X-Git-Url: http://git.joshuawise.com/fpgaboy.git/blobdiff_plain/6c46357c6f1bfeefc3a9f85aed03f94e923d09f1..4fd47c85d2419ac8fa788696f7fda03cf3ce8124:/GBZ80Core.v diff --git a/GBZ80Core.v b/GBZ80Core.v index 36cd76a..3931bdd 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 @@ -68,6 +69,11 @@ `define INSN_VOP_INTR 8'b11111100 // 0xFC is grabbed by the fetch if there is an interrupt pending. `define INSN_DI 8'b11110011 `define INSN_EI 8'b11111011 +`define INSN_INCDEC_HL 8'b0011010x +`define INSN_INCDEC_reg8 8'b00xxx10x +`define INSN_LD8M_A 8'b111x0000 // 1111 for ld A, x; 1110 for ld x, A; bit 1 specifies 16m8 or 8m8 +`define INSN_LD16M_A 8'b111x1010 // 1111 for ld A, x; 1110 for ld x, A; bit 1 specifies 16m8 or 8m8 +`define INSN_LDBCDE_A 8'b000xx010 // 0000 for BC, 0001 for DE, 1010 for A,(x), 0010 for (x),A `define INSN_cc_NZ 2'b00 `define INSN_cc_Z 2'b01