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extend Lumacode support to NES
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marqs
parent
2abb9a8668
commit
95724c2481
@ -114,8 +114,8 @@ typedef union {
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uint8_t bfi_str:4;
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uint8_t bfi_enable:1;
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uint8_t shmask_mode:2;
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uint8_t lumacode_mode:2;
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uint32_t misc_rsv:7;
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uint8_t lumacode_mode:3;
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uint32_t misc_rsv:6;
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} __attribute__((packed, __may_alias__));
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uint32_t data;
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} misc_config_reg;
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3
ossc.sdc
3
ossc.sdc
@ -52,6 +52,9 @@ foreach_in_collection c [get_clocks pclk_*_out] {
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}
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set_false_path -to [remove_from_collection [all_outputs] $critoutputs_hdmi]
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# Lumacode
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set_false_path -from [get_clocks pclk_tvp_high] -through [get_cells tvp7002_frontend:u_tvp_frontend|lc_code*]
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### CPU/scanconverter clock relations ###
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@ -96,8 +96,10 @@ reg signed [14:0] R_diff_s15_pre, G_diff_s15_pre, B_diff_s15_pre, R_diff_s15, G_
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reg [7:0] R_pp_prev_rlpf, G_pp_prev_rlpf, B_pp_prev_rlpf;
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// Lumacode
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reg [1:0] lumacode_msbs, lumacode_lsbs;
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wire [3:0] lumacode = {lumacode_msbs, lumacode_lsbs};
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reg [1:0] lc_code[1:4];
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reg [2:0] lc_ctr;
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reg [2:0] lc_cnt;
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reg [2:0] lc_emp_nes;
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// Measurement registers
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reg [20:0] pcnt_frame_ctr;
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@ -121,7 +123,7 @@ wire [8:0] V_BACKPORCH = hv_in_config3[12:4];
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wire [5:0] MISC_REV_LPF_STR = (misc_config[11:7] + 6'd16);
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wire MISC_REV_LPF_ENABLE = (misc_config[11:7] != 5'h0);
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wire [1:0] MISC_LUMACODE_MODE = misc_config[24:23];
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wire [2:0] MISC_LUMACODE_MODE = misc_config[25:23];
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wire [11:0] h_cnt_ref = (vsync_i_type == VSYNC_SEPARATED) ? h_cnt_sogref : h_cnt;
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wire [11:0] even_min_thold = (H_TOTAL / 12'd4);
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@ -142,12 +144,25 @@ wire HSYNC_i_np = (HSYNC_i ^ ~hsync_i_pol);
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// Sample skip for low-res optimized modes
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wire [3:0] H_SKIP = hv_in_config3[27:24];
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wire [3:0] H_SAMPLE_SEL = hv_in_config3[31:28];
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wire [3:0] H_SAMPLE_SEL_ALT = (H_SAMPLE_SEL >= (H_SKIP+1)/2) ? (H_SAMPLE_SEL - ((H_SKIP+1)/2)) : (H_SAMPLE_SEL + ((H_SKIP+1)/2));
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// Lumacode tables (C64, Spectrum, Coleco/MSX)
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wire [23:0] lumacode_data[0:2][0:15] = '{'{ 24'h000000,24'h2a1b9d,24'h7d202c,24'h84258c,24'h4c2e00,24'h3c3c3c,24'h646464,24'h4fb3a5,24'h7f410d,24'h6351db,24'h939393,24'hbfd04a,24'h339840,24'hb44f5c,24'h7ce587,24'hffffff},
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'{ 24'h000000,24'h000000,24'h0200FD,24'hCF01CE,24'h0100CE,24'hCF0100,24'hFF02FD,24'h01CFCF,24'hFF0201,24'h00CF15,24'h02FFFF,24'hFFFF1D,24'h00FF1C,24'hCFCF15,24'hCFCFCF,24'hFFFFFF},
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'{ 24'h000000,24'h5455ed,24'hfc5554,24'hff7978,24'h000000,24'hd4524d,24'h7d76fc,24'h42ebf5,24'h21b03b,24'h21c842,24'hff7978,24'hcccccc,24'hc95bba,24'hd4c154,24'he6ce80,24'hffffff}};
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// Lumacode uses 2 samples for {C64, C128, VIC20, Spectrum, TMS99xxA}, 3 samples for NES, 4 samples for VCS and 6 samples for Atari 8bit
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wire [2:0] LC_SAMPLES = (MISC_LUMACODE_MODE <= 3) ? 2 : ((MISC_LUMACODE_MODE <= 4) ? 3 : ((MISC_LUMACODE_MODE <= 5) ? 4 : 6));
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wire [2:0] LC_H_SKIP = ((H_SKIP+1) / LC_SAMPLES) - 1;
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// Lumacode palettes for 2-sample index-based sources (C64, Spectrum, Coleco/MSX)
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wire [23:0] lumacode_data_2s[0:2][0:15] = '{'{ 24'h000000,24'h2a1b9d,24'h7d202c,24'h84258c,24'h4c2e00,24'h3c3c3c,24'h646464,24'h4fb3a5,24'h7f410d,24'h6351db,24'h939393,24'hbfd04a,24'h339840,24'hb44f5c,24'h7ce587,24'hffffff},
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'{ 24'h000000,24'h000000,24'h0200FD,24'hCF01CE,24'h0100CE,24'hCF0100,24'hFF02FD,24'h01CFCF,24'hFF0201,24'h00CF15,24'h02FFFF,24'hFFFF1D,24'h00FF1C,24'hCFCF15,24'hCFCFCF,24'hFFFFFF},
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'{ 24'h000000,24'h5455ed,24'hfc5554,24'hff7978,24'h000000,24'hd4524d,24'h7d76fc,24'h42ebf5,24'h21b03b,24'h21c842,24'hff7978,24'hcccccc,24'hc95bba,24'hd4c154,24'he6ce80,24'hffffff}};
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// Lumacode palette for NES
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wire [23:0] lumacode_data_3s[0:63] = '{ 24'h000000, 24'h000000, 24'h000000, 24'h000000, 24'h000000, 24'h000000, 24'h000000, 24'h000000,
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24'h626262, 24'h001fb2, 24'h2404c8, 24'h5200b2, 24'h730076, 24'h800024, 24'h730b00, 24'h522800, 24'h244400, 24'h005700, 24'h005c00, 24'h005324, 24'h003c76, 24'h000000,
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24'hababab, 24'h0d57ff, 24'h4b30ff, 24'h8a13ff, 24'hbc08d6, 24'hd21269, 24'hc72e00, 24'h9d5400, 24'h607b00, 24'h209800, 24'h00a300, 24'h009942, 24'h007db4, 24'h000000,
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24'hffffff, 24'h53aeff, 24'h9085ff, 24'hd365ff, 24'hff57ff, 24'hff5dcf, 24'hff7757, 24'hfa9e00, 24'hbdc700, 24'h7ae700, 24'h43f611, 24'h26ef7e, 24'h2cd5f6, 24'h4e4e4e,
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24'hffffff, 24'hb6e1ff, 24'hced1ff, 24'he9c3ff, 24'hffbcff, 24'hffbdf4, 24'hffc6c3, 24'hffd59a, 24'he9e681, 24'hcef481, 24'hb6fb9a, 24'ha9fac3, 24'ha9f0f4, 24'hb8b8b8};
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wire [7:0] lumacode_data_3s_R = lumacode_data_3s[{lc_code[1], lc_code[2], lc_code[3]}][23:16];
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wire [7:0] lumacode_data_3s_G = lumacode_data_3s[{lc_code[1], lc_code[2], lc_code[3]}][15:8];
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wire [7:0] lumacode_data_3s_B = lumacode_data_3s[{lc_code[1], lc_code[2], lc_code[3]}][7:0];
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// SOF position for scaler
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wire [10:0] V_SOF_LINE = hv_in_config3[23:13];
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@ -243,17 +258,56 @@ end
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// Pipeline stage 2
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always @(posedge PCLK_i) begin
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// Lumacode
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// Lumacode sample aggregation
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if (h_ctr == H_SAMPLE_SEL) begin
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lumacode_msbs <= G_pp[1][7:6];
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end else if (h_ctr == H_SAMPLE_SEL_ALT) begin
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lumacode_lsbs <= G_pp[1][7:6];
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lc_code[1] <= G_pp[1][7:6];
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lc_cnt <= 0;
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lc_ctr <= 0;
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end else if (lc_ctr == LC_H_SKIP) begin
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lc_code[2+lc_cnt] <= G_pp[1][7:6];
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lc_cnt <= lc_cnt + 1;
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lc_ctr <= 0;
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end else begin
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lc_ctr <= lc_ctr + 1;
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end
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if (MISC_LUMACODE_MODE == 2'h0) begin
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// Standard output
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if (MISC_LUMACODE_MODE == '0) begin
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{R_pp[2], G_pp[2], B_pp[2]} <= {R_pp[1], G_pp[1], B_pp[1]};
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// Lumacode C64, C128, VIC20, Spectrum, TMS99xxA
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end else if (MISC_LUMACODE_MODE <= 3) begin
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{R_pp[2], G_pp[2], B_pp[2]} <= lumacode_data_2s[MISC_LUMACODE_MODE-1'b1][{lc_code[1], lc_code[2]}];
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// Lumacode NES
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end else if (MISC_LUMACODE_MODE == 4) begin
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if (lc_emp_nes[1] & lc_emp_nes[0])
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R_pp[2] <= lumacode_data_3s_R/2;
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else if (lc_emp_nes[1] | lc_emp_nes[0])
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R_pp[2] <= lumacode_data_3s_R - lumacode_data_3s_R/4;
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else
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R_pp[2] <= lumacode_data_3s_R;
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if (lc_emp_nes[2] & lc_emp_nes[0])
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G_pp[2] <= lumacode_data_3s_G/2;
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else if (lc_emp_nes[2] | lc_emp_nes[0])
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G_pp[2] <= lumacode_data_3s_G - lumacode_data_3s_G/4;
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else
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G_pp[2] <= lumacode_data_3s_G;
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if (lc_emp_nes[2] & lc_emp_nes[1])
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B_pp[2] <= lumacode_data_3s_B/2;
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else if (lc_emp_nes[2] | lc_emp_nes[1])
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B_pp[2] <= lumacode_data_3s_B - lumacode_data_3s_B/4;
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else
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B_pp[2] <= lumacode_data_3s_B;
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if ((h_ctr == H_SAMPLE_SEL) & ({lc_code[1], lc_code[2], lc_code[3]} < 8))
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lc_emp_nes <= {lc_code[2][0], lc_code[3]};
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// TODO: Lumacode VCS
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end else if (MISC_LUMACODE_MODE == 5) begin
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{R_pp[2], G_pp[2], B_pp[2]} <= '0;
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// TODO: Lumacode Atari 8-bit
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end else begin
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{R_pp[2], G_pp[2], B_pp[2]} <= lumacode_data[MISC_LUMACODE_MODE-1'b1][lumacode];
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{R_pp[2], G_pp[2], B_pp[2]} <= '0;
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end
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HSYNC_pp[2] <= HSYNC_pp[1];
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