fair, but pin5 is ground on an RS-232 DB-9. So, that is what I used on MVT100. I think in the future I will just wire both to ground on the MVT100 board.
On Wed, Dec 23, 2020 at 6:39 PM Brian K. White <[email protected]> wrote: > Pin 5 is an odd extra ground on the M100. Pin 7 is the ground for the > spec, all wands, and all machines with the port, including the 100. > > I looked at a lot of things for github.com/bkw777/BCR_Breakout > including schematics or manuals for different wands and guns and card > swipe reader which are used on more things than just the Model T clones, > and also all the T clones that have any BCR port. (KC-85 doesn't) > > -- > bkw > > > > > On 12/23/20 5:34 PM, Stephen Adolph wrote: > > Thank you for giving it a whirl Jim. Hopefully it is now "solid". I > > have it running beside me now. ;) > > So, you did the BCR hack as well? nice. > > > > I have the "hack" installed on one of my T102s. Works the same but (1) > > the schematic is a bit different and (2) there is a missing ground on > > pin 5 of the BCR port of the T102. So you need 2 straps instead of one. > > > > I must admit - I really like having a 15 inch LCD hooked up to the > > T102. adds a lot. Too bad most option roms can't use it. > > > > However, one might. I think that ROM2/Cleuseau could be made to work, > > with a bit of effort. > > > > Anyhow, that might be the 2021 activity - sorting out how to get ROMs to > > work compatibly with VT100. > > > > Steve > > > > > > On Wed, Dec 23, 2020 at 4:47 PM Jim Anderson <[email protected] > > <mailto:[email protected]>> wrote: > > > > > -----Original Message----- > > > > > > Regarding the firmware for the MVT100 video adapter, I have > > updated the > > > firmware to address the scroll issue with TEXT. I've done some > > > "designer testing" and it looks good. Of course I always > appreciate > > > test reports, thanks. Really helps me to conserve time. ( you > would > > > not believe how much time I have been dumping into my projects > since > > > Covid). > > > [...] > > > Good luck with the upgrade, and let me know how it goes. > > > > Hooray! Some brief testing with a few .DO files shows that TEXT > > works great backscrolling even with the label line turned on! > > Excellent! > > > > Loading the upgrade worked very well. The one note I might add is > > to remind people that loading the new firmware reverts the saved > > config settings back to default. This might be obvious to some but > > I took a bit to clue in - I was baffled (and a little scared) when I > > brought it back to my M100 and it wouldn't output anything after the > > bootup message! I'm using the BCR hack so it was just a matter of > > setting the baud rate back to 57600; most people will need to set it > > to 19200 and re-enable the RS232 signal invert. (Oh, and if you use > > the composite output, or even if you plan to try it in the future, > > change it from PAL to NTSC so you won't be stuck wondering why it > > doesn't work...) > > > > > > > > > > > > > > > > > > > > jim > > > > > -- > bkw >
