rom_data_pending should be just 1 bit flag (not 7)

rejunity · Nov 10, 2024 · 5421620 · 5421620
1 parent 64da04a
commit 5421620
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/src/tt_um_rejunity_atari2600.v b/src/tt_um_rejunity_atari2600.v
@@ -374,7 +374,7 @@ module tt_um_rejunity_atari2600 (
   reg spi_restart;
   // wire [23:0] spi_address = {4'b0001, rom_config[7:0], address_bus[11:0]}; // iceprog -o1024k
   wire [23:0] spi_address = {rom_config[7:5], 1'b1, rom_config[3:0], 4'b0000, address_bus[11:0]}; // iceprog -o1024k
-  wire        need_new_rom_data = valid_rom_address_on_bus      && (rom_data_pending == 0) && !rom_addr_in_cache;
+  wire        need_new_rom_data = valid_rom_address_on_bus      && !rom_data_pending && !rom_addr_in_cache;
   wire        spi_start_read = !spi_busy && (need_new_rom_data || spi_restart);
   wire        spi_stop_read =   spi_busy && need_new_rom_data;
   // wire        spi_stop_read = spi_data_ready;
@@ -414,7 +414,7 @@ module tt_um_rejunity_atari2600 (
     .busy(spi_busy)
   );
 
-  reg [7:0] rom_data_pending;
+  reg rom_data_pending;
   reg [11:0] rom_last_read_addr;
   reg [11:0] rom_next_addr_in_queue;
   wire rom_addr_in_cache = (rom_last_read_addr == address_bus[11:0] ||
@@ -446,7 +446,7 @@ module tt_um_rejunity_atari2600 (
     // 65..70% within ±4 bytes
     //  8..9%  within +4 bytes
   end
-  wire        wait_for_memory = rom_cycle && (rom_data_pending > 0);
+  wire        wait_for_memory = rom_cycle && rom_data_pending;
 `else
   wire        wait_for_memory = 0;
 `endif