Got it using a T200 instead of the M100! The file for the disk copy of the TPDD boot disk using F4: Bkup in FLOPPY.CO is at http://trs80stuff.net/tpdd/tpdd_boot_disk_backup_log_hex.txt
The backup process involved 3 swaps of the source/destination disks (S>D, D>S, S>D) at times 20:00:06.529, 20:00:49.169 and 20:01:04.939. If not sure, the large blocks of data transfer that start with [TPDD] are when the TPDD is reading from the disk and [M100] are when the TPDD is writing to the disk. Enjoy. From: M100 [mailto:[email protected]] On Behalf Of Gary Hammond Sent: Wednesday, 17 August 2016 8:28 PM To: 'Model 100 Discussion' <[email protected] <mailto:[email protected]> > Subject: [M100] TPDD/TPDD2 boot disk captures (Take 2) . 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. .
