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mirror of https://github.com/pkimpel/retro-b5500.git synced 2026-05-05 15:44:28 +00:00

Commit DCMCP transcription as of 2012-09-30; move test loader code

into B5500CentralControl module; eliminate "cc" as a global variable 
within emulator.
This commit is contained in:
paul
2012-09-30 21:39:03 +00:00
parent 71565e7ba4
commit 155589f383
5 changed files with 377 additions and 179 deletions

View File

@@ -17,45 +17,18 @@
window.onload = function() {
var cc = new B5500CentralControl();
function store(addr, word) {
/* Stores a 48-bit word at the specified B5500 address.
Invalid addresses are ignored */
var modNr = addr >>> 12;
var modAddr = addr & 0x0FFF;
if (modNr < 8 && cc.MemMod[modNr]) {
cc.MemMod[modNr][modAddr] = word;
}
}
function fileLoader_onLoad(ev) {
/* Handle the onload event for an ArrayBuffer FileReader */
var addr = 0; // starting B5500 memory address
var buf = ev.target.result;
var bytes = buf.byteLength;
var data = new DataView(buf); // use DataView() to avoid problems with littleendians.
var power = 0x10000000000;
var word = 0;
var x = 0;
var words;
while (bytes > 6) {
store(addr, data.getUint32(x, false)*0x10000 + data.getUint16(x+4, false));
x += 6;
bytes -= 6;
if (++addr > 0x7FFF) {
break;
}
words = cc.loadTest(buf, addr);
alert("File loaded: " + buf.byteLength + " bytes, " +
words + " words, last addr = @" + (addr+words-1).toString(8));
if (words > 0) {
document.getElementById("RunBtn").disabled = false;
}
// Store any partial word that may be left
while (bytes > 0) {
word += data.getUint8(x, false)*power;
x++;
bytes--;
power /= 0x100;
}
store(addr, word);
document.getElementById("RunBtn").disabled = false;
alert("File loaded: " + buf.byteLength + " bytes, last addr = @" + addr.toString(8));
}
function fileSelector_onChange(ev) {
@@ -63,27 +36,15 @@ window.onload = function() {
var f = ev.target.files[0];
var reader = new FileReader();
reader.onload = fileLoader_onLoad;
document.getElementById("RunBtn").disabled = true;
reader.onload = fileLoader_onLoad;
reader.readAsArrayBuffer(f);
}
function runBtn_onClick(ev) {
/* Driver to initiate Processor module */
/* Driver to initiate the Processor module */
cc.clear();
cc.loadTimer = null;
cc.LOFF = 0;
cc.P1.C = 0x10; // execute from address @20
cc.P1.access(0x30); // P = [C]
cc.P1.T = cc.fieldIsolate(cc.P, 0, 12);
cc.P1.TROF = 1;
cc.P1.L = 1; // advance L to the next syllable
// Now start scheduling P1 on the Javascript thread
cc.P1.procTime = new Date().getTime()*1000;
cc.P1.scheduler = setTimeout(cc.P1.schedule, 0);
cc.runTest(0x10); // execute from address @20
}
function checkBrowser() {