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.
1. Move project from Google Code to GitHub (https://github.com/pkimpel/retro-b5500/). Update links and help pages; convert wiki pages to GitHub's MarkDown format.
2. Implement emulator-hosted memory dump to a tape image that can be saved and input into the B5500 DUMP/ANALYZE utility for analysis. Activated by clicking the NOT READY button on the Console.
3. Fix bad assignments to Processor X register in arithmetic ops (affected only SyllableDebugger script).
4. Remove IndexedDB.openDatabase() version parameter so the B5500ColdLoader and tools/ scripts will work in non-Firefox browsers.
5. Add a "?db" query string parameter to the tools/scripts so these scripts can open disk subsystems other than B5500DiskUnit.
6. Correct pre-allocated file locations and ESU card in tools/COLDSTART-XIII.card.
7. Implement new double-click mechanism to copy and clear the contents of card punch, datacom terminal, and line-printer output areas to a temporary window for subsequent copying or saving.
8. Correct handling of Ctrl-B (break), Ctrl-D (disconnect request), Ctrl-E (WRU), Ctrl-L (clear input buffer), and Ctrl-Q (alternate end-of-message) in B5500DatacomUnit.
9. Implement reporting of Model IB (slow, bulk) disk in B5500DiskUnit readInterrogate.
10. Implement detection of browser IndexedDB quota-exceeded errors in B5500DiskUnit (primarily to handle the fixed 2GB limit for off-line storage in Firefox).
11. Correct problem when line printer exhausted paper and FORM FEED triple-click did not clear the condition.
12. Eliminate BOT marker sensed in result for tape drive Write Interrogate operation -- Mark XIII and XV MCPs treat this as an error and will not purge blank tapes because of it.
13. Fix double-click of SPO INPUT REQUEST button either sending a duplicate interrupt to the system or the second click moving focus from the SPO input box.
14. Further tuning of delay-deviation adjustment mechanism in B5500SetCallback.js.
15. Reinstate ability of SPO to wrap long outputs to additional lines (apparently lost with new SPO input mechanism in 1.00).
16. Commit preliminary COOLSTART-XIII.card and MCPTAPEDISK-XIII.card decks.
1. Split operator Control Panel from B5500Console and make it a small, separate window.
2. Implement emulator home page in what remains of B5500Console page, with Start buttons for emulator.
3. Implement improvements to setCallback() mechanism, copied from Datatron 205 project.
4. Increase scrollback for SPO and Datacom windows from 1500 to 5000 lines.
5. Correct application of green-bar styling in B5500LinePrinter (apparent in Chrome).
6. Improve initial positioning of Magnetic Tape unit windows; add "B" to mag tape reel image.
7. Minor optimizations to bit-field isolate/insert routines in CentralControl.
8. Miscellaneous enhancements to UI appearance.
9. Minor changes to hosting website pages.
1. Implement new system and disk subsystem configuration mechanism.
2. Implement initial Mark-XIII Cold Start card deck for use with new configuration interfaces.
3. Deprecate use of B5500ColdLoader.html script (replaced by new configuration mechanism and Cold Start deck), but correct and enhance IndexedDB database detection, creation, and deletion in it.
4. Implement "Application Cache" support to allow emulator to run off-line in a browser.
5. Implement web-font support and update all UIs to use DejaVu Sans and DejaVu Sans Mono from downloaded .woff or .ttf font files.
6. Rework some code in Processor OPDC, DESC, and indexDescriptor routines, attempting to resolve Flag Bit errors (issue #23). This appears to result in some improvement, but we still see them occasionally under load.
7. Line Printer:
- Implement new line printer driver with more realistic UI and operator controls.
- Implement Algol Glyphs option to render special Algol characters in Unicode.
- Implement support for optional "greenbar" shading on the "paper".
8. SPO:
- Redesign SPO driver to accept input from a text <input> element instead of capturing keystrokes directly from the window or "paper" <iframe>. This was done to allow input from tablet and mobile devices that will not pop up a keyboard unless an input-like element has the focus.
- Implement Unicode Algol Glyphs support on output.
- Intelligently resize "paper" area when SPO window is resized.
- Accept "_" as a substitute for "~" as end-of-message on input.
9. Card Punch:
- Implement Unicode Algol Glyphs support on output.
- Implement stacker-full annunciators in UI.
10. Card Reader:
- Implement Unicode Algol Glyphs support on input.
- Accept "_" as a substitute for "~" on input.
11. Disk:
- Adapt B5500DiskUnit driver to new configuration mechanism.
- Implement support for Model-IB (slow) disk and non-DFX disk storage configurations; support up to 20 EUs.
- Implement check for DKA readiness in cc.load() if not doing card-load-select.
12. Datacom:
- Rework datacom driver keystroke handling for compatibility with Google Chrome.
- Correct typo (line 437) in B5500DatacomUnit reported by Peter Grootswagers (issue #28).
13. Magnetic Tape:
- Implement more granular tape reel animation in B5500MagTapeDrive.
- Open the tape loader window on top of its device window.
14. Correct color of NOT READY lamps in peripheral device UIs; convert <progress> bars to <meter> elements.
15. More intelligently resize peripheral UI controls when their window is resized.
16. Implement lamp test during power-on in B5500Console.
17. Illuminate NOT READY light on Console at power-on if certain minimum configuration requirements are not met.
18. Set all HTML <meta> Content-Type character sets to UTF-8 (were ISO-8859-1); correct problem with FireFox requiring the character set to be specified within the first 1024 characters of an HTML file.
19. Clean up and refactor CSS style sheets
20. Split Javascript code out from B5500Console.html to new B5500Console.js.
21. Refactor common UI routines into webUI\B5500Util.js.
22. Move images and fonts to new webUI/resources directory; rearrange files in webUI/tool, tools, tests, source directories of repo.
23. Make significant wiki updates to document the new features in this release.
2. Fully implement Double Precision Add/Subtract (DLA/DLS), Multiply (DLM), and Divide (DLD) syllables.
3. Replace standard setTimeout() by redesigned setCallback() mechanism throughout the emulator for scheduling timing delays and other callbacks on the Javascript thread. Delete obsolete setImmediate() mechanism.
4. Replace "new Date().getTime()" by "performance.now()" calls for greater timer precision.
5. Minor tweaks to Single Precision arithmetic operators.
6. Replace Javascript postfix operators by prefix operators wherever feasible (e.g., x++ becomes ++x).
8. Attempt to correct character translation and keyboard filtering in DatacomUnit for CANDE.
9. Minor changes to button colors and illumination behavior for I/O devices and Console.
10. Suppress I/O device classes in B5500SyllableDebugger by default (uncomment in source to enable).
. Drop support for webkitIndexedDB and mozIndexedDB (for now).
. Configure four tape drives (MTA-MTD) by default.
