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fallback to network if include fails

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This commit is contained in:
Steven Hugg 2018-02-14 14:58:38 -06:00
parent 89b1c64ac8
commit 6b4c3bdbc2
3 changed files with 35 additions and 12 deletions
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34
presets/verilog/cpu8.v
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@ -1,17 +1,23 @@
// ALU operations
parameter OP_LOAD_A = 4'h0;
parameter OP_LOAD_B = 4'h1;
parameter OP_OR = 4'h2;
parameter OP_AND = 4'h3;
parameter OP_XOR = 4'h4;
parameter OP_INC = 4'h5;
parameter OP_DEC = 4'h6;
parameter OP_INC = 4'h2;
parameter OP_DEC = 4'h3;
parameter OP_OR = 4'h4;
parameter OP_AND = 4'h5;
parameter OP_XOR = 4'h6;
parameter OP_ZERO = 4'h7;
// operations that generate carry
parameter OP_ADD = 4'h8;
parameter OP_SUB = 4'h9;
parameter OP_ASL = 4'ha;
parameter OP_LSR = 4'hb;
// operations that generate and use carry
parameter OP_ADC = 4'h8;
parameter OP_SBB = 4'h9;
parameter OP_ROL = 4'ha;
parameter OP_ROR = 4'hb;
parameter OP_ADC = 4'hc;
parameter OP_SBB = 4'hd;
parameter OP_ROL = 4'he;
parameter OP_ROR = 4'hf;
module ALU(A, B, Y, aluop, carry);
@ -25,18 +31,22 @@ module ALU(A, B, Y, aluop, carry);
case (aluop)
OP_LOAD_A: Y = {1'b0, A};
OP_LOAD_B: Y = {1'b0, B};
OP_INC: Y = A + 1;
OP_DEC: Y = A - 1;
OP_OR: Y = {1'b0, A | B};
OP_AND: Y = {1'b0, A & B};
OP_XOR: Y = {1'b0, A ^ B};
OP_INC: Y = A + 1;
OP_DEC: Y = A - 1;
OP_ZERO: Y = 0;
OP_ADD: Y = A + B;
OP_SUB: Y = A - B;
OP_ASL: Y = {A, 1'b0};
OP_LSR: Y = {A[0], 1'b0, A[7:1]};
OP_ADC: Y = A + B + (carry?1:0);
OP_SBB: Y = A - B - (carry?1:0);
OP_ROL: Y = {A, carry};
OP_ROR: Y = {A[0], carry, A[7:1]};
default: Y = 9'bx;
endcase
endmodule

1
src/ui.js
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@ -424,6 +424,7 @@ function loadFileDependencies(text) {
while (m = re.exec(text)) {
arr.push({
filename:m[1],
prefix:platform_id,
text:store.loadFile(m[1]) || store.loadFile('local/'+m[1]) // TODO??
});
}

12
src/worker/workermain.js
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@ -1049,6 +1049,18 @@ function writeDependencies(depends, FS, errors) {
var d = depends[i];
if (d.text) {
FS.writeFile(d.filename, d.text, {encoding:'utf8'});
} else {
// load from network (hopefully cached)
// TODO: get from indexeddb?
var path = '../../presets/' + d.prefix + '/' + d.filename;
var xhr = new XMLHttpRequest();
xhr.open("GET", path, false); // synchronous request
xhr.send(null);
if (xhr.response) {
FS.writeFile(d.filename, xhr.response, {encoding:'utf8'});
} else {
console.log("Could not load " + path);
}
}
}
}