RELEASE_NOTES

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** FF OSD Release Notes
** Keir Fraser <keir.xen@gmail.com>
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** v1.9 - 29 July 2021
 - Support AT32F403 chip as alternative to STM32F103
 - Support momentary-action hotkeys

** v1.8 - 17 January 2020
 - Support VGA (30kHz) video timing
 - Support PA7 (SPI1) as display-output pin for higher-resolution VGA OSD
 - Run-time configuration enhancements:
   - Display Enable (PA15): Active HIGH, Active LOW, Disabled*
   - Display Height: Double, Normal*
   - Pixel Timing: 15kHz*, VGA, Auto
   - Sync Polarity: High, Low*, Auto
 - Amiga: WASD hotkeys to quickly move the OSD box

** v1.7 - 9 October 2019
 - I2C: Bidirectional communications to Gotek
   - Next FF release (v3.5a) will **REQUIRE** this firmware!
   - PLEASE UPDATE!!
 - Amiga: Hotkeys control Gotek buttons via I2C
   - The physical connection via A3-A5 **no longer works**
   - A3-A5 are held LOW to force disconnection from Gotek
   - A3-A5 may be repurposed in future
 - Bug fixes:
   - Fixed screen corruption after saving config to Flash
   - Fixed I2C corruption after saving config to Flash
   - Amiga hotkeys are edge triggered (initial keypress only)
 - Implement Watchdog to reset OSD if it hangs

** v1.6 - 30 September 2019
 - I2C: Fix FF-OSD extended protocol handling
   - No more phantom button presses
 - Amiga: Clear keymap on C-A-A reset

** v1.5 - 28 September 2019
 - Fix Rotary Encoder support (broken in v1.4)
 - Amiga: L.Ctrl+L.Alt+Del toggles OSD on/off
 - Compile-time options:
   - Amiga hotkeys F1-F10 can control pins B8-B10
   - Switch ROMs, switch Gotek DF0/DF1, switch PAL/NTSC, ...
   - Support external video buffer via Output Enable at A15

** v1.4 - 25 September 2019
 - Further improvements to display stability
 - Support Gotek buttons for OSD configuration
   - Requires FlashFloppy v3.4a or later
 - Jumper A1-A2 to reset FF OSD to factory defaults

** v1.3 - 24 September 2019
 - Improved display stability (no visible glitches)
 - FlashFloppy: Support custom I2C protocol when A0-A1 pins jumpered
   - Enhanced display output (eg. selective double height rows)
   - Allows I2C bus sharing with original OLED or LCD display
 - Amiga keyboard: HELP replaces F1 as the FF OSD Config hotkey
 - Amiga keyboard: L.Ctrl-L.Alt-Return steals the keyboard
   - L.Ctrl and L.Alt do not need to be held while keyboard is stolen

** v1.2 - 20 September 2019
 - Move Gotek button outputs from C13-15 to A3-5
   - C13-15 are weak outputs
   - C13-15 are in use (LED, crystal) on many "Pill" boards
   - C13-15 not available at a header on some "Pill" boards

** v1.1 - 17 September 2019
 - Support Amiga keyboard for configuration and Gotek button presses
   - L.Alt + L.Ctrl must be held to enable the following magic keys
     - Left Arrow: Down/Left; Right Arrow: Up/Right; Up Arrow: Select
     - F1: Enter the FF OSD configuration menu
 - Configuration: Add a Save/Use/Discard/Reset selector
 - Sync IRQ: Avoid spin-waiting in this high-priority interrupt

** v1.0 - 13 September 2019
** Initial release