73 
// [5]..[9] - received data
117 ddp 74 
// [10] - end scan flag
75 
extern UBYTE zx_realkbd[11];
115 ddp 76 
 
8 lvd 77 
/*struct zx {
6 lvd 78 
        UBYTE counters[40];
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        UBYTE map[5]; // send order: LSbit first, from [4] to [0]
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        UBYTE reset_type;
8 lvd 81 
};*/
6 lvd 82 
 
672 chrv 83 
/** PS/2 keyboard LCTRL key status. */
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#define KB_LCTRL_MASK   0x01
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/** PS/2 keyboard LCTRL key status. */
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#define KB_RCTRL_MASK   0x02
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/** PS/2 keyboard LALT key status. */
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#define KB_LALT_MASK    0x04
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/** PS/2 keyboard LALT key status. */
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#define KB_RALT_MASK    0x08
219 chrv 91 
/** PS/2 keyboard LEFT SHIFT key status. */
672 chrv 92 
#define KB_LSHIFT_MASK 0x10
219 chrv 93 
/** PS/2 keyboard RIGHT SHIFT key status. */
672 chrv 94 
#define KB_RSHIFT_MASK 0x20
219 chrv 95 
/** PS/2 keyboard F12 key status. */
672 chrv 96 
#define KB_F12_MASK    0x40
219 chrv 97 
/** PS/2 keyboard CTRL,ALT,DEL mapped status (set = mapped all keys). */
672 chrv 98 
//#define KB_CTRL_ALT_DEL_MAPPED_MASK 0x80
219 chrv 99 
/** PS/2 keyboard control keys status (for additional functons). */
672 chrv 100 
extern volatile UBYTE kb_ctrl_status;
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/** PS/2 keyboard control keys mapped to zx keyboard (mapped keys not used in additional functions). */
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extern volatile UBYTE kb_ctrl_mapped;
6 lvd 103 
 
67 lvd 104 
 
8 lvd 105 
#define ZX_TASK_INIT 0
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#define ZX_TASK_WORK 1
6 lvd 107 
 
129 chrv 108 
/**
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 * Interchange via SPI.
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 * @param operation [in] - operation type.
111 
 */
8 lvd 112 
void zx_task(UBYTE operation);
6 lvd 113 
 
11 lvd 114 
void zx_init(void);
8 lvd 115 
 
6 lvd 116 
void to_zx(UBYTE scancode, UBYTE was_E0, UBYTE was_release);
11 lvd 117 
 
6 lvd 118 
void update_keys(UBYTE zxcode, UBYTE was_release);
119 
 
151 chrv 120 
/** Clear zx keyboard buffers. */
11 lvd 121 
void zx_clr_kb(void);
6 lvd 122 
 
11 lvd 123 
 
6 lvd 124 
void  zx_fifo_put(UBYTE input);
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UBYTE zx_fifo_isfull(void);
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UBYTE zx_fifo_isempty(void);
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UBYTE zx_fifo_get(void);
128 
UBYTE zx_fifo_copy(void);
129 
 
75 chrv 130 
/**
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 * ZX mouse button register.
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 * Bits description:
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 * 7..4 - wheel code (if present) or 1111 if wheel not present;
115 ddp 134 
 * 3    - always 1;
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 * 2    - middle button (0, if pressed);
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 * 1    - right button (0, if pressed);
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 * 0    - left button (0, if pressed).
75 chrv 138 
 */
139 
extern volatile UBYTE zx_mouse_button;
6 lvd 140 
 
75 chrv 141 
/** ZX mouse X coordinate register. */
142 
extern volatile UBYTE zx_mouse_x;
6 lvd 143 
 
75 chrv 144 
/** ZX mouse Y coordinate register. */
145 
extern volatile UBYTE zx_mouse_y;
6 lvd 146 
 
75 chrv 147 
/**
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 * Reset ZX mouse registers to default value.
129 chrv 149 
 * @param enable [in] - 0: values like no mouse connected, other: values like mouse connected
75 chrv 150 
 */
151 
void zx_mouse_reset(UBYTE enable);
6 lvd 152 
 
75 chrv 153 
/** Send values of ZX mouse registers to fpga. */
71 chrv 154 
void zx_mouse_task(void);
6 lvd 155 
 
71 chrv 156 
 
263 chrv 157 
/** Gluk clock ZX port out. */
158 
#define ZXW_GLUK_CLOCK  0x01
94 chrv 159 
 
263 chrv 160 
/** Kondratiev's modem ZX port out. */
161 
#define ZXW_KONDR_RS232 0x02
162 
 
94 chrv 163 
/**
164 
 * Work with WAIT ports.
129 chrv 165 
 * @param status [in] - bit 7 - CPU is 0 -write, 1-read wait port
608 ddp 166 
 *                      bits 6..0 is index of port
94 chrv 167 
 */
168 
void zx_wait_task(UBYTE status);
169 
 
292 chrv 170 
/**
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 * Switch mode on ZX.
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 * @param mode - mode flag
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 */
174 
void zx_mode_switcher(UBYTE mode);
94 chrv 175 
 
163 chrv 176 
/**
177 
 * Set configuration register on zx.
608 ddp 178 
 * @param flags [in] - bit 2: SPI_TAPE_FLAG
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 *                     bit 5: not used
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 *                     bit 6: not used
181 
 *                     bit 7: not used
163 chrv 182 
 */
183 
void zx_set_config(UBYTE flags);
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6 lvd 185 
#endif
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