Firmware Update #5.840 for HX3.5
Verfasst: 13. Mär 2026, 20:58
Firmware #5.840 along with Scan drivers 6x.53 and FPGA #12032026 for HX3.5 boards is online! With some luck, I was able to squeeze some HX3.7 features in HX3.5 firmware and FPGA. The VHDL synthesis with old Xilinx ISE 14.7 is always an adventure -- you just change the FPGA date, and it will no longer fit, as packing reached nearly 100 percent. Anyway, the new Sound Engine yields an improved AO28 emulation with own swell parameters (Volumes section in Editor) for each organ model and higher dynamic range. I also added loadable velocity slopes for Fatar and XB2 scan drivers, adustable with param #1363. The new approach offers much better dynamic response du to real 1/t velocity calculation and no longer "missing notes" when playing the GM synth.
Although FPGA has new AO28 swell emulation, there is no sweep test generator as found in HX3.6 and HX3.7 (does not fit into FPGA fabric). This is a major update, so be sure to update FPGA, firmware, scan driver, organ and speaker models. Check volumes, organ and speaker parameters if you want to keep your settings; new AO28 and vibrato circuits have somewhat higher output levels. Do not update defaults or EEPROM.
Although FPGA has new AO28 swell emulation, there is no sweep test generator as found in HX3.6 and HX3.7 (does not fit into FPGA fabric). This is a major update, so be sure to update FPGA, firmware, scan driver, organ and speaker models. Check volumes, organ and speaker parameters if you want to keep your settings; new AO28 and vibrato circuits have somewhat higher output levels. Do not update defaults or EEPROM.
- Manager/Panel: Bugfix, Trackbars did not work properly or did not sync
- Manager: Update to common HX3.7 source base (some features may not apply to HX3.5)
- Manager: Support for new scan drivers, Pulse 6105W, FatarScan1-61, FatarScan1-73 (future products)
- Firmware: Bugfix, setting momentary mode on footswitch input (System Inits param #1502) did not work
- Firmware: Support for new scan drivers with loadable dynamic slope
- Firmware: Support for new AO28 emulation, compatible with HX3.7
- Scan drivers: Loadable dynamic slopes instead of 1/t approximation, better MIDI velocity response for Fatar and XB2 keybeds
- Scan drivers: New versions for FatarScan1-61, FatarScan1-73 and Pulse 6105 keybeds (future products)
- FPGA: Additional RAM for loadable dynamic slopes
- FPGA: New AO28 swell emulation and vibrato circuit, derived from HX3.7