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MacPlus_MiSTer/rtl/adb.sv

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/* ADB implementation for plus_too */
module adb(
input clk,
input clk_en,
input reset,
input [1:0] st,
output _int,
input viaBusy,
output reg listen,
input [7:0] adb_din,
input adb_din_strobe,
output reg [7:0] adb_dout,
output reg adb_dout_strobe,
output reg capslock,
input [24:0] ps2_mouse,
input [10:0] ps2_key
);
localparam TALKINTERVAL = 17'd8000*4'd11; // 11 ms
reg [3:0] cmd_r;
reg [1:0] st_r;
wire [1:0] r_r = cmd_r[1:0];
reg [3:0] addr_r;
reg [3:0] respCnt;
reg [16:0] talkTimer;
reg idleActive;
wire [3:0] cmd = adb_din[3:0];
wire [3:0] addr = adb_din[7:4];
reg sendResponse;
always @(posedge clk) begin
if (reset) begin
respCnt <= 0;
idleActive <= 0;
cmd_r <= 0;
listen <= 0;
sendResponse <= 0;
end else if (clk_en) begin
st_r <= st;
adb_dout_strobe <= 0;
sendResponse <= 0;
case (st)
2'b00: // new command
begin
if (st_r != 2'b00)
listen <= 1;
respCnt <= 0;
if (adb_din_strobe) begin
idleActive <= 1;
cmd_r <= cmd;
addr_r <= addr;
listen <= 0;
if (addr_r != addr || cmd_r != cmd)
talkTimer <= 0;
else
talkTimer <= TALKINTERVAL;
end
end
2'b01, 2'b10: // even byte, odd byte
begin
// Reset, flush, talk
if (!viaBusy && (cmd_r[3:1] == 0 || cmd_r[3:2] == 2'b11) && respCnt[0] == st[1]) begin
sendResponse <= 1;
respCnt <= respCnt + 1'd1;
end
if (sendResponse) begin
adb_dout <= adbReg;
adb_dout_strobe <= 1;
end
// Listen
if (st_r != st) listen <= cmd_r[3:2] == 2'b10;
if (cmd_r[3:2] == 2'b10 && respCnt[0] == st[1]) begin
if (adb_din_strobe) begin
listen <= 0;
respCnt <= respCnt + 1'd1;
// Listen : it's handled in the device specific part
// The Listen command is to write to registers, some use cases:
// - device ID and device handler writes
// - LED status for the keyboard
end
end
end
2'b11: // idle
begin
if (cmd_r[3:2] == 2'b11 && idleActive) begin
if (talkTimer != 0)
talkTimer <= talkTimer - 1'd1;
else begin
adb_dout <= 8'hFF;
adb_dout_strobe <= 1;
talkTimer <= TALKINTERVAL;
idleActive <= 0;
end
end
end
default: ;
endcase
end
end
// Device handlers
wire [3:0] addrKeyboard = kbdReg3[11:8];
wire [3:0] addrMouse = mouseReg3[11:8];
wire mouseInt = (addr_r != addrMouse && mouseValid == 2'b01);
wire keyboardInt = (addr_r != addrKeyboard && (keyboardValid == 1 || keyboardValid == 2));
wire irq = mouseInt | keyboardInt | !adbValid;
wire int_inhibit = respCnt < 3 &&
((addr_r == addrMouse && mouseValid == 2'b01) ||
(addr_r == addrKeyboard && (keyboardValid == 1 || keyboardValid == 2)));
assign _int = ~(irq && (st == 2'b01 || st == 2'b10)) | int_inhibit;
// Mouse handler
reg [15:0] mouseReg3;
reg [6:0] X,Y;
reg [1:0] mouseValid;
reg mstb;
always @(posedge clk) if (clk_en) mstb <= ps2_mouse[24];
wire mouseStrobe = mstb ^ ps2_mouse[24];
wire [8:0] mouseX = {ps2_mouse[4], ps2_mouse[15:8]};
wire [8:0] mouseY = {ps2_mouse[5], ps2_mouse[23:16]};
wire button = ps2_mouse[0];
always @(posedge clk) begin
if (reset || cmd_r == 0) begin
mouseReg3 <= 16'h6301; // device id: 3 device handler id: 1
X <= 0;
Y <= 0;
mouseValid <= 0;
end else if (clk_en) begin
if (mouseStrobe) begin
if (~mouseX[8] & |mouseX[7:6]) X <= 7'h3F;
else if (mouseX[8] & ~mouseX[6]) X <= 7'h40;
else X <= mouseX[6:0];
if (~mouseY[8] & |mouseY[7:6]) Y <= 7'h40;
else if (mouseY[8] & ~mouseY[6]) Y <= 7'h3F;
else Y <= -mouseY[6:0];
mouseValid <= 2'b01;
end
if (addr_r == addrMouse) begin
if (mouseValid == 2'b01 && respCnt == 3)
// mouse data sent
mouseValid <= 2'b10;
if ((mouseValid == 2'b10 && st == 2'b00) || cmd_r == 4'b0001) begin
// Flush mouse data after read or flush command
mouseValid <= 0;
X <= 0;
Y <= 0;
end
end
end
end
// Keyboard handler
reg [1:0] keyboardValid;
reg [15:0] kbdReg0;
reg [15:0] kbdReg2;
reg [15:0] kbdReg3;
reg [7:0] kbdFifo[8];
reg [2:0] kbdFifoRd, kbdFifoWr;
always @(posedge clk) begin
if (reset || cmd_r == 0) begin
kbdReg0 <= 16'hFFFF;
kbdReg2 <= 16'hFFFF;
kbdReg3 <= 16'h6202; // device id: 2 device handler id: 2
keyboardValid <= 0;
kbdFifoRd <= 0;
kbdFifoWr <= 0;
end else if (clk_en) begin
if (keyStrobe && keyData[6:0] != 7'h7F) begin
// Store the keypress in the FIFO
kbdFifo[kbdFifoWr] <= keyData;
kbdFifoWr <= kbdFifoWr + 1'd1;
end
if (kbdFifoWr != kbdFifoRd && st == 2'b11 && keyboardValid < 2) begin
// Read the FIFO when no other key processing in progress
if (kbdReg0[6:0] == kbdFifo[kbdFifoRd][6:0])
kbdReg0[7:0] <= kbdFifo[kbdFifoRd];
else if (kbdReg0[14:8] == kbdFifo[kbdFifoRd][6:0])
kbdReg0[15:8] <= kbdFifo[kbdFifoRd];
else if (kbdReg0[7:0] == 8'hFF)
kbdReg0[7:0] <= kbdFifo[kbdFifoRd];
else
kbdReg0[15:8] <= kbdFifo[kbdFifoRd];
// kbdReg0 has a valid key
keyboardValid <= keyboardValid + 1'd1;
kbdFifoRd <= kbdFifoRd + 1'd1;
end
if (addr_r == addrKeyboard) begin
if (cmd_r == 4'b1010 && adb_din_strobe && st[1]^st[0]) begin
// write into reg2 (keyboard LEDs)
if (respCnt == 1) kbdReg2[2:0] <= adb_din[2:0];
end
if (keyboardValid != 0 && respCnt == 2)
// Beginning of keyboard data read
keyboardValid <= 2'd3;
if ((keyboardValid == 3 && st == 2'b00) || cmd_r == 4'b0001) begin
// Flush keyboard data after read or flush command
keyboardValid <= 0;
kbdReg0 <= 16'hFFFF;
if (cmd_r == 4'b0001) begin
// Flush
kbdFifoRd <= 0;
kbdFifoWr <= 0;
end
end
end
end
end
// Register 0 in the Apple Standard Mouse
// Bit Meaning
// 15 Button status; 0 = down
// 14-8 Y move counts'
// 7 Not used (always 1)
// 6-0 X move counts
// Register 0 in the Apple Standard Keyboard
// Bit Meaning
// 15 Key status for first key; 0 = down
// 14-8 Key code for first key; a 7-bit ASCII value
// 7 Key status for second key; 0 = down
// 6-0 Key code for second key; a 7-bit ASCII value
// Register 2 in the Apple Extended Keyboard
// Bit Key
// 15 None (reserved)
// 14 Delete
// 13 Caps Lock
// 12 Reset
// 11 Control
// 10 Shift
// 9 Option
// 8 Command
// 7 Num Lock/Clear
// 6 Scroll Lock
// 5-3 None (reserved)
// 2 LED 3 (Scroll Lock) *
// 1 LED 2 (Caps Lock) *
// 0 LED 1 (Num Lock) *
//
// *Changeable via Listen Register 2
// Register 3 (common for all devices):
// Bit Description
// 15 Reserved; must be 0
// 14 Exceptional event, device specific; always 1 if not used
// 13 Service Request enable; 1 = enabled
// 12 Reserved; must be 0
// 11-8 Device address
// 7-0 Device Handler ID
reg [7:0] adbReg;
reg adbValid;
reg [15:0] talkReg;
always @(*) begin
adbReg = 8'hFF;
adbValid = 0;
talkReg = 0;
if (addr_r == addrKeyboard) begin
if (cmd_r[3:1] == 0) begin
// reset
if (respCnt == 0) adbValid = 1;
end else begin
// talk
case (r_r)
2'b00: talkReg = kbdReg0;
2'b10: talkReg = kbdReg2;
2'b11: talkReg = kbdReg3;
default: ;
endcase
if (respCnt == 1) begin
adbReg = talkReg[15:8];
adbValid = 1;
end
if (respCnt == 2) begin
adbReg = talkReg[7:0];
adbValid = 1;
end
end
end else if (addr_r == addrMouse) begin
if (cmd_r[3:1] == 0) begin
// reset
if (respCnt == 0) adbValid = 1;
end else begin
// talk
case (r_r)
2'b00: talkReg = { ~button, Y, 1'b1, X };
2'b11: talkReg = mouseReg3;
default: ;
endcase
if (respCnt == 1) begin
adbReg = talkReg[15:8];
adbValid = 1;
end
if (respCnt == 2) begin
adbReg = talkReg[7:0];
adbValid = 1;
end
end
end
end
reg keyStrobe;
reg [7:0] keyData;
wire press = ps2_key[9];
wire capslock_key = (ps2_key[8:0] == 'h58);
always @(posedge clk) begin
reg kstb;
if (clk_en) begin
kstb <= ps2_key[10];
if (kstb ^ ps2_key[10]) begin
case(ps2_key[8:0]) // Scan Code Set 2
9'h000: keyData[6:0] <= 7'h7F;
9'h001: keyData[6:0] <= 7'h65; //F9
9'h002: keyData[6:0] <= 7'h7F;
9'h003: keyData[6:0] <= 7'h60; //F5
9'h004: keyData[6:0] <= 7'h63; //F3
9'h005: keyData[6:0] <= 7'h7A; //F1
9'h006: keyData[6:0] <= 7'h78; //F2
9'h007: keyData[6:0] <= 7'h7F;//7'h6F; //F12 <OSD>
9'h008: keyData[6:0] <= 7'h7F;
9'h009: keyData[6:0] <= 7'h6D; //F10
9'h00a: keyData[6:0] <= 7'h64; //F8
9'h00b: keyData[6:0] <= 7'h61; //F6
9'h00c: keyData[6:0] <= 7'h76; //F4
9'h00d: keyData[6:0] <= 7'h30; //TAB
9'h00e: keyData[6:0] <= 7'h32; //~ (`)
9'h00f: keyData[6:0] <= 7'h7F;
9'h010: keyData[6:0] <= 7'h7F;
9'h011: keyData[6:0] <= 7'h37; //LEFT ALT (command)
9'h012: keyData[6:0] <= 7'h38; //LEFT SHIFT
9'h013: keyData[6:0] <= 7'h7F;
9'h014: keyData[6:0] <= 7'h36; //CTRL
9'h015: keyData[6:0] <= 7'h0C; //q
9'h016: keyData[6:0] <= 7'h12; //1
9'h017: keyData[6:0] <= 7'h7F;
9'h018: keyData[6:0] <= 7'h7F;
9'h019: keyData[6:0] <= 7'h7F;
9'h01a: keyData[6:0] <= 7'h06; //z
9'h01b: keyData[6:0] <= 7'h01; //s
9'h01c: keyData[6:0] <= 7'h00; //a
9'h01d: keyData[6:0] <= 7'h0D; //w
9'h01e: keyData[6:0] <= 7'h13; //2
9'h01f: keyData[6:0] <= 7'h7F;
9'h020: keyData[6:0] <= 7'h7F;
9'h021: keyData[6:0] <= 7'h08; //c
9'h022: keyData[6:0] <= 7'h07; //x
9'h023: keyData[6:0] <= 7'h02; //d
9'h024: keyData[6:0] <= 7'h0E; //e
9'h025: keyData[6:0] <= 7'h15; //4
9'h026: keyData[6:0] <= 7'h14; //3
9'h027: keyData[6:0] <= 7'h7F;
9'h028: keyData[6:0] <= 7'h7F;
9'h029: keyData[6:0] <= 7'h31; //SPACE
9'h02a: keyData[6:0] <= 7'h09; //v
9'h02b: keyData[6:0] <= 7'h03; //f
9'h02c: keyData[6:0] <= 7'h11; //t
9'h02d: keyData[6:0] <= 7'h0F; //r
9'h02e: keyData[6:0] <= 7'h17; //5
9'h02f: keyData[6:0] <= 7'h7F;
9'h030: keyData[6:0] <= 7'h7F;
9'h031: keyData[6:0] <= 7'h2D; //n
9'h032: keyData[6:0] <= 7'h0B; //b
9'h033: keyData[6:0] <= 7'h04; //h
9'h034: keyData[6:0] <= 7'h05; //g
9'h035: keyData[6:0] <= 7'h10; //y
9'h036: keyData[6:0] <= 7'h16; //6
9'h037: keyData[6:0] <= 7'h7F;
9'h038: keyData[6:0] <= 7'h7F;
9'h039: keyData[6:0] <= 7'h7F;
9'h03a: keyData[6:0] <= 7'h2E; //m
9'h03b: keyData[6:0] <= 7'h26; //j
9'h03c: keyData[6:0] <= 7'h20; //u
9'h03d: keyData[6:0] <= 7'h1A; //7
9'h03e: keyData[6:0] <= 7'h1C; //8
9'h03f: keyData[6:0] <= 7'h7F;
9'h040: keyData[6:0] <= 7'h7F;
9'h041: keyData[6:0] <= 7'h2B; //<,
9'h042: keyData[6:0] <= 7'h28; //k
9'h043: keyData[6:0] <= 7'h22; //i
9'h044: keyData[6:0] <= 7'h1F; //o
9'h045: keyData[6:0] <= 7'h1D; //0
9'h046: keyData[6:0] <= 7'h19; //9
9'h047: keyData[6:0] <= 7'h7F;
9'h048: keyData[6:0] <= 7'h7F;
9'h049: keyData[6:0] <= 7'h2F; //>.
9'h04a: keyData[6:0] <= 7'h2C; //FORWARD SLASH
9'h04b: keyData[6:0] <= 7'h25; //l
9'h04c: keyData[6:0] <= 7'h29; //;
9'h04d: keyData[6:0] <= 7'h23; //p
9'h04e: keyData[6:0] <= 7'h1B; //-
9'h04f: keyData[6:0] <= 7'h7F;
9'h050: keyData[6:0] <= 7'h7F;
9'h051: keyData[6:0] <= 7'h7F;
9'h052: keyData[6:0] <= 7'h27; //'"
9'h053: keyData[6:0] <= 7'h7F;
9'h054: keyData[6:0] <= 7'h21; //[
9'h055: keyData[6:0] <= 7'h18; // =
9'h056: keyData[6:0] <= 7'h7F;
9'h057: keyData[6:0] <= 7'h7F;
9'h058: keyData[6:0] <= 7'h39; //CAPSLOCK
9'h059: keyData[6:0] <= 7'h7B; //RIGHT SHIFT
9'h05a: keyData[6:0] <= 7'h24; //ENTER
9'h05b: keyData[6:0] <= 7'h1E; //]
9'h05c: keyData[6:0] <= 7'h7F;
9'h05d: keyData[6:0] <= 7'h2A; //BACKSLASH
9'h05e: keyData[6:0] <= 7'h7F;
9'h05f: keyData[6:0] <= 7'h7F;
9'h060: keyData[6:0] <= 7'h7F;
9'h061: keyData[6:0] <= 7'h7F; //international left shift cut out (German '<>' key), 0x56 Set#1 code
9'h062: keyData[6:0] <= 7'h7F;
9'h063: keyData[6:0] <= 7'h7F;
9'h064: keyData[6:0] <= 7'h7F;
9'h065: keyData[6:0] <= 7'h7F;
9'h066: keyData[6:0] <= 7'h33; //BACKSPACE
9'h067: keyData[6:0] <= 7'h7F;
9'h068: keyData[6:0] <= 7'h7F;
9'h069: keyData[6:0] <= 7'h53; //KP 1
9'h06a: keyData[6:0] <= 7'h7F;
9'h06b: keyData[6:0] <= 7'h56; //KP 4
9'h06c: keyData[6:0] <= 7'h59; //KP 7
9'h06d: keyData[6:0] <= 7'h7F;
9'h06e: keyData[6:0] <= 7'h7F;
9'h06f: keyData[6:0] <= 7'h7F;
9'h070: keyData[6:0] <= 7'h52; //KP 0
9'h071: keyData[6:0] <= 7'h41; //KP .
9'h072: keyData[6:0] <= 7'h54; //KP 2
9'h073: keyData[6:0] <= 7'h57; //KP 5
9'h074: keyData[6:0] <= 7'h58; //KP 6
9'h075: keyData[6:0] <= 7'h5B; //KP 8
9'h076: keyData[6:0] <= 7'h35; //ESCAPE
9'h077: keyData[6:0] <= 7'h47; //NUMLOCK (Mac keypad clear?)
9'h078: keyData[6:0] <= 7'h67; //F11 <OSD>
9'h079: keyData[6:0] <= 7'h45; //KP +
9'h07a: keyData[6:0] <= 7'h55; //KP 3
9'h07b: keyData[6:0] <= 7'h4E; //KP -
9'h07c: keyData[6:0] <= 7'h43; //KP *
9'h07d: keyData[6:0] <= 7'h5C; //KP 9
9'h07e: keyData[6:0] <= 7'h7F; //SCROLL LOCK / KP )
9'h07f: keyData[6:0] <= 7'h7F;
9'h080: keyData[6:0] <= 7'h7F;
9'h081: keyData[6:0] <= 7'h7F;
9'h082: keyData[6:0] <= 7'h7F;
9'h083: keyData[6:0] <= 7'h62; //F7
9'h084: keyData[6:0] <= 7'h7F;
9'h085: keyData[6:0] <= 7'h7F;
9'h086: keyData[6:0] <= 7'h7F;
9'h087: keyData[6:0] <= 7'h7F;
9'h088: keyData[6:0] <= 7'h7F;
9'h089: keyData[6:0] <= 7'h7F;
9'h08a: keyData[6:0] <= 7'h7F;
9'h08b: keyData[6:0] <= 7'h7F;
9'h08c: keyData[6:0] <= 7'h7F;
9'h08d: keyData[6:0] <= 7'h7F;
9'h08e: keyData[6:0] <= 7'h7F;
9'h08f: keyData[6:0] <= 7'h7F;
9'h090: keyData[6:0] <= 7'h7F;
9'h091: keyData[6:0] <= 7'h7F;
9'h092: keyData[6:0] <= 7'h7F;
9'h093: keyData[6:0] <= 7'h7F;
9'h094: keyData[6:0] <= 7'h7F;
9'h095: keyData[6:0] <= 7'h7F;
9'h096: keyData[6:0] <= 7'h7F;
9'h097: keyData[6:0] <= 7'h7F;
9'h098: keyData[6:0] <= 7'h7F;
9'h099: keyData[6:0] <= 7'h7F;
9'h09a: keyData[6:0] <= 7'h7F;
9'h09b: keyData[6:0] <= 7'h7F;
9'h09c: keyData[6:0] <= 7'h7F;
9'h09d: keyData[6:0] <= 7'h7F;
9'h09e: keyData[6:0] <= 7'h7F;
9'h09f: keyData[6:0] <= 7'h7F;
9'h0a0: keyData[6:0] <= 7'h7F;
9'h0a1: keyData[6:0] <= 7'h7F;
9'h0a2: keyData[6:0] <= 7'h7F;
9'h0a3: keyData[6:0] <= 7'h7F;
9'h0a4: keyData[6:0] <= 7'h7F;
9'h0a5: keyData[6:0] <= 7'h7F;
9'h0a6: keyData[6:0] <= 7'h7F;
9'h0a7: keyData[6:0] <= 7'h7F;
9'h0a8: keyData[6:0] <= 7'h7F;
9'h0a9: keyData[6:0] <= 7'h7F;
9'h0aa: keyData[6:0] <= 7'h7F;
9'h0ab: keyData[6:0] <= 7'h7F;
9'h0ac: keyData[6:0] <= 7'h7F;
9'h0ad: keyData[6:0] <= 7'h7F;
9'h0ae: keyData[6:0] <= 7'h7F;
9'h0af: keyData[6:0] <= 7'h7F;
9'h0b0: keyData[6:0] <= 7'h7F;
9'h0b1: keyData[6:0] <= 7'h7F;
9'h0b2: keyData[6:0] <= 7'h7F;
9'h0b3: keyData[6:0] <= 7'h7F;
9'h0b4: keyData[6:0] <= 7'h7F;
9'h0b5: keyData[6:0] <= 7'h7F;
9'h0b6: keyData[6:0] <= 7'h7F;
9'h0b7: keyData[6:0] <= 7'h7F;
9'h0b8: keyData[6:0] <= 7'h7F;
9'h0b9: keyData[6:0] <= 7'h7F;
9'h0ba: keyData[6:0] <= 7'h7F;
9'h0bb: keyData[6:0] <= 7'h7F;
9'h0bc: keyData[6:0] <= 7'h7F;
9'h0bd: keyData[6:0] <= 7'h7F;
9'h0be: keyData[6:0] <= 7'h7F;
9'h0bf: keyData[6:0] <= 7'h7F;
9'h0c0: keyData[6:0] <= 7'h7F;
9'h0c1: keyData[6:0] <= 7'h7F;
9'h0c2: keyData[6:0] <= 7'h7F;
9'h0c3: keyData[6:0] <= 7'h7F;
9'h0c4: keyData[6:0] <= 7'h7F;
9'h0c5: keyData[6:0] <= 7'h7F;
9'h0c6: keyData[6:0] <= 7'h7F;
9'h0c7: keyData[6:0] <= 7'h7F;
9'h0c8: keyData[6:0] <= 7'h7F;
9'h0c9: keyData[6:0] <= 7'h7F;
9'h0ca: keyData[6:0] <= 7'h7F;
9'h0cb: keyData[6:0] <= 7'h7F;
9'h0cc: keyData[6:0] <= 7'h7F;
9'h0cd: keyData[6:0] <= 7'h7F;
9'h0ce: keyData[6:0] <= 7'h7F;
9'h0cf: keyData[6:0] <= 7'h7F;
9'h0d0: keyData[6:0] <= 7'h7F;
9'h0d1: keyData[6:0] <= 7'h7F;
9'h0d2: keyData[6:0] <= 7'h7F;
9'h0d3: keyData[6:0] <= 7'h7F;
9'h0d4: keyData[6:0] <= 7'h7F;
9'h0d5: keyData[6:0] <= 7'h7F;
9'h0d6: keyData[6:0] <= 7'h7F;
9'h0d7: keyData[6:0] <= 7'h7F;
9'h0d8: keyData[6:0] <= 7'h7F;
9'h0d9: keyData[6:0] <= 7'h7F;
9'h0da: keyData[6:0] <= 7'h7F;
9'h0db: keyData[6:0] <= 7'h7F;
9'h0dc: keyData[6:0] <= 7'h7F;
9'h0dd: keyData[6:0] <= 7'h7F;
9'h0de: keyData[6:0] <= 7'h7F;
9'h0df: keyData[6:0] <= 7'h7F;
9'h0e0: keyData[6:0] <= 7'h7F; //ps2 extended key
9'h0e1: keyData[6:0] <= 7'h7F;
9'h0e2: keyData[6:0] <= 7'h7F;
9'h0e3: keyData[6:0] <= 7'h7F;
9'h0e4: keyData[6:0] <= 7'h7F;
9'h0e5: keyData[6:0] <= 7'h7F;
9'h0e6: keyData[6:0] <= 7'h7F;
9'h0e7: keyData[6:0] <= 7'h7F;
9'h0e8: keyData[6:0] <= 7'h7F;
9'h0e9: keyData[6:0] <= 7'h7F;
9'h0ea: keyData[6:0] <= 7'h7F;
9'h0eb: keyData[6:0] <= 7'h7F;
9'h0ec: keyData[6:0] <= 7'h7F;
9'h0ed: keyData[6:0] <= 7'h7F;
9'h0ee: keyData[6:0] <= 7'h7F;
9'h0ef: keyData[6:0] <= 7'h7F;
9'h0f0: keyData[6:0] <= 7'h7F; //ps2 release code
9'h0f1: keyData[6:0] <= 7'h7F;
9'h0f2: keyData[6:0] <= 7'h7F;
9'h0f3: keyData[6:0] <= 7'h7F;
9'h0f4: keyData[6:0] <= 7'h7F;
9'h0f5: keyData[6:0] <= 7'h7F;
9'h0f6: keyData[6:0] <= 7'h7F;
9'h0f7: keyData[6:0] <= 7'h7F;
9'h0f8: keyData[6:0] <= 7'h7F;
9'h0f9: keyData[6:0] <= 7'h7F;
9'h0fa: keyData[6:0] <= 7'h7F; //ps2 ack code
9'h0fb: keyData[6:0] <= 7'h7F;
9'h0fc: keyData[6:0] <= 7'h7F;
9'h0fd: keyData[6:0] <= 7'h7F;
9'h0fe: keyData[6:0] <= 7'h7F;
9'h0ff: keyData[6:0] <= 7'h7F;
9'h100: keyData[6:0] <= 7'h7F;
9'h101: keyData[6:0] <= 7'h7F;
9'h102: keyData[6:0] <= 7'h7F;
9'h103: keyData[6:0] <= 7'h7F;
9'h104: keyData[6:0] <= 7'h7F;
9'h105: keyData[6:0] <= 7'h7F;
9'h106: keyData[6:0] <= 7'h7F;
9'h107: keyData[6:0] <= 7'h7F;
9'h108: keyData[6:0] <= 7'h7F;
9'h109: keyData[6:0] <= 7'h7F;
9'h10a: keyData[6:0] <= 7'h7F;
9'h10b: keyData[6:0] <= 7'h7F;
9'h10c: keyData[6:0] <= 7'h7F;
9'h10d: keyData[6:0] <= 7'h7F;
9'h10e: keyData[6:0] <= 7'h7F;
9'h10f: keyData[6:0] <= 7'h7F;
9'h110: keyData[6:0] <= 7'h7F;
9'h111: keyData[6:0] <= 7'h37; //RIGHT ALT (command)
9'h112: keyData[6:0] <= 7'h7F;
9'h113: keyData[6:0] <= 7'h7F;
9'h114: keyData[6:0] <= 7'h7F;
9'h115: keyData[6:0] <= 7'h7F;
9'h116: keyData[6:0] <= 7'h7F;
9'h117: keyData[6:0] <= 7'h7F;
9'h118: keyData[6:0] <= 7'h7F;
9'h119: keyData[6:0] <= 7'h7F;
9'h11a: keyData[6:0] <= 7'h7F;
9'h11b: keyData[6:0] <= 7'h7F;
9'h11c: keyData[6:0] <= 7'h7F;
9'h11d: keyData[6:0] <= 7'h7F;
9'h11e: keyData[6:0] <= 7'h7F;
9'h11f: keyData[6:0] <= 7'h3A; //WINDOWS OR APPLICATION KEY (option)
9'h120: keyData[6:0] <= 7'h7F;
9'h121: keyData[6:0] <= 7'h7F;
9'h122: keyData[6:0] <= 7'h7F;
9'h123: keyData[6:0] <= 7'h7F;
9'h124: keyData[6:0] <= 7'h7F;
9'h125: keyData[6:0] <= 7'h7F;
9'h126: keyData[6:0] <= 7'h7F;
9'h127: keyData[6:0] <= 7'h7F;
9'h128: keyData[6:0] <= 7'h7F;
9'h129: keyData[6:0] <= 7'h7F;
9'h12a: keyData[6:0] <= 7'h7F;
9'h12b: keyData[6:0] <= 7'h7F;
9'h12c: keyData[6:0] <= 7'h7F;
9'h12d: keyData[6:0] <= 7'h7F;
9'h12e: keyData[6:0] <= 7'h7F;
9'h12f: keyData[6:0] <= 7'h7F;
9'h130: keyData[6:0] <= 7'h7F;
9'h131: keyData[6:0] <= 7'h7F;
9'h132: keyData[6:0] <= 7'h7F;
9'h133: keyData[6:0] <= 7'h7F;
9'h134: keyData[6:0] <= 7'h7F;
9'h135: keyData[6:0] <= 7'h7F;
9'h136: keyData[6:0] <= 7'h7F;
9'h137: keyData[6:0] <= 7'h7F;
9'h138: keyData[6:0] <= 7'h7F;
9'h139: keyData[6:0] <= 7'h7F;
9'h13a: keyData[6:0] <= 7'h7F;
9'h13b: keyData[6:0] <= 7'h7F;
9'h13c: keyData[6:0] <= 7'h7F;
9'h13d: keyData[6:0] <= 7'h7F;
9'h13e: keyData[6:0] <= 7'h7F;
9'h13f: keyData[6:0] <= 7'h7F;
9'h140: keyData[6:0] <= 7'h7F;
9'h141: keyData[6:0] <= 7'h7F;
9'h142: keyData[6:0] <= 7'h7F;
9'h143: keyData[6:0] <= 7'h7F;
9'h144: keyData[6:0] <= 7'h7F;
9'h145: keyData[6:0] <= 7'h7F;
9'h146: keyData[6:0] <= 7'h7F;
9'h147: keyData[6:0] <= 7'h7F;
9'h148: keyData[6:0] <= 7'h7F;
9'h149: keyData[6:0] <= 7'h7F;
9'h14a: keyData[6:0] <= 7'h4B; //KP /
9'h14b: keyData[6:0] <= 7'h7F;
9'h14c: keyData[6:0] <= 7'h7F;
9'h14d: keyData[6:0] <= 7'h7F;
9'h14e: keyData[6:0] <= 7'h7F;
9'h14f: keyData[6:0] <= 7'h7F;
9'h150: keyData[6:0] <= 7'h7F;
9'h151: keyData[6:0] <= 7'h7F;
9'h152: keyData[6:0] <= 7'h7F;
9'h153: keyData[6:0] <= 7'h7F;
9'h154: keyData[6:0] <= 7'h7F;
9'h155: keyData[6:0] <= 7'h7F;
9'h156: keyData[6:0] <= 7'h7F;
9'h157: keyData[6:0] <= 7'h7F;
9'h158: keyData[6:0] <= 7'h7F;
9'h159: keyData[6:0] <= 7'h7F;
9'h15a: keyData[6:0] <= 7'h4C; //KP ENTER
9'h15b: keyData[6:0] <= 7'h7F;
9'h15c: keyData[6:0] <= 7'h7F;
9'h15d: keyData[6:0] <= 7'h7F;
9'h15e: keyData[6:0] <= 7'h7F;
9'h15f: keyData[6:0] <= 7'h7F;
9'h160: keyData[6:0] <= 7'h7F;
9'h161: keyData[6:0] <= 7'h7F;
9'h162: keyData[6:0] <= 7'h7F;
9'h163: keyData[6:0] <= 7'h7F;
9'h164: keyData[6:0] <= 7'h7F;
9'h165: keyData[6:0] <= 7'h7F;
9'h166: keyData[6:0] <= 7'h7F;
9'h167: keyData[6:0] <= 7'h7F;
9'h168: keyData[6:0] <= 7'h7F;
9'h169: keyData[6:0] <= 7'h77; //END
9'h16a: keyData[6:0] <= 7'h7F;
9'h16b: keyData[6:0] <= 7'h3B; //ARROW LEFT
9'h16c: keyData[6:0] <= 7'h73; //HOME
9'h16d: keyData[6:0] <= 7'h7F;
9'h16e: keyData[6:0] <= 7'h7F;
9'h16f: keyData[6:0] <= 7'h7F;
9'h170: keyData[6:0] <= 7'h72; //INSERT = HELP
9'h171: keyData[6:0] <= 7'h75; //DELETE (KP clear?)
9'h172: keyData[6:0] <= 7'h3D; //ARROW DOWN
9'h173: keyData[6:0] <= 7'h7F;
9'h174: keyData[6:0] <= 7'h3C; //ARROW RIGHT
9'h175: keyData[6:0] <= 7'h3E; //ARROW UP
9'h176: keyData[6:0] <= 7'h7F;
9'h177: keyData[6:0] <= 7'h7F;
9'h178: keyData[6:0] <= 7'h7F;
9'h179: keyData[6:0] <= 7'h7F;
9'h17a: keyData[6:0] <= 7'h79; //PGDN <OSD>
9'h17b: keyData[6:0] <= 7'h7F;
9'h17c: keyData[6:0] <= 7'h69; //PRTSCR (F13)
9'h17d: keyData[6:0] <= 7'h74; //PGUP <OSD>
9'h17e: keyData[6:0] <= 7'h71; //ctrl+break (F15)
9'h17f: keyData[6:0] <= 7'h7F;
9'h180: keyData[6:0] <= 7'h7F;
9'h181: keyData[6:0] <= 7'h7F;
9'h182: keyData[6:0] <= 7'h7F;
9'h183: keyData[6:0] <= 7'h7F;
9'h184: keyData[6:0] <= 7'h7F;
9'h185: keyData[6:0] <= 7'h7F;
9'h186: keyData[6:0] <= 7'h7F;
9'h187: keyData[6:0] <= 7'h7F;
9'h188: keyData[6:0] <= 7'h7F;
9'h189: keyData[6:0] <= 7'h7F;
9'h18a: keyData[6:0] <= 7'h7F;
9'h18b: keyData[6:0] <= 7'h7F;
9'h18c: keyData[6:0] <= 7'h7F;
9'h18d: keyData[6:0] <= 7'h7F;
9'h18e: keyData[6:0] <= 7'h7F;
9'h18f: keyData[6:0] <= 7'h7F;
9'h190: keyData[6:0] <= 7'h7F;
9'h191: keyData[6:0] <= 7'h7F;
9'h192: keyData[6:0] <= 7'h7F;
9'h193: keyData[6:0] <= 7'h7F;
9'h194: keyData[6:0] <= 7'h7F;
9'h195: keyData[6:0] <= 7'h7F;
9'h196: keyData[6:0] <= 7'h7F;
9'h197: keyData[6:0] <= 7'h7F;
9'h198: keyData[6:0] <= 7'h7F;
9'h199: keyData[6:0] <= 7'h7F;
9'h19a: keyData[6:0] <= 7'h7F;
9'h19b: keyData[6:0] <= 7'h7F;
9'h19c: keyData[6:0] <= 7'h7F;
9'h19d: keyData[6:0] <= 7'h7F;
9'h19e: keyData[6:0] <= 7'h7F;
9'h19f: keyData[6:0] <= 7'h7F;
9'h1a0: keyData[6:0] <= 7'h7F;
9'h1a1: keyData[6:0] <= 7'h7F;
9'h1a2: keyData[6:0] <= 7'h7F;
9'h1a3: keyData[6:0] <= 7'h7F;
9'h1a4: keyData[6:0] <= 7'h7F;
9'h1a5: keyData[6:0] <= 7'h7F;
9'h1a6: keyData[6:0] <= 7'h7F;
9'h1a7: keyData[6:0] <= 7'h7F;
9'h1a8: keyData[6:0] <= 7'h7F;
9'h1a9: keyData[6:0] <= 7'h7F;
9'h1aa: keyData[6:0] <= 7'h7F;
9'h1ab: keyData[6:0] <= 7'h7F;
9'h1ac: keyData[6:0] <= 7'h7F;
9'h1ad: keyData[6:0] <= 7'h7F;
9'h1ae: keyData[6:0] <= 7'h7F;
9'h1af: keyData[6:0] <= 7'h7F;
9'h1b0: keyData[6:0] <= 7'h7F;
9'h1b1: keyData[6:0] <= 7'h7F;
9'h1b2: keyData[6:0] <= 7'h7F;
9'h1b3: keyData[6:0] <= 7'h7F;
9'h1b4: keyData[6:0] <= 7'h7F;
9'h1b5: keyData[6:0] <= 7'h7F;
9'h1b6: keyData[6:0] <= 7'h7F;
9'h1b7: keyData[6:0] <= 7'h7F;
9'h1b8: keyData[6:0] <= 7'h7F;
9'h1b9: keyData[6:0] <= 7'h7F;
9'h1ba: keyData[6:0] <= 7'h7F;
9'h1bb: keyData[6:0] <= 7'h7F;
9'h1bc: keyData[6:0] <= 7'h7F;
9'h1bd: keyData[6:0] <= 7'h7F;
9'h1be: keyData[6:0] <= 7'h7F;
9'h1bf: keyData[6:0] <= 7'h7F;
9'h1c0: keyData[6:0] <= 7'h7F;
9'h1c1: keyData[6:0] <= 7'h7F;
9'h1c2: keyData[6:0] <= 7'h7F;
9'h1c3: keyData[6:0] <= 7'h7F;
9'h1c4: keyData[6:0] <= 7'h7F;
9'h1c5: keyData[6:0] <= 7'h7F;
9'h1c6: keyData[6:0] <= 7'h7F;
9'h1c7: keyData[6:0] <= 7'h7F;
9'h1c8: keyData[6:0] <= 7'h7F;
9'h1c9: keyData[6:0] <= 7'h7F;
9'h1ca: keyData[6:0] <= 7'h7F;
9'h1cb: keyData[6:0] <= 7'h7F;
9'h1cc: keyData[6:0] <= 7'h7F;
9'h1cd: keyData[6:0] <= 7'h7F;
9'h1ce: keyData[6:0] <= 7'h7F;
9'h1cf: keyData[6:0] <= 7'h7F;
9'h1d0: keyData[6:0] <= 7'h7F;
9'h1d1: keyData[6:0] <= 7'h7F;
9'h1d2: keyData[6:0] <= 7'h7F;
9'h1d3: keyData[6:0] <= 7'h7F;
9'h1d4: keyData[6:0] <= 7'h7F;
9'h1d5: keyData[6:0] <= 7'h7F;
9'h1d6: keyData[6:0] <= 7'h7F;
9'h1d7: keyData[6:0] <= 7'h7F;
9'h1d8: keyData[6:0] <= 7'h7F;
9'h1d9: keyData[6:0] <= 7'h7F;
9'h1da: keyData[6:0] <= 7'h7F;
9'h1db: keyData[6:0] <= 7'h7F;
9'h1dc: keyData[6:0] <= 7'h7F;
9'h1dd: keyData[6:0] <= 7'h7F;
9'h1de: keyData[6:0] <= 7'h7F;
9'h1df: keyData[6:0] <= 7'h7F;
9'h1e0: keyData[6:0] <= 7'h7F; //ps2 extended key(duplicate, see $e0)
9'h1e1: keyData[6:0] <= 7'h7F;
9'h1e2: keyData[6:0] <= 7'h7F;
9'h1e3: keyData[6:0] <= 7'h7F;
9'h1e4: keyData[6:0] <= 7'h7F;
9'h1e5: keyData[6:0] <= 7'h7F;
9'h1e6: keyData[6:0] <= 7'h7F;
9'h1e7: keyData[6:0] <= 7'h7F;
9'h1e8: keyData[6:0] <= 7'h7F;
9'h1e9: keyData[6:0] <= 7'h7F;
9'h1ea: keyData[6:0] <= 7'h7F;
9'h1eb: keyData[6:0] <= 7'h7F;
9'h1ec: keyData[6:0] <= 7'h7F;
9'h1ed: keyData[6:0] <= 7'h7F;
9'h1ee: keyData[6:0] <= 7'h7F;
9'h1ef: keyData[6:0] <= 7'h7F;
9'h1f0: keyData[6:0] <= 7'h7F; //ps2 release code(duplicate, see $f0)
9'h1f1: keyData[6:0] <= 7'h7F;
9'h1f2: keyData[6:0] <= 7'h7F;
9'h1f3: keyData[6:0] <= 7'h7F;
9'h1f4: keyData[6:0] <= 7'h7F;
9'h1f5: keyData[6:0] <= 7'h7F;
9'h1f6: keyData[6:0] <= 7'h7F;
9'h1f7: keyData[6:0] <= 7'h7F;
9'h1f8: keyData[6:0] <= 7'h7F;
9'h1f9: keyData[6:0] <= 7'h7F;
9'h1fa: keyData[6:0] <= 7'h7F; //ps2 ack code(duplicate see $fa)
9'h1fb: keyData[6:0] <= 7'h7F;
9'h1fc: keyData[6:0] <= 7'h7F;
9'h1fd: keyData[6:0] <= 7'h7F;
9'h1fe: keyData[6:0] <= 7'h7F;
9'h1ff: keyData[6:0] <= 7'h7F;
endcase
if(capslock_key && press) capslock <= ~capslock;
if(!(capslock_key && capslock)) begin
keyData[7] <= ~press;
keyStrobe <= 1;
end
end
else begin
keyStrobe <= 0;
end
end
if (reset) capslock <= 0;
end
endmodule
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