Search on the SF3 SD directory: SD:/SYSTEM/LOGBOOK.TXT
OK.... I misunderstood all the conversation... it happens for reading too fast.The SF3 has a diagnosis port at the rear, a 6 pin header, that is used for developing. It reacts on real time with the SF3.I use Putty to connect to it with a USB to serial module.The LOG file is also written to this port, so you can know what firmware version the SF3 has.The pin-out is exactly the same. (Attachment Link)
SF3 (CPC version) is playing MIDI with EMR midi software. We are busy with a MIDI adaptor for the Enterprisehttps://youtu.be/YXQ2acY_SA0