X-Git-Url: http://git.joshuawise.com/fpgaboy.git/blobdiff_plain/77ab69d7bb0902e6ebf0994159ed2205f8413e34..b057a5d6e6db6db06ae33703ca72cd235eec91d6:/core/insn_ld_reg_imm16.v diff --git a/core/insn_ld_reg_imm16.v b/core/insn_ld_reg_imm16.v new file mode 100644 index 0000000..cf79aaa --- /dev/null +++ b/core/insn_ld_reg_imm16.v @@ -0,0 +1,34 @@ +`ifdef EXECUTE + `INSN_LD_reg_imm16: begin + `EXEC_INC_PC + case (cycle) + 0: `EXEC_READ(`_PC + 1) + 1: `EXEC_READ(`_PC + 1) + 2: `EXEC_NEWCYCLE + endcase + end +`endif + +`ifdef WRITEBACK + `INSN_LD_reg_imm16: begin + case (cycle) + 0: begin /* */ end + 1: begin + case (opcode[5:4]) + `INSN_reg16_BC: `_C <= rdata; + `INSN_reg16_DE: `_E <= rdata; + `INSN_reg16_HL: `_L <= rdata; + `INSN_reg16_SP: `_SPL <= rdata; + endcase + end + 2: begin + case (opcode[5:4]) + `INSN_reg16_BC: `_B <= rdata; + `INSN_reg16_DE: `_D <= rdata; + `INSN_reg16_HL: `_H <= rdata; + `INSN_reg16_SP: `_SPH <= rdata; + endcase + end + endcase + end +`endif