Hi You'll find it here under the rom folder: https://github.com/Warshi7819/TRS80-M100-Norwegian
mvh, Rune Devik On Tue, 7 Apr 2026, 16:49 Kenneth Pettit, <[email protected]> wrote: > b9, > > Is the Televerket ROM available online somewhere? > > Ken > > On 4/6/26 11:46 PM, B9 wrote: > > Following John's hint, I was able to figure out the backwards writing > problem. It turns out to be a bug in the original Norwegian RxHandler code > from INSTAL.BA which was enabling interrupts (EI) before jumping back > into the ROM's handler. Replacing the EI instruction with NOP fixes it. > > I look forward to hearing if files sent to TELCOM show reversed words, if > they do, then my patched INSTAL (below) should fix it. To get higher speeds > with retro equipment you need a better USB to serial converter. It has to > have "on chip XON/XOFF", but that's rarely mentioned on the packaging. Look > for "FTDI" or "FT232". > > As for the missing line drawing characters, you actually have most of the > characters I've seen used in games. Try that FOR loop again, but starting > at character 128 and you'll see what I mean. All you'll be missing are > blocks and boxes like this: > > [image: How to type in Virtual T using a Norwegian ROM] > > —b9 > > >
