X-Git-Url: http://git.joshuawise.com/fpgaboy.git/blobdiff_plain/5c33c5c001049403ac33d71bfbe0115c318c1b4c..7e4f4505e544aaefc0fb3f6d9cd50fcdffc6f677:/GBZ80Core.v diff --git a/GBZ80Core.v b/GBZ80Core.v index f438339..af5574f 100644 --- a/GBZ80Core.v +++ b/GBZ80Core.v @@ -52,6 +52,7 @@ `define INSN_LDH_AC 8'b111x0010 // Either LDH A,(C) or LDH (C),A `define INSN_LDx_AHL 8'b001xx010 // LDD/LDI A,(HL) / (HL),A `define INSN_ALU8 8'b10xxxxxx // 10 xxx yyy +`define INSN_ALU8IMM 8'b11xxx110 `define INSN_NOP 8'b00000000 `define INSN_RST 8'b11xxx111 `define INSN_RET 8'b110x1001 // 1 = RETI, 0 = RET @@ -118,9 +119,10 @@ module GBZ80Core( output reg [15:0] busaddress, /* BUS_* is latched on STATE_FETCH. */ inout [7:0] busdata, output reg buswr, output reg busrd, - input irq, input [7:0] jaddr); + input irq, input [7:0] jaddr, + output reg [1:0] state); - reg [1:0] state; /* State within this bus cycle (see STATE_*). */ +// reg [1:0] state; /* State within this bus cycle (see STATE_*). */ reg [2:0] cycle; /* Cycle for instructions. */ reg [7:0] registers[11:0];