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Keyboard tweaks/fixes.

This commit is contained in:
Sorgelig 2022-03-07 20:22:42 +08:00
parent 9f2ac6ab76
commit ea9c50291c
1 changed files with 23 additions and 32 deletions
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55
rtl/ps2_kbd.sv
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@ -89,52 +89,43 @@ wire pop_key = (cmd_instant & tick_short) | (inquiry_active & tick_long) | (inqu
assign strobe_in = ((cmd_model | cmd_test) & tick_short) | pop_key;
/* Data to Mac */
assign data_in = cmd_test ? 8'h7d :
cmd_model ? 8'h03 :
key_pending ? (keymac[8] ? 8'h79 : keymac[7:0]) :
8'h7b;
assign data_in = cmd_test ? 8'h7d :
cmd_model ? 8'h03 :
key_pending ? (keymac[8] ? 8'h79 : keymac[7:0]) :
8'h7b;
wire depress = ~ps2_key[9];
wire extended = ps2_key[8];
wire ignore_capslock = {extended,ps2_key[7:0]} == 9'h058 && capslock;
wire press = ps2_key[9];
wire capslock_key = (ps2_key[8:0] == 'h58);
/* Handle key_pending, and multi-byte keypad responses */
always @(posedge clk) begin
reg old_stb;
if (reset) begin
key_pending <= 0;
if(ce) begin
old_stb <= ps2_key[10];
capslock <= 0;
end
else if(ce) begin
if (cmd_model | cmd_test) key_pending <= 0;
else if (pop_key) begin
if (keymac[8]) keymac[8] <= 0;
else key_pending <= 0;
end else begin
old_stb <= ps2_key[10];
if(old_stb != ps2_key[10]) begin
/* Capslock handling */
if(ps2_key[7:0] == 8'h58 && !extended && !depress) capslock <= ~capslock;
if(!key_pending && !ignore_capslock) begin
key_pending <= 1;
keymac <= {key_code[8],depress,key_code[6:0]};
end
if(old_stb != ps2_key[10]) begin
/* Capslock handling */
if(capslock_key && press) capslock <= ~capslock;
if(!key_pending && !(capslock_key && capslock)) begin
key_pending <= 1;
keymac <= {key_code[8],~press,key_code[6:0]};
end
end
if (pop_key) begin
if (keymac[8]) keymac[8] <= 0;
else key_pending <= 0;
end
end
if (cmd_model | cmd_test | reset) key_pending <= 0;
if (reset) capslock <= 0;
end
//use BRAM for table
wire [8:0] key_code = code[key_addr];
reg [8:0] key_addr;
always @(posedge clk) key_addr <= {extended,ps2_key[7:0]};
wire [8:0] key_code = code[ps2_key[8:0]];
wire [8:0] code[512] =
'{
/* 000 */ 9'h07b,