Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1029 | chrv | 1 | #ifndef ZX_H |
| 2 | #define ZX_H |
||
| 3 | |||
| 4 | /** |
||
| 5 | * @file |
||
| 6 | * @brief Interchange with FPGA registers (ZX ports) via SPI. |
||
| 7 | * @author http://www.nedopc.com |
||
| 8 | * |
||
| 9 | * Interchange with ZX ports: |
||
| 10 | * - keyboard port (nowait); |
||
| 11 | * - mouse port (nowait); |
||
| 12 | * - kempstone joystick (nowait); |
||
| 13 | * - gluk clock (wait). |
||
| 14 | * |
||
| 15 | * Configure internal FPGA registers (set modes): |
||
| 16 | * - vga/tv mode; |
||
| 17 | * - reset CPU. |
||
| 18 | */ |
||
| 19 | |||
| 20 | // key code is 7 bits, 8th bit is press/release (1=press,0=release) |
||
| 21 | // |
||
| 22 | // ACHTUNG!!!! DO NOT CHANGE THESE DEFINES, OTHERWISE MUCH OF CODE WILL BREAK!!!! |
||
| 23 | // |
||
| 24 | #define PRESS_BIT 7 |
||
| 25 | #define PRESS_MASK 128 |
||
| 26 | #define KEY_MASK 127 |
||
| 27 | |||
| 28 | |||
| 29 | /** ZX keyboard data. */ |
||
| 30 | #define SPI_KBD_DAT 0x10 |
||
| 31 | /** ZX keyboard stop bit. */ |
||
| 32 | #define SPI_KBD_STB 0x11 |
||
| 33 | |||
| 34 | /** ZX mouse X coordinate register. */ |
||
| 35 | #define SPI_MOUSE_X 0x20 |
||
| 36 | /** ZX mouse Y coordinate register. */ |
||
| 37 | #define SPI_MOUSE_Y 0x21 |
||
| 38 | /** ZX mouse Y coordinate register. */ |
||
| 39 | #define SPI_MOUSE_BTN 0x22 |
||
| 40 | |||
| 41 | /** Kempston joystick register. */ |
||
| 42 | #define SPI_KEMPSTON_JOYSTICK 0x23 |
||
| 43 | |||
| 44 | /** ZX reset register. */ |
||
| 45 | #define SPI_RST_REG 0x30 |
||
| 46 | |||
| 47 | /** ZX configuration register. */ |
||
| 48 | #define SPI_CONFIG_REG 0x80 |
||
| 49 | /** ZX NMI bit flag of configuration register. */ |
||
| 50 | #define SPI_CONFIG_NMI_FLAG 0x02 |
||
| 51 | /** ZX TURBO bit flag of configuration register. */ |
||
| 52 | #define SPI_CONFIG_TURBO_FLAG 0x08 |
||
| 53 | /** ZX NOTURBO bit flag of configuration register. */ |
||
| 54 | #define SPI_CONFIG_NOTURBO_FLAG 0x10 |
||
| 55 | /** ZX $FE.D6 (tape in) bit flag of configuration register. */ |
||
| 56 | #define SPI_TAPE_FLAG 0x04 |
||
| 57 | |||
| 58 | /** ZX all data for wait registers. */ |
||
| 59 | #define SPI_WAIT_DATA 0x40 |
||
| 60 | /** ZX Gluk address register. */ |
||
| 61 | #define SPI_GLUK_ADDR 0x41 |
||
| 62 | /** ZX Kondratiev's rs232 address register. */ |
||
| 63 | #define SPI_RS232_ADDR 0x42 |
||
| 64 | |||
| 65 | /** Send/recv data for spi registers. */ |
||
| 66 | UBYTE zx_spi_send(UBYTE addr, UBYTE data, UBYTE mask); |
||
| 67 | |||
| 68 | |||
| 69 | /** Pause between (CS|SS) and not(CS|SS). */ |
||
| 70 | #define SHIFT_PAUSE 8 |
||
| 71 | /** Pause between (CS|SS) and not(CS|SS) counter. */ |
||
| 72 | extern volatile UBYTE shift_pause; |
||
| 73 | |||
| 74 | // real keys bitmap. send order: LSbit first, from [4] to [0] |
||
| 75 | // [5]..[9] - received data |
||
| 76 | // [10] - end scan flag |
||
| 77 | extern UBYTE zx_realkbd[11]; |
||
| 78 | |||
| 79 | /*struct zx { |
||
| 80 | UBYTE counters[40]; |
||
| 81 | UBYTE map[5]; // send order: LSbit first, from [4] to [0] |
||
| 82 | UBYTE reset_type; |
||
| 83 | };*/ |
||
| 84 | |||
| 85 | /** PS/2 keyboard CTRL key status. */ |
||
| 86 | #define KB_CTRL_MASK 0x01 |
||
| 87 | /** PS/2 keyboard ALT key status. */ |
||
| 88 | #define KB_ALT_MASK 0x02 |
||
| 89 | /** PS/2 keyboard LEFT SHIFT key status. */ |
||
| 90 | #define KB_LSHIFT_MASK 0x04 |
||
| 91 | /** PS/2 keyboard RIGHT SHIFT key status. */ |
||
| 92 | #define KB_RSHIFT_MASK 0x08 |
||
| 93 | /** PS/2 keyboard F12 key status. */ |
||
| 94 | #define KB_F12_MASK 0x10 |
||
| 95 | /** PS/2 keyboard CTRL,ALT,DEL mapped status (set = mapped all keys). */ |
||
| 96 | #define KB_CTRL_ALT_DEL_MAPPED_MASK 0x80 |
||
| 97 | /** PS/2 keyboard control keys status (for additional functons). */ |
||
| 98 | extern volatile UBYTE kb_status; |
||
| 99 | |||
| 100 | |||
| 101 | #define ZX_TASK_INIT 0 |
||
| 102 | #define ZX_TASK_WORK 1 |
||
| 103 | |||
| 104 | /** |
||
| 105 | * Interchange via SPI. |
||
| 106 | * @param operation [in] - operation type. |
||
| 107 | */ |
||
| 108 | void zx_task(UBYTE operation); |
||
| 109 | |||
| 110 | void zx_init(void); |
||
| 111 | |||
| 112 | void to_zx(UBYTE scancode, UBYTE was_E0, UBYTE was_release); |
||
| 113 | |||
| 114 | void update_keys(UBYTE zxcode, UBYTE was_release); |
||
| 115 | |||
| 116 | /** Clear zx keyboard buffers. */ |
||
| 117 | void zx_clr_kb(void); |
||
| 118 | |||
| 119 | |||
| 120 | void zx_fifo_put(UBYTE input); |
||
| 121 | UBYTE zx_fifo_isfull(void); |
||
| 122 | UBYTE zx_fifo_isempty(void); |
||
| 123 | UBYTE zx_fifo_get(void); |
||
| 124 | UBYTE zx_fifo_copy(void); |
||
| 125 | |||
| 126 | /** |
||
| 127 | * ZX mouse button register. |
||
| 128 | * Bits description: |
||
| 129 | * 7..4 - wheel code (if present) or 1111 if wheel not present; |
||
| 130 | * 3 - always 1; |
||
| 131 | * 2 - middle button (0, if pressed); |
||
| 132 | * 1 - right button (0, if pressed); |
||
| 133 | * 0 - left button (0, if pressed). |
||
| 134 | */ |
||
| 135 | extern volatile UBYTE zx_mouse_button; |
||
| 136 | |||
| 137 | /** ZX mouse X coordinate register. */ |
||
| 138 | extern volatile UBYTE zx_mouse_x; |
||
| 139 | |||
| 140 | /** ZX mouse Y coordinate register. */ |
||
| 141 | extern volatile UBYTE zx_mouse_y; |
||
| 142 | |||
| 143 | /** |
||
| 144 | * Reset ZX mouse registers to default value. |
||
| 145 | * @param enable [in] - 0: values like no mouse connected, other: values like mouse connected |
||
| 146 | */ |
||
| 147 | void zx_mouse_reset(UBYTE enable); |
||
| 148 | |||
| 149 | /** Send values of ZX mouse registers to fpga. */ |
||
| 150 | void zx_mouse_task(void); |
||
| 151 | |||
| 152 | |||
| 153 | /** Gluk clock ZX port out. */ |
||
| 154 | #define ZXW_GLUK_CLOCK 0x01 |
||
| 155 | |||
| 156 | /** Kondratiev's modem ZX port out. */ |
||
| 157 | #define ZXW_KONDR_RS232 0x02 |
||
| 158 | |||
| 159 | /** |
||
| 160 | * Work with WAIT ports. |
||
| 161 | * @param status [in] - bit 7 - CPU is 0 -write, 1-read wait port |
||
| 162 | * bits 6..0 is index of port |
||
| 163 | */ |
||
| 164 | void zx_wait_task(UBYTE status); |
||
| 165 | |||
| 166 | /** Switch vga mode on ZX */ |
||
| 167 | void zx_vga_switcher(void); |
||
| 168 | |||
| 169 | /** |
||
| 170 | * Set configuration register on zx. |
||
| 171 | * @param flags [in] - bit 0: not used (depend from MODE_VGA on modes_register) |
||
| 172 | * bit 1: NMI |
||
| 173 | */ |
||
| 174 | void zx_set_config(UBYTE flags); |
||
| 175 | |||
| 176 | #endif |
||
| 177 |