Apple-1-HW/Apple1_MiST
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nino-porcino 2022-01-02 15:34:44 +01:00
parent d0a75bf54c
commit d4c8ce6296
1 changed files with 3 additions and 4 deletions
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7
rtl/apple1_mist.sv
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@ -188,7 +188,6 @@ ram ram(
);
// SDRAM control signals
//assign SDRAM_CKE = 1'b1;
wire [24:0] sdram_addr;
wire [7:0] sdram_din;
@ -245,9 +244,9 @@ wire [7:0] cpu_dout;
wire cpu_rd;
wire cpu_wr;
wire ram_cs = cpu_addr < 16'hc000; // (cpu_addr[15:13] == 3'b000); // 0x0000 -> 0x1FFF
wire basic_cs = cpu_addr >= 16'hE000 && cpu_addr <= 16'hEFFF; // (cpu_addr[15:12] == 4'b1110); // 0xE000 -> 0xEFFF
wire rom_cs = cpu_addr >= 16'hFF00 && cpu_addr <= 16'hFFFF; // (cpu_addr[15:8] == 8'b11111111); // 0xFF00 -> 0xFFFF
wire ram_cs = cpu_addr < 16'hc000; // 0x0000 -> 0x1FFF
wire basic_cs = cpu_addr >= 16'hE000 && cpu_addr <= 16'hEFFF; // 0xE000 -> 0xEFFF
wire rom_cs = cpu_addr >= 16'hFF00 && cpu_addr <= 16'hFFFF; // 0xFF00 -> 0xFFFF
wire [7:0] bus_dout = basic_cs ? basic_dout :
rom_cs ? rom_dout :