mirror of
https://github.com/UzixLS/zx-sizif-xxs.git
synced 2025-07-19 07:11:28 +03:00
some minor refactoring
This commit is contained in:
UzixLS
146
fpga/rtl/top.sv
146
fpga/rtl/top.sv
@ -29,8 +29,8 @@ module zx_ula(
|
||||
output snd_l,
|
||||
output snd_r,
|
||||
|
||||
inout reg ps2_clk,
|
||||
inout reg ps2_dat,
|
||||
input ps2_clk,
|
||||
input ps2_dat,
|
||||
|
||||
input sd_cd,
|
||||
input sd_miso_tape_in,
|
||||
@ -47,10 +47,18 @@ wire rst_n;
|
||||
pll pll0(.inclk0(clk_in), .c0(clk40), .c1(clk20), .locked(rst_n));
|
||||
|
||||
|
||||
/* REGISTER DEFINITIONS */
|
||||
/* SHARED DEFINITIONS */
|
||||
timings_t timings;
|
||||
turbo_t turbo;
|
||||
wire ps2_key_pause, ps2_key_reset;
|
||||
wire pause = ps2_key_pause;
|
||||
wire [2:0] border;
|
||||
wire magic_beeper;
|
||||
wire up_en;
|
||||
wire clkwait;
|
||||
wire [2:0] rampage128;
|
||||
wire div_wait;
|
||||
wire init_done;
|
||||
wire screen_fetch, screen_fetch_next;
|
||||
|
||||
|
||||
@ -87,42 +95,18 @@ assign bus.ioreq = bus_ioreq & ~n_iorq;
|
||||
assign bus.memreq = bus_memreq & ~n_mreq;
|
||||
|
||||
|
||||
/* KEYBOARD */
|
||||
reg ps2_clk_out, ps2_dat_out;
|
||||
reg [4:0] ps2_kd;
|
||||
reg key_magic, key_reset, pause;
|
||||
wire usrrst_n = ~key_reset;
|
||||
reg joy_up, joy_down, joy_left, joy_right, joy_fire;
|
||||
ps2 #(.CLK_FREQ(28_000_000)) ps2_0(
|
||||
.rst_n(rst_n),
|
||||
.clk(clk28),
|
||||
.ps2_clk_in(ps2_clk),
|
||||
.ps2_dat_in(ps2_dat),
|
||||
.ps2_clk_out(ps2_clk_out),
|
||||
.ps2_dat_out(ps2_dat_out),
|
||||
.zxkb_addr(bus.a_reg[15:8]),
|
||||
.zxkb_data(ps2_kd),
|
||||
.key_magic(key_magic),
|
||||
.key_reset(key_reset),
|
||||
.key_pause(pause),
|
||||
.joy_up(joy_up),
|
||||
.joy_down(joy_down),
|
||||
.joy_left(joy_left),
|
||||
.joy_right(joy_right),
|
||||
.joy_fire(joy_fire)
|
||||
);
|
||||
assign ps2_clk = (ps2_clk_out == 0)? 1'b0 : 1'bz;
|
||||
assign ps2_dat = (ps2_dat_out == 0)? 1'b0 : 1'bz;
|
||||
/* RESET */
|
||||
reg usrrst_n = 0;
|
||||
always @(posedge clk28)
|
||||
usrrst_n <= (!rst_n || ps2_key_reset)? 1'b0 : 1'b1;
|
||||
|
||||
|
||||
|
||||
/* SCREEN CONTROLLER */
|
||||
reg [2:0] border;
|
||||
reg magic_beeper;
|
||||
wire blink;
|
||||
wire [2:0] screen_border = {border[2] ^ ~sd_cs, border[1] ^ magic_beeper, border[0] ^ (pause & blink)};
|
||||
reg [2:0] r, g, b;
|
||||
reg hsync;
|
||||
reg up_en;
|
||||
wire [2:0] r, g, b;
|
||||
wire hsync;
|
||||
wire [5:0] up_ink_addr, up_paper_addr;
|
||||
wire [7:0] up_ink, up_paper;
|
||||
wire screen_loading;
|
||||
@ -134,10 +118,6 @@ screen screen0(
|
||||
.rst_n(rst_n),
|
||||
.clk28(clk28),
|
||||
|
||||
.bus(bus),
|
||||
.addr(screen_addr),
|
||||
|
||||
.clkwait(clkwait),
|
||||
.timings(timings),
|
||||
.border(screen_border),
|
||||
|
||||
@ -148,10 +128,14 @@ screen screen0(
|
||||
.vsync(),
|
||||
.hsync(hsync),
|
||||
|
||||
.blink(blink),
|
||||
.fetch_allow((!bus.iorq && !bus.mreq && !bus.m1) || bus.rfsh || clkwait),
|
||||
.fetch(screen_fetch),
|
||||
.addr(screen_addr),
|
||||
.fetch_next(screen_fetch_next),
|
||||
.fetch_data(bus.d),
|
||||
|
||||
.loading(screen_loading),
|
||||
.blink(blink),
|
||||
.attr_next(attr_next),
|
||||
|
||||
.up_en(up_en),
|
||||
@ -175,7 +159,7 @@ screen screen0(
|
||||
always @*
|
||||
luma <= {g[2], r[2], b[2], g[1], r[1], b[1]};
|
||||
|
||||
reg [2:0] chroma0;
|
||||
wire [2:0] chroma0;
|
||||
chroma_gen #(.CLK_FREQ(40_000_000)) chroma_gen1(
|
||||
.cg_clock(clk40),
|
||||
.cg_rgb({g[2],r[2],b[2]}),
|
||||
@ -189,14 +173,32 @@ assign chroma[1] = (chroma0[2]|chroma0[1])? chroma0[0] : 1'bz;
|
||||
assign chroma[2] = (chroma0[2]|chroma0[1])? chroma0[0] : 1'bz;
|
||||
|
||||
|
||||
/* PS/2 KEYBOARD */
|
||||
wire [4:0] ps2_kd;
|
||||
wire ps2_key_magic;
|
||||
wire ps2_joy_up, ps2_joy_down, ps2_joy_left, ps2_joy_right, ps2_joy_fire;
|
||||
ps2 #(.CLK_FREQ(28_000_000)) ps2_0(
|
||||
.rst_n(rst_n),
|
||||
.clk(clk28),
|
||||
.ps2_clk_in(ps2_clk),
|
||||
.ps2_dat_in(ps2_dat),
|
||||
.zxkb_addr(bus.a_reg[15:8]),
|
||||
.zxkb_data(ps2_kd),
|
||||
.key_magic(ps2_key_magic),
|
||||
.key_reset(ps2_key_reset),
|
||||
.key_pause(ps2_key_pause),
|
||||
.joy_up(ps2_joy_up),
|
||||
.joy_down(ps2_joy_down),
|
||||
.joy_left(ps2_joy_left),
|
||||
.joy_right(ps2_joy_right),
|
||||
.joy_fire(ps2_joy_fire)
|
||||
);
|
||||
|
||||
|
||||
/* CPU CONTROLLER */
|
||||
reg [2:0] rampage128;
|
||||
wire div_wait;
|
||||
logic n_int_next;
|
||||
wire snow, clkcpu_ck;
|
||||
wire init_done;
|
||||
wire n_int_next, clkcpu_ck, snow;
|
||||
cpucontrol cpucontrol0(
|
||||
.rst_n(rst_n & usrrst_n),
|
||||
.rst_n(usrrst_n),
|
||||
.clk28(clk28),
|
||||
.clk14(clk14),
|
||||
.clk7(clk7),
|
||||
@ -225,12 +227,11 @@ cpucontrol cpucontrol0(
|
||||
|
||||
|
||||
/* MAGIC */
|
||||
reg magic_mode, magic_map;
|
||||
wire magic_mode, magic_map;
|
||||
wire magic_active_next;
|
||||
reg n_nmi0;
|
||||
reg extlock, joy_sinclair, rom_plus3, rom_alt48, ay_abc, ay_mono;
|
||||
wire extlock, joy_sinclair, rom_plus3, rom_alt48, ay_abc, ay_mono;
|
||||
magic magic0(
|
||||
.rst_n(rst_n & usrrst_n),
|
||||
.rst_n(usrrst_n),
|
||||
.clk28(clk28),
|
||||
|
||||
.bus(bus),
|
||||
@ -238,7 +239,7 @@ magic magic0(
|
||||
.n_int_next(n_int_next),
|
||||
.n_nmi(n_nmi),
|
||||
|
||||
.magic_button(key_magic),
|
||||
.magic_button(ps2_key_magic),
|
||||
|
||||
.magic_mode(magic_mode),
|
||||
.magic_map(magic_map),
|
||||
@ -259,15 +260,15 @@ magic magic0(
|
||||
/* PORTS */
|
||||
wire [7:0] ports_dout;
|
||||
wire ports_dout_active;
|
||||
reg beeper, tape_out;
|
||||
reg screenpage;
|
||||
reg rompage128;
|
||||
reg [3:0] rampage_ext;
|
||||
reg [2:0] port_1ffd;
|
||||
reg port_dffd_d3;
|
||||
reg port_dffd_d4;
|
||||
wire beeper, tape_out;
|
||||
wire screenpage;
|
||||
wire rompage128;
|
||||
wire [3:0] rampage_ext;
|
||||
wire [2:0] port_1ffd;
|
||||
wire port_dffd_d3;
|
||||
wire port_dffd_d4;
|
||||
ports ports0 (
|
||||
.rst_n(rst_n & usrrst_n),
|
||||
.rst_n(usrrst_n),
|
||||
.clk28(clk28),
|
||||
|
||||
.bus(bus),
|
||||
@ -280,19 +281,19 @@ ports ports0 (
|
||||
.en_kempston(!joy_sinclair),
|
||||
.en_sinclair(joy_sinclair),
|
||||
|
||||
.clkcpu_ck(clkcpu_ck),
|
||||
.timings(timings),
|
||||
.clkcpu_ck(clkcpu_ck),
|
||||
.screen_loading(screen_loading),
|
||||
.attr_next(attr_next),
|
||||
.kd(ps2_kd),
|
||||
.kempston_data({3'b000, joy_fire, joy_up, joy_down, joy_left, joy_right}),
|
||||
.kempston_data({3'b000, ps2_joy_fire, ps2_joy_up, ps2_joy_down, ps2_joy_left, ps2_joy_right}),
|
||||
.magic_active_next(magic_active_next),
|
||||
.tape_in(sd_miso_tape_in),
|
||||
|
||||
.tape_out(tape_out),
|
||||
.beeper(beeper),
|
||||
.border(border),
|
||||
.screen_page(screenpage),
|
||||
.screenpage(screenpage),
|
||||
.rompage128(rompage128),
|
||||
.rampage128(rampage128),
|
||||
.rampage_ext(rampage_ext),
|
||||
@ -307,7 +308,7 @@ wire turbosound_dout_active;
|
||||
wire [7:0] turbosound_dout;
|
||||
wire [7:0] ay_a0, ay_b0, ay_c0, ay_a1, ay_b1, ay_c1;
|
||||
turbosound turbosound0(
|
||||
.rst_n(rst_n & usrrst_n),
|
||||
.rst_n(usrrst_n),
|
||||
.clk28(clk28),
|
||||
.ck35(ck35),
|
||||
.en(1'b1),
|
||||
@ -328,9 +329,9 @@ turbosound turbosound0(
|
||||
|
||||
|
||||
/* COVOX & SOUNDRIVE */
|
||||
reg [7:0] soundrive_l0, soundrive_l1, soundrive_r0, soundrive_r1;
|
||||
wire [7:0] soundrive_l0, soundrive_l1, soundrive_r0, soundrive_r1;
|
||||
soundrive soundrive0(
|
||||
.rst_n(rst_n & usrrst_n),
|
||||
.rst_n(usrrst_n),
|
||||
.clk28(clk28),
|
||||
.en_covox(!extlock),
|
||||
.en_soundrive(!extlock),
|
||||
@ -374,27 +375,26 @@ mixer mixer0(
|
||||
/* DIVMMC */
|
||||
wire div_map, div_ram, div_ramwr_mask, div_dout_active;
|
||||
wire [7:0] div_dout;
|
||||
reg [3:0] div_page;
|
||||
reg sd_mosi0;
|
||||
wire [3:0] div_page;
|
||||
wire sd_mosi0;
|
||||
divmmc divmmc0(
|
||||
.rst_n(rst_n & usrrst_n),
|
||||
.rst_n(usrrst_n),
|
||||
.clk28(clk28),
|
||||
.ck14(ck14),
|
||||
.ck7(ck7),
|
||||
.en(!extlock),
|
||||
.en_hooks(~sd_cd),
|
||||
|
||||
.bus(bus),
|
||||
.d_out(div_dout),
|
||||
.d_out_active(div_dout_active),
|
||||
|
||||
.sd_cd(sd_cd),
|
||||
.sd_miso(sd_miso_tape_in),
|
||||
.sd_mosi(sd_mosi0),
|
||||
.sd_sck(sd_sck),
|
||||
.sd_cs(sd_cs),
|
||||
|
||||
.port_dffd_d4(port_dffd_d4),
|
||||
.port_1ffd_d0(port_1ffd[0]),
|
||||
|
||||
.rammap(port_dffd_d4 | port_1ffd[0]),
|
||||
.magic_mode(magic_mode),
|
||||
.magic_map(magic_map),
|
||||
|
||||
@ -412,7 +412,7 @@ assign sd_mosi = sd_mosi0;
|
||||
wire up_dout_active;
|
||||
wire [7:0] up_dout;
|
||||
ulaplus ulaplus0(
|
||||
.rst_n(rst_n & usrrst_n),
|
||||
.rst_n(usrrst_n),
|
||||
.clk28(clk28),
|
||||
.en(!extlock),
|
||||
|
||||
|
||||
Reference in New Issue
Block a user