I have changed the setup for capturing of the backup process for the TPDD2 boot disk from USB/serial adapters on a laptop to PCI quad com card along with purchasing a copy of DockLight. The results are much cleaner than before.
The log of the TPDD2 boot disk backup is at http://trs80stuff.net/tpdd/tpdd2_boot_disk_backup_log_hex.txt Reading of the boot disk starts at 17/08/2016 20:02:13.778 and finishes at 17/08/2016 20:02:38.897. Writing of the new disk starts at 17/08/2016 20:02:56.492 (Line 666 ?!?) and finishes at 17/08/2016 20:03:32.795 An interesting note is that the copied boot disk will not boot until you open the write protect tab. Had me stumped for a while. The booting from a TPDD2 boot disk after entering the RUN"COM:98N1ENN" command has been captured in the file http://trs80stuff.net/tpdd/tpdd2_boot_log_hex.txt The booting from a TPDD boot disk after entering the mini program in the manual has been captured in the file http://trs80stuff.net/tpdd/tpdd_boot_log_hex.txt I have not yet succeeded in capturing the TPDD backup of the boot disk. There is just enough bleed to the serial sniffer to stop the backup process commencing after the destination disk has been formatted. The backup program hangs at the end of the format routine and there is no disk activity after the heads return to the start position. Normally there looks like a head seek to read a directory at the end of the format. If I take the serial sniffer out of the circuit, the backup process works fine. I have tried with 2 different TPDD's and I get the same result. Maybe the serial com circuit is more sensitive in the TPDD's. I may need to make up an external serial buffer to boost the RS-232 levels. Cheers, Gary
