John, have you ever tried the reverse path? What about from PC to TBACK/M100 for transfer IN to the M100?
On Sun, Apr 26, 2020 at 2:23 AM John R. Hogerhuis <jho...@pobox.com> wrote: > > > On Sat, Apr 25, 2020 at 7:25 PM Stephen Adolph <twospru...@gmail.com> > wrote: > >> Still playing around with the BCR TTL serial port. >> ...yes it has it's limitations... half duplex, no flow control, bit-banged >> >> ..but it is fast! Today I was able to get 32kB transferred in 7 >> seconds. That's pretty close to 100% utilization on the 57600 baud line. >> >> > Very cool :-) > > >> I think that is a new M100 record. It might need independent >> verification! >> > > Close! > > I just measured TBACK.EXE at 76800bps dumps all 32K to a PC in > 6.56seconds. > > > .\TBACK.EXE -b -f COM9 ABACK.CB > > At 19200 it's like 9 seconds. > > :-) > > TBACK.EXE has you RUN"COM:98N1E" and it injects a small program that > bootstraps up to 76800bps and then blasts the data out the port. > > -- John. >