Implement pirate mapper 044 inside the 004.RBF library.

mappers/004/chip_mmc3.sv

@@ -28,7 +28,8 @@ module chip_mmc3(
 	input  cpu_m3,
 
 	input  SSTBus sst,
-	output [7:0]sst_di
+	output [7:0]sst_di,
+	output [2:0]block_sel
 );
 
 	assign sst_di[7:0] 	=
@@ -64,6 +65,8 @@ module chip_mmc3(
 	ppu_addr[11:10] == 2 ? r8001[4][7:0] :
    r8001[5][7:0];
 
+	assign block_sel[2:0]   = rA001[2:0];
+
 	wire [3:0]reg_addr	= {!cpu_ce_n, cpu_a14, cpu_a13, cpu_a0};
 
 	wire prg_mod 			= r8000[6];

mappers/004/map_004.sv

@@ -108,7 +108,8 @@ module map_004(//MMC3
 		.cpu_m3(cpu.m3),
 
 		.sst(sst),
-		.sst_di(sst_di)
+		.sst_di(sst_di),
+		.block_sel()
 	);
 
 

mappers/004/map_044.sv

@@ -0,0 +1,126 @@
+
+module map_044( // MMC3 pirate multicart
+
+	input  MapIn  mai,
+	output MapOut mao
+);
+//************************************************************* base header
+	CpuBus cpu;
+	PpuBus ppu;
+	SysCfg cfg;
+	SSTBus sst;
+	assign cpu = mai.cpu;
+	assign ppu = mai.ppu;
+	assign cfg = mai.cfg;
+	assign sst = mai.sst;
+
+	MemCtrl prg;
+	MemCtrl chr;
+	MemCtrl srm;
+	assign mao.prg = prg;
+	assign mao.chr = chr;
+	assign mao.srm = srm;
+
+	assign prg.dati			= cpu.data;
+	assign chr.dati			= ppu.data;
+	assign srm.dati			= cpu.data;
+
+	wire int_cpu_oe;
+	wire int_ppu_oe;
+	wire [7:0]int_cpu_data;
+	wire [7:0]int_ppu_data;
+
+	assign mao.map_cpu_oe	= int_cpu_oe | (srm.ce & srm.oe) | (prg.ce & prg.oe);
+	assign mao.map_cpu_do	= int_cpu_oe ? int_cpu_data : srm.ce ? mai.srm_do : mai.prg_do;
+
+	assign mao.map_ppu_oe	= int_ppu_oe | (chr.ce & chr.oe);
+	assign mao.map_ppu_do	= int_ppu_oe ? int_ppu_data : mai.chr_do;
+//************************************************************* configuration
+	assign mao.prg_mask_off = 0;
+	assign mao.chr_mask_off = 0;
+	assign mao.srm_mask_off = 0;
+	assign mao.mir_4sc		= 1;//enable support for 4-screen mirroring. for activation should be enabled in cfg.mir_4 also
+	assign mao.bus_cf 		= 0;//bus conflicts
+//************************************************************* save state regs read
+	assign mao.sst_di[7:0] = 
+	sst.addr[7:0] <  127	? sst_di :
+	sst.addr[7:0] == 127 ? cfg.map_idx : 8'hff;	
+//************************************************************* mapper-controlled pins
+	assign srm.ce				= ram_ce;
+	assign srm.oe				= cpu.rw;
+	assign srm.we				= !ram_we_n;
+	assign srm.addr[12:0]	= cpu.addr[12:0];
+
+	assign prg.ce				= !prg_ce_n;
+	assign prg.oe 				= cpu.rw;
+	assign prg.we				= 0;
+	assign prg.addr[12:0]	= cpu.addr[12:0];
+	assign prg.addr[16:13]	= prg_addr[16:13];
+	assign prg.addr[17]     =
+	    block_sel[2:1] == 3 ? prg_addr[17] : block_sel[0];
+	assign prg.addr[19:18]  = block_sel[2:1];
+
+	assign chr.ce 				= mao.ciram_ce;
+	assign chr.oe 				= !ppu.oe;
+	assign chr.we 				= 0;
+	assign chr.addr[9:0]		= ppu.addr[9:0];
+	assign chr.addr[16:10]  = chr_addr[16:10];
+	assign chr.addr[17]     =
+	    block_sel[2:1] == 3 ? chr_addr[17] : block_sel[0];
+	assign chr.addr[19:18]  = block_sel[2:1];
+
+	//A10-Vmir, A11-Hmir
+	assign mao.ciram_a10 	= ciram_a10;
+	assign mao.ciram_ce 		= !ppu.addr[13];
+
+	assign mao.irq				= !irq_n;
+//************************************************************* mapper implementation below
+
+	wire irq_n;
+	wire ciram_a10;
+	wire ram_ce;
+	wire ram_ce_n;
+	wire ram_we_n;
+	wire prg_ce_n;
+	wire [20:13]prg_addr;
+	wire [17:10]chr_addr;
+	wire [2:0]block_sel;
+
+	wire [7:0]sst_di;
+
+	chip_mmc3 mmc3_inst(
+
+		.cpu_data(cpu.data[7:0]),
+		.cpu_a14(cpu.addr[14]),
+		.cpu_a13(cpu.addr[13]),
+		.cpu_a0(cpu.addr[0]),
+		.cpu_ce_n(!cpu.addr[15]),
+		.cpu_rw(cpu.rw),
+		.cpu_m2(cpu.m2),
+		.ppu_addr(ppu.addr[12:10]),
+
+		.irq_n(irq_n),
+		.ciram_a10(ciram_a10),
+		.ram_ce(ram_ce),
+		.ram_ce_n(ram_ce_n),
+		.ram_we_n(ram_we_n),	
+		.prg_ce_n(prg_ce_n),
+		.prg_addr(prg_addr),
+		.chr_addr(chr_addr),
+
+		.clk(mai.clk),
+		.rst(mai.map_rst),
+		.map_sub(mai.cfg.map_sub),
+		.mir_h(cfg.mir_h),
+		.cpu_m3(cpu.m3),
+
+		.sst(sst),
+		.sst_di(sst_di),
+		.block_sel(block_sel)
+	);
+
+
+
+endmodule
+
+

mappers/004/map_hub.sv

@@ -13,6 +13,7 @@ module map_hub(
 	mai.cfg.map_idx == 4		? map_out_004 :
 	mai.cfg.map_idx == 9		? map_out_009 :
 	mai.cfg.map_idx == 10	? map_out_009 :
+	mai.cfg.map_idx == 44   ? map_out_044 :
 	mai.cfg.map_idx == 155	? map_out_001 : 
 	map_out_nom;
 
@@ -35,4 +36,7 @@ module map_hub(
 	MapOut map_out_009;
 	map_009 m009(mai, map_out_009);
 
+	MapOut map_out_044;
+	map_044 m044(mai, map_out_044);
+
 endmodule

mappers/004/top.qsf

@@ -236,6 +236,7 @@ set_global_assignment -name SYSTEMVERILOG_FILE map_004.sv
 set_global_assignment -name SYSTEMVERILOG_FILE map_004_s1.sv
 set_global_assignment -name SYSTEMVERILOG_FILE map_004_s3.sv
 set_global_assignment -name SYSTEMVERILOG_FILE map_009.sv
+set_global_assignment -name SYSTEMVERILOG_FILE map_044.sv
 set_global_assignment -name SYSTEMVERILOG_FILE chip_mmc1.sv
 set_global_assignment -name SYSTEMVERILOG_FILE chip_mmc3.sv
 set_global_assignment -name SYSTEMVERILOG_FILE irq_mmc3.sv