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Fix infinite loop

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This commit is contained in:
Byron Lathi
2023-09-22 19:46:25 -07:00
parent 5e03795c09
commit bc0ab7eb54
5 changed files with 44 additions and 38 deletions
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21
hw/efinix_fpga/src/super6502.sv
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@@ -81,17 +81,6 @@ logic w_divider_cs;
logic w_uart_cs;
logic w_spi_cs;
addr_decode u_addr_decode(
.i_addr(cpu_addr),
.o_rom_cs(w_rom_cs),
.o_leds_cs(w_leds_cs),
.o_timer_cs(w_timer_cs),
.o_multiplier_cs(w_multiplier_cs),
.o_divider_cs(w_divider_cs),
.o_uart_cs(w_uart_cs),
.o_spi_cs(w_spi_cs),
.o_sdram_cs(w_sdram_cs)
);
logic [7:0] w_rom_data_out;
logic [7:0] w_leds_data_out;
@@ -103,6 +92,16 @@ logic [7:0] w_spi_data_out;
logic [7:0] w_sdram_data_out;
always_comb begin
w_rom_cs = cpu_addr >= 16'hf000 && cpu_addr <= 16'hffff;
w_timer_cs = cpu_addr >= 16'heff8 && cpu_addr <= 16'heffb;
w_multiplier_cs = cpu_addr >= 16'heff0 && cpu_addr <= 16'heff7;
w_divider_cs = cpu_addr >= 16'hefe8 && cpu_addr <= 16'hefef;
w_uart_cs = cpu_addr >= 16'hefe6 && cpu_addr <= 16'hefe7;
w_spi_cs = cpu_addr >= 16'hefd8 && cpu_addr <= 16'hefdb;
w_leds_cs = cpu_addr == 16'hefff;
w_sdram_cs = cpu_addr < 16'he000;
if (w_rom_cs)
cpu_data_out = w_rom_data_out;
else if (w_leds_cs)