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Add irq code tb

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This commit is contained in:
Byron Lathi
2023-11-18 13:55:29 -08:00
parent 27a0fe5e69
commit dea6227958
9 changed files with 186 additions and 8 deletions
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17
hw/efinix_fpga/src/super6502.sv
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@@ -82,6 +82,7 @@ logic w_multiplier_cs;
logic w_divider_cs;
logic w_uart_cs;
logic w_spi_cs;
logic w_irq_cs;
logic [7:0] w_rom_data_out;
@@ -91,6 +92,7 @@ logic [7:0] w_multiplier_data_out;
logic [7:0] w_divider_data_out;
logic [7:0] w_uart_data_out;
logic [7:0] w_spi_data_out;
logic [7:0] w_irq_data_out;
logic [7:0] w_sdram_data_out;
logic [24:0] w_mapped_addr;
@@ -99,6 +101,7 @@ always_comb begin
w_mapper_cs = cpu_addr >= 16'h200 && cpu_addr <= 16'h21f;
w_rom_cs = w_mapped_addr >= 16'hf000 && w_mapped_addr <= 16'hffff;
w_irq_cs = w_mapped_addr >= 16'heffc && w_mapped_addr <= 16'heffd;
w_timer_cs = w_mapped_addr >= 16'heff8 && w_mapped_addr <= 16'heffb;
w_multiplier_cs = w_mapped_addr >= 16'heff0 && w_mapped_addr <= 16'heff7;
w_divider_cs = w_mapped_addr >= 16'hefe8 && w_mapped_addr <= 16'hefef;
@@ -113,7 +116,8 @@ always_comb begin
w_divider_cs |
w_uart_cs |
w_spi_cs |
w_leds_cs
w_leds_cs |
w_irq_cs
);
@@ -133,6 +137,8 @@ always_comb begin
cpu_data_out = w_uart_data_out;
else if (w_spi_cs)
cpu_data_out = w_spi_data_out;
else if (w_irq_cs)
cpu_data_out = w_irq_data_out;
else if (w_sdram_cs)
cpu_data_out = w_sdram_data_out;
else
@@ -261,13 +267,20 @@ sdram_adapter u_sdram_adapter(
.o_sdr_DQM(o_sdr_DQM)
);
logic w_irq;
assign cpu_irqb = ~w_irq;
logic [255:0] int_in;
interrupt_controller u_interrupt_controller(
.clk(clk_cpu),
.reset(~cpu_resb),
.i_data(cpu_data_in),
.o_data(w_irq_data_out),
.addr(w_mapped_addr[0]),
.cs(w_irq_cs),
.rwb(cpu_rwb)
.rwb(cpu_rwb),
.int_in(int_in),
.int_out(w_irq)
);