The hardware is capable of 76,800 baud and if the other end supports it then John's Hterm can run at that speed.
Using XON/XOFF handshaking and minimal buffer size the native apps BASIC, TEXT and TELCOM will run at 19,200bd. Without handshaking the maximum speed depends on the software and what it has to do between characters received; BASIC is the slowest because it has to interpret incoming text. TELCOM is next because it has to display each character and possibly scroll the screen. Download is slower because it also has to store the characters. TEXT is the fastest because it only has to store the characters. I did some tests years ago but don't remember the results; why not try it yourself? Create a large (20K) text file, send it to and from the M100 and compare it to the original. 600 bd is probably the fastest in all cases while TEXT may be happy with 1200. On Thu, Nov 30, 2023 at 1:30 AM runrin <run....@rin.run> wrote: > > hey all, > > i was wondering if anyone has done any work determining the maximum baud > rate the m100 supports without xon/xoff flow control? i assumed it was > 9600 because thats what most of my machines from that era support > (usually with a 8250 uart). > > i've been working on a homebrew computer for some time now, and even > with a dead stable serial clock at 9600 hz i'm dropping characters on > the m100. i thought it was a software issue, but it works perfectly with > my heathkit terminal, so i'm thinking its an m100 problem. > > 300 baud worked fine, but even as slow as 2600 seemed to be an issue. > > thanks!
