Note on build 589. Includes lots of bug fixes. Improved EPROM writing mode (10-12KB/s). Console mode has been changed to work better with Professional (PCB 4.0). MACH1 includes SPI mode (in addition to QUAD SPI mode), and runs at MCU clock speed (32MHz, etc.). QUAD SPI mode has been upgraded to 40MHz max rate. Fixed some translation errors on French. MACH1 includes new logic that implements a PLL, where it will now run at 80MHz. This has been done to increase memory timing, so operations like NAND will now run at 5MB/s (increase from 4MB/s). Note: this was ONLY tested on PCB 2.1 and 2.2, it might be possible that PCB 2.0 no longer works, in which case, contact me to arrange for upgrade.