This release contains binaries for Windows (x64), macOS (x64 and arm64), and Linux (x64) for production use for the Autumn and Spring terms of 2024-2025. Find the correct correct binary or disk image for your operating system as below:
- Windows (x64):
issie-5.2.2-win-x64.zip(How to install and run the binaries on your machine); - macOS (arm64, or Apple Silicon Macs):
issie-5.2.2-macos-arm64.dmg; - macOS (x64, or Intel Macs):
issie-5.2.2-macos-x64.dmg; - Linux (x64):
issie-5.2.2-linux-x64.zip, unzip the file, and run Issie like:/path/to/issie/binary --no-sandbox(v5.2.2 compilation pending).
The main changes from last year are fixing some quite bad but never reported memory leaks, and large improvements to the waveforms simulator. This has been a challenging part of Issie to get right but it is now very usable, even on long simulations. In addition the code has had major refactoring to make future development & maintenance.
- Credit for the initial waveform simulator scrollbar and on-demand waveform generation goes to Samuel Wang.
- Credit for the memory leak fixes goes to Tom Clarke.
- Credit for bringing the memory leak to the attention of the developers goes to Radaan Madhan.
- Please could any bugs found in this v5.2.x release be reported ASAP! They can be fixed.
v5.2.2
- Fixed: vertical scrollbar for large truth tables.
- Thanks to LH-AND-FPGA for the fix
v5.2.1
- feat: waveform simulator start/view error UI made consistent with step simulation UI
- fixed: small bugs in waveform simulator top-level UI
v5.2.0
Fixed from last year
- Fix: a bad memory leak #463 that caused slowdown and crashes when working on medium-sized or bigger designs
- Fix: a different memory leak that caused crashes when repeating very long waveform simulations of large designs
- Fix: many minor issues
- Fix (internal) waveform simulator has been refactored as 8 separate source files and is now easy to work on.
New Features
- Waveform Simulation improvements
- Feat: a (very nice) responsive software horizontal scrollbar. Waveforms are now generated on demand only for the visible clock cycles.
- Feat: waveform numeric values positioned better for legibility
- Feat: waveforms grey out nicely when numeric values are too long to print.
- Feat: numeric values have been shortened: the 0 in front of radixed numbers is omitted, and the radix itself is omitted when the numbers are single digit.
- Feat: waveforms scroll vertically if necessary separately from simulator top controls and the RAM viewer.
- Feat: usable simulating up to 1,000,000 clock cycles
- Feat: a new RAM viewer windowed mode for viewing RAMs that have a large number of non-zero memory locations
- Feat: a super-zoom feature for viewing long waveforms
- Feat: configuration popup for changing font sizes and other parameters
- Feat: rationalised top controls with new help buttons
- Feat: arrow keys control highlighted cycle
- Feat: arbitrary length busses - previous limitations on constants, bus compare, memory have been removed so all of Issie will work with up to 16384 bit busses.
- Feat: very long bus-width number printing has been improved
- Feat: new Eratosthenes Sieve demo shows waveforms over 800,000 cycles and all of RAM written.