From: Joshua Wise Date: Thu, 22 May 2008 02:58:50 +0000 (-0400) Subject: Add set/res, which fixes some crashes in the test suite X-Git-Url: http://git.joshuawise.com/fpgaboy.git/commitdiff_plain/c5c1b7f3cd81b5776f5c450b44354d254eb3dc71?hp=1eb82e46a20fba718e0dd0e7ced354451189ea09 Add set/res, which fixes some crashes in the test suite --- diff --git a/Makefile b/Makefile index eaf0a6e..2779109 100644 --- a/Makefile +++ b/Makefile @@ -12,7 +12,8 @@ VLOGS_ALL = $(VLOGS) core/insn_call-callcc.v core/insn_incdec16.v \ core/insn_vop_intr.v core/insn_ldm8_a.v core/insn_ldm16_a.v \ core/insn_ldbcde_a.v core/insn_alu_ext.v core/insn_bit.v \ core/insn_two_byte.v core/insn_incdec_reg8.v core/insn_add_hl.v \ - core/insn_add_sp_imm8.v core/insn_ldhl_sp_imm8.v core/insn_ld_nn_sp.v + core/insn_add_sp_imm8.v core/insn_ldhl_sp_imm8.v core/insn_ld_nn_sp.v \ + core/insn_setres.v all: CoreTop.svf diff --git a/broken-tests b/broken-tests index fbe9c56..a164b5d 100644 --- a/broken-tests +++ b/broken-tests @@ -14,7 +14,6 @@ TEST 06: (HL/BC/DE) insns 35 (DEC (HL)) 34 (INC (HL)) CB 1E (RR (HL)) -[test crashes, likely on RES] TEST 07: Immediate insns @@ -39,7 +38,6 @@ CB 1B (RR E) CB 1C (RR H) CB 1D (RR L) CB 1F (RR A) -[test crashes, likely on RES] TEST 09: BC/DE/HL arith 09 (ADD HL, BC) diff --git a/core/allinsns.v b/core/allinsns.v index b7065ef..59571d9 100644 --- a/core/allinsns.v +++ b/core/allinsns.v @@ -32,4 +32,5 @@ `include "insn_add_hl.v" `include "insn_ldhl_sp_imm8.v" `include "insn_add_sp_imm8.v" -`include "insn_ld_nn_sp.v" \ No newline at end of file +`include "insn_ld_nn_sp.v" +`include "insn_setres.v" diff --git a/core/insn_setres.v b/core/insn_setres.v new file mode 100644 index 0000000..1df8b87 --- /dev/null +++ b/core/insn_setres.v @@ -0,0 +1,42 @@ +`define INSN_SETRES 9'b11xxxxxxx + +`ifdef EXECUTE + `INSN_SETRES: begin + if ((opcode[2:0] == `INSN_reg_dHL) && (cycle == 0)) begin + `EXEC_READ(`_HL) + end else if ((opcode[2:0] == `INSN_reg_dHL) && (cycle == 3)) begin + `EXEC_NEWCYCLE + end else begin /* It doesn't hurt for this to be done on cycle = 3, but it doesn't do any good then either. */ + `EXEC_INC_PC + case (opcode[2:0]) + `INSN_reg_A: tmp <= opcode[6] ? (`_A | (8'b1 << opcode[5:3])) : (`_A & ~(8'b1 << opcode[5:3])); + `INSN_reg_B: tmp <= opcode[6] ? (`_B | (8'b1 << opcode[5:3])) : (`_B & ~(8'b1 << opcode[5:3])); + `INSN_reg_C: tmp <= opcode[6] ? (`_C | (8'b1 << opcode[5:3])) : (`_C & ~(8'b1 << opcode[5:3])); + `INSN_reg_D: tmp <= opcode[6] ? (`_D | (8'b1 << opcode[5:3])) : (`_D & ~(8'b1 << opcode[5:3])); + `INSN_reg_E: tmp <= opcode[6] ? (`_E | (8'b1 << opcode[5:3])) : (`_E & ~(8'b1 << opcode[5:3])); + `INSN_reg_H: tmp <= opcode[6] ? (`_H | (8'b1 << opcode[5:3])) : (`_H & ~(8'b1 << opcode[5:3])); + `INSN_reg_L: tmp <= opcode[6] ? (`_L | (8'b1 << opcode[5:3])) : (`_L & ~(8'b1 << opcode[5:3])); + `INSN_reg_dHL: tmp <= opcode[6] ? (rdata | (8'b1 << opcode[5:3])) : (rdata & ~(8'b1 << opcode[5:3])); + endcase + if (opcode[2:0] != `INSN_reg_dHL) begin + `EXEC_NEWCYCLE + end + end + end +`endif + +`ifdef WRITEBACK + `INSN_SETRES: begin + if ((opcode[2:0] != `INSN_reg_dHL) || (cycle == 1)) + case (opcode[2:0]) + `INSN_reg_A: `_A <= tmp; + `INSN_reg_B: `_B <= tmp; + `INSN_reg_C: `_C <= tmp; + `INSN_reg_D: `_D <= tmp; + `INSN_reg_E: `_E <= tmp; + `INSN_reg_H: `_H <= tmp; + `INSN_reg_L: `_L <= tmp; + `INSN_reg_dHL: begin `EXEC_WRITE(`_HL, tmp) end + endcase + end +`endif