I was wondering if you could use Raspi with a Bluetooth module shown in a YOUTUBE video that showed a Model 100 controlling a WALL-E robot?
John M. On May 20, 2015, at 10:47 AM, David Flippo <[email protected]> wrote: > > Being new to this forum, I'll add my 1.5 cents to the TDock discussion. It seems, the most straight forward approach, both hardware, and software, would be a serial to USB interface to a Raspi; the Raspi being the emulator. The Raspi would offer all of the hardware add-ons WiFi, HDMI/ Composite display, SD, etc capability. The 100/102/200, would need a simple serial interface program, developed to communicate through the serial interface, to the Raspi. In effect the 100/102/200, is acting as a dump terminal. The software for the Raspi emulator would, or might be the only software challenge. This approach would provide a more simple portability interface, both hardware wise, and wouldn't be limited to physical portability also. > > Dave ----------------------------------------------------------------------------------------------------------------- I an not a technical kind of person. I do not have any engineering or programming experience. I use to sold parts smt parts on to PC boards in the 1990's thru 2000. Then my eyesight got bad and I wear glasses now. As I got older, I had more health problems and can not do the things I use in the 90's & 2000's. It would be nice if a bunch of people could work on a project using Raspi, Bluetooth module board and USB to work with a TRS 80 Model 100. Here is the YOUTUBE video showing bluetooth module inside a TRS 80 Model controlling a WALL-E with M100 keyboard. Click below to see video. https://youtu.be/SUclTa5wqcE John M. On May 20, 2015, at 9:49 AM, Ken Pettit <[email protected]> wrote: Hey Mike, I suppose you could use serial port + Bluetooth to drive an 80x25 character display. But I wonder how slow it would be to do scrolling, etc. I was already worried about how slow a parallel port implementation would be relative to a true system bus connection. And I think the tricky part about what you said is the word "internal" as it relates to Bluetooth. Most people don't want to take their machines apart and take a soldering iron to them, myself included and I even have the skills to do it (or at least I tell myself I do ;) As far as the how, the SysROM has multiple RST 7 hooks for sending characters to the LCD. And it uses RAM variables to record the current screen dimensions (which are initialized to 40x8). Redirecting to anything other than the internal LCD (i.e. DVI system bus, parallel port, serial port, etc.) requires installing a relatively small .CO program and RST7 hooks to intercept the data going to the LCD. And BASIC has a WIDTH command for setting the width to either 40 or 80. But the WIDTH command will fail unless you have actually installed a RST7 hook to handle it. Ken
