mirror of
https://github.com/pkimpel/retro-b5500.git
synced 2026-02-12 11:17:29 +00:00
356fb5584e
1. Alter method of writing disk sectors to IndexedDB, to avoid dragging along the entire 16KB IO Unit buffer area and unintentionally inflating host disk usage by 30-60X (ouch). This was causing Quota Exceeded errors in recent versions of Firefox. 2. Add onabort traps in B5500DiskUnit to catch QuotaExceeded errors. 3. Modify delay-deviation adjustment mechanism in B5500SetCallback to avoid oscillating between positive and negative cumulative deviations. 4. Correct tape reel angular motion in B5500MagTapeDrive, especially during reverse tape movement. 5. Fix bug with reporting memory parity error during tape I/O, should that ever occur. 6. Reset CPA Algol Glyphs option in default system configuration template. 7. Allow tools/B5500LibMaintDecoder to examine an entire .bcd tape image file instead of just the first 64KB. 8. Add USE SAVEPBT to default options in tools/COLDSTART-XIII deck. 9. Eliminate extraneous "schema update successful" alert when altering a disk subsystem configuration. 10. Commit minor corrections to source/B65ESPOL/SOURCE.alg_m from Richard Fehlinger.
143 lines
4.4 KiB
HTML
143 lines
4.4 KiB
HTML
<!DOCTYPE html>
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<head>
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<title>B5500 LibMaint Decoder</title>
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<meta name="Author" content="Paul Kimpel">
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<meta http-equiv="Content-Script-Type" content="text/javascript">
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<meta http-equiv="Content-Style-Type" content="text/css">
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<script>
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"use strict";
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window.onload = function() {
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var BICtoANSI = [
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"0", "1", "2", "3", "4", "5", "6", "7",
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"8", "9", "#", "@", "?", ":", ">", "}",
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"+", "A", "B", "C", "D", "E", "F", "G",
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"H", "I", ".", "[", "&", "(", "<", "~",
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"|", "J", "K", "L", "M", "N", "O", "P",
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"Q", "R", "$", "*", "-", ")", ";", "{",
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" ", "/", "S", "T", "U", "V", "W", "X",
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"Y", "Z", ",", "%", "!", "=", "]", "\""];
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function appendLine(panel, text) {
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/* Appends "text"+NL as a new text node to the panel DOM element */
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var e = document.createTextNode(text + "\n");
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panel.appendChild(e);
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}
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function clearPanel(panel) {
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/* Clears the text panel */
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var kid;
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while (kid = panel.firstChild) {
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panel.removeChild(kid);
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}
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}
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function fileLoader_onLoad(ev) {
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/* Handle the onload event for an ArrayBuffer FileReader */
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var buf = ev.target.result;
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var bytes = buf.byteLength;
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var data = new DataView(buf); // use DataView() to avoid problems with littleendians.
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var panel = document.getElementById("TextPanel");
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var text = "";
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var v;
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var x = 0;
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clearPanel(panel);
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//alert("File loaded: " + bytes + " bytes");
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do {
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v = data.getUint8(x);
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if (v & 0x80) {
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appendLine(panel, text);
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panel.appendChild(document.createElement("hr"));
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if (v == 0x8F) {
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text = "\\\\\\\\\\ [EOF] /////";
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} else {
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text = BICtoANSI[v & 0x3F];
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}
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} else {
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if (text.length >= 80) {
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appendLine(panel, text);
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text = "";
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}
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text += BICtoANSI[v & 0x3F];
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}
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} while (++x < bytes);
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appendLine(panel, text);
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//document.getElementById("RunBtn").disabled = false;
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}
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function fileSelector_onChange(ev) {
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/* Handle the <input type=file> onchange event when a file is selected */
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var f = ev.target.files[0];
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var reader = new FileReader();
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document.getElementById("GoBtn").disabled = true;
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alert("File selected: " + f.name +
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"\nModified " + f.lastModifiedDate +
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"\nType=" + f.type + ", Size=" + f.size + " octets");
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reader.onload = fileLoader_onLoad;
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reader.readAsArrayBuffer(f);
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}
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function goBtn_onClick(ev) {
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/* Driver to process the data file */
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}
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function checkBrowser() {
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/* Checks whether this browser can support the necessary stuff */
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var missing = "";
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if (!window.File) {missing += ", File"}
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if (!window.FileReader) {missing += ", FileReader"}
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if (!window.FileList) {missing += ", FileList"}
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if (!window.Blob) {missing += ", Blob"}
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if (!window.ArrayBuffer) {missing += ", ArrayBuffer"}
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if (!window.DataView) {missing += ", DataView"}
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if (missing.length == 0) {
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return false;
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} else {
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alert("No can do... your browser does not support the following features:\n" + missing.substring(2));
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return true;
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}
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}
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/* Start of window.onload() */
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if (checkBrowser()) {
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return;
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}
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document.getElementById("FileSelector").addEventListener("change", fileSelector_onChange, false);
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document.getElementById("GoBtn").addEventListener("click", goBtn_onClick, false);
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}
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</script>
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</head>
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<body>
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<div style="position:relative; width:100%">
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<div style="position:absolute; left:0; top:0; width:auto">
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retro-B5500 LibMaint Tape Decoder
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</div>
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<div style="position:absolute; top:0; right:0; width:auto">
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<input id=FileSelector type=file size=60>
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<input id=GoBtn type=button value=Go disabled>
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</div>
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</div>
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<pre id=TextPanel>
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</pre>
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</body>
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</html> |