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module zxspectrum_board
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module zxspectrum_board
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(
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(
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//-------- Clocks and reset -----------------
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//-------- Clocks and reset -----------------
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input wire CLOCK_27, // Input clock 27 MHz
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input wire CLOCK_27, // Input clock 27 MHz
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input wire CLOCK_24, // Input clock 24 MHz
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input wire CLOCK_24, // Input clock 24 MHz
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input wire KEY0, // RESET button
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input wire KEY0, // RESET button; on DE1, keys are active low!
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input wire KEY1, // NMI button
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input wire KEY1, // NMI button
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//-------- PS/2 Keyboard --------------------
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//-------- PS/2 Keyboard --------------------
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input wire PS2_CLK,
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input wire PS2_CLK,
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input wire PS2_DAT,
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input wire PS2_DAT,
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//-------- Clocks and reset -----------------
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//-------- Clocks and reset -----------------
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.CLOCK_27 (CLOCK_27), // Input clock 27 MHz
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.CLOCK_27 (CLOCK_27), // Input clock 27 MHz
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.CLOCK_24 (CLOCK_24), // Input clock 24 MHz
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.CLOCK_24 (CLOCK_24), // Input clock 24 MHz
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.turbo (SW2), // Turbo speed (3.5 MHz x 2 = 7.0 MHz)
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.turbo (SW2), // Turbo speed (3.5 MHz x 2 = 7.0 MHz)
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.clk_vram (clk_vram),
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.clk_vram (clk_vram),
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.reset (reset), // KEY0 is reset
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.nreset (reset), // KEY0 is reset; on DE1, keys are active low!
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.locked (locked), // PLL is locked signal
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.locked (locked), // PLL is locked signal
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//-------- CPU control ----------------------
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//-------- CPU control ----------------------
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.clk_cpu (clk_cpu), // Generates CPU clock of 3.5 MHz
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.clk_cpu (clk_cpu), // Generates CPU clock of 3.5 MHz
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.vs_nintr (vs_nintr), // Generates a vertical retrace interrupt
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.vs_nintr (vs_nintr), // Generates a vertical retrace interrupt
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