uzix/TSConf_MiST
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mouse: add scroll support

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This commit is contained in:
Eugene Lozovoy
2024-09-24 23:45:27 +03:00
parent e4554d1e58
commit 858e4a2a61
3 changed files with 13 additions and 8 deletions
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11
rtl/periph/kempston_mouse.v
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@ -24,7 +24,7 @@ module kempston_mouse
input clk_sys,
input reset,
input [24:0] ps2_mouse,
input [28:0] ps2_mouse,
input [2:0] addr,
output sel,
@ -36,6 +36,7 @@ assign sel = port_sel;
reg [11:0] dx;
reg [11:0] dy;
reg [3:0] dz;
reg [7:0] data;
reg port_sel;
@ -44,22 +45,24 @@ always @* begin
casex(addr)
3'b011: data = dx[7:0];
3'b111: data = dy[7:0];
3'bX10: data = ~{5'b00000,ps2_mouse[2], ps2_mouse[0], ps2_mouse[1]} ;
3'bX10: data = {dz, 1'b1, ~ps2_mouse[2:0]};
default: {port_sel,data} = 8'hFF;
endcase
end
always @(posedge clk_sys) begin
reg old_status;
old_status <= ps2_mouse[24];
old_status <= ps2_mouse[28];
if(reset) begin
dx <= 128; // dx != dy for better mouse detection
dy <= 0;
dz <= 4'b1111;
end
else if(old_status != ps2_mouse[24]) begin
else if(old_status != ps2_mouse[28]) begin
dx <= dx + {{4{ps2_mouse[4]}},ps2_mouse[15:8]};
dy <= dy + {{4{ps2_mouse[5]}},ps2_mouse[23:16]};
dz <= dz - ps2_mouse[27:24];
end
end

2
rtl/tsconf.v
View File

@ -60,7 +60,7 @@ module tsconf
// User input
input [10:0] PS2_KEY,
input [24:0] PS2_MOUSE,
input [28:0] PS2_MOUSE,
input [7:0] JOYSTICK1,
input [7:0] JOYSTICK2,