I’m curious... why is this faster than the UART feeding the real serial port? Bit banged I/O should always be 1/10 the speed of a UART, unless the UART is broken or something.
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. > > I think that is a new M100 record. It might need independent verification! > > (why? to reduce time for CP/M disk backups. 4MB will take a 1/2 hour > with this approach, or more than an hour at 19200 baud.) > > Steve > -- Tom Wilson wilso...@gmail.com (619)940-6311 K6ABZ
