AtariGeezer Posted May 28, 2017 Share Posted May 28, 2017 Anyone ever seen one of these? I have one arriving on Tuesday and was wondering if they use a standard R: handler or what? 2 Quote Link to comment Share on other sites More sharing options...
+Stephen Posted May 28, 2017 Share Posted May 28, 2017 Wow - that's new to me. Quote Link to comment Share on other sites More sharing options...
AtariGeezer Posted May 28, 2017 Author Share Posted May 28, 2017 Same here, After buying it, I looked for reviews of it but only saw a couple ads in Antic and Compute! mags... Quote Link to comment Share on other sites More sharing options...
Brentarian Posted May 28, 2017 Share Posted May 28, 2017 Good find! If I had to guess I would say probably RVerter. Quote Link to comment Share on other sites More sharing options...
AtariGeezer Posted May 30, 2017 Author Share Posted May 30, 2017 It arrived today, it's not a RVerter circuit that uses a Max232, but rather all discrete components: transistors, diodes, resistors and capacitors. I'll draw up a schematic and post when finished... 5 Quote Link to comment Share on other sites More sharing options...
AtariGeezer Posted June 1, 2017 Author Share Posted June 1, 2017 Here is the Digital Devices U-Call Schematic that I back engineered... 7 Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted June 2, 2017 Share Posted June 2, 2017 with some small modification this could well go reliably beyond the 19,200 mark... my only gripe was the lack of dtr and now I know why.... just tied to 5v..grrr Supra had one for pairing with an AVATEX modem but it was a combination somewhere between this an actual r device... it buffered some.. this also explains something in terms of evolution of the product Quote Link to comment Share on other sites More sharing options...
AtariGeezer Posted June 3, 2017 Author Share Posted June 3, 2017 Yep, the PCB has a provision for an additional transistor that ties to the DTR Line, but it's also shared with the TXD circuit so that probably wouldn't fly... Quote Link to comment Share on other sites More sharing options...
Kyle22 Posted June 4, 2017 Share Posted June 4, 2017 I have been saying for a while that R:Verter is the simple, cheap interface. The problem is that it lacks proper control lines. What we need is to use a joystick port to add the missing lines so we can have full flow control. Ideas? Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted June 4, 2017 Share Posted June 4, 2017 as you can see this device did have the lines... just not dtr in this version.. though I am certain it could be added... supra had one that did dtr... used the modem with... It worked over sio no weird wires to the joystick port... ri (ring indicate) is really not used by anything at all even back then.. the bbs just looked for the connect message, ring, carrier detect, and dtr to hang up.... in any event, I bet a close look, rework and a capable driver will yield a suitable modern day device that suits the purpose... Quote Link to comment Share on other sites More sharing options...
+hunmanik Posted June 15, 2017 Share Posted June 15, 2017 Do we have an answer to the original question? What software or type of R: handler would work with the U-CALL? Was it distributed with software? Quote Link to comment Share on other sites More sharing options...
AtariGeezer Posted June 15, 2017 Author Share Posted June 15, 2017 It would use a Handler similar to the R-Verter, but not the exact same one. The U-Call uses RI (Ring Indicator) and R-Verter uses RTS. I'm sure it was it distributed with software to use it... 1 Quote Link to comment Share on other sites More sharing options...
+hunmanik Posted June 15, 2017 Share Posted June 15, 2017 A couple years back I constructed what I think is a very comprehensive collection of R: handlers, but I don't have anything I can recognize as being for the U-CALL. Another possibility is if it were distributed with a complete communications program with built-in handler. But I don't know of a program like that either. So I'm hoping someone can post or share any original software, or original documentation, that goes with the U-CALL. Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted June 15, 2017 Share Posted June 15, 2017 (edited) Geezer is correct in order to use it with TurboTwin2000 BBS it loaded a handler of sorts before the BBS... please check your files for the supra version as well... it was in a black half cartridge sized case with one end completely open that was circa 1985 ish give or take... You could access the device directly but that is pretty much like writing your own driver... Edited June 15, 2017 by _The Doctor__ Quote Link to comment Share on other sites More sharing options...
spookt Posted July 3, 2023 Share Posted July 3, 2023 (edited) I just picked one of these up and it came with the manual and original disk. I'm attaching an ATR of the disk. The handler loads on boot and is also on the disk as an OBJ file. There's a comms program on there too, type RUN "D:AMOD*.*" to load it from basic. I'll have a look at scanning the manual once I've flattened it out UCall_Model_A_Disk_Software.atr Edited July 3, 2023 by spookt Picture so it happened 😉 8 2 Quote Link to comment Share on other sites More sharing options...
+Allan Posted July 3, 2023 Share Posted July 3, 2023 Thanks, @spookt Looking forward to looking at the manual. Quote Link to comment Share on other sites More sharing options...
+DrVenkman Posted July 3, 2023 Share Posted July 3, 2023 1 hour ago, spookt said: RUN "D:AMOD*.*" to load it from basic I’m on a tablet and can’t look at the ATR, but I remember using software called AMODEM back in the day - I wonder if it’s the same software? Quote Link to comment Share on other sites More sharing options...
+MrFish Posted July 3, 2023 Share Posted July 3, 2023 Here's the title screen. 4 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.