Dropcheck Posted December 8, 2018 Author Share Posted December 8, 2018 Now that I extracted the PCB layers, are you planning on tracing the circuit? If not, or if you don't have the time yet, I volunteer to do it myself. I'm looking for a bite sized project and this seems manageable with a clear end goal. Go for it. 2 Quote Link to comment Share on other sites More sharing options...
Kyle22 Posted December 9, 2018 Share Posted December 9, 2018 Just a thought: If this is going to happen, why not do an UltraSpeed type ROM for it that could transmit / receive data at 52K Baud? Increase the outgoing rate to 19.2K. Also, use some SIO lines for hardware handshaking WITHOUT LEAVING CONCURRENT MODE. That would be my goal. 1 Quote Link to comment Share on other sites More sharing options...
Mathy Posted December 9, 2018 Share Posted December 9, 2018 Hello Kyle Why limit the hardware to 52K and 19K2? Sincerely Mathy Quote Link to comment Share on other sites More sharing options...
Kyle22 Posted December 10, 2018 Share Posted December 10, 2018 so you have some CPU time left to do things other than manage incoming data. Quote Link to comment Share on other sites More sharing options...
+Nezgar Posted December 10, 2018 Share Posted December 10, 2018 With a fast enough SIO bit rate, and a buffering serial controller, maybe you don't even need concurrent mode. Just continuously poll for incoming data as it's available, and the controller would automatically handle hardware flow control depending on it's own buffers. The other signals can then all be sent out of band. And can be interleaved with access with other SIO devices. The bit rate over SIO can also then be completely independent of the bit rate over RS232, since most of the higher SIO divisors don't line up with standard serial rates. This would be a completely new way of doing things of course... completely new handler... 2 Quote Link to comment Share on other sites More sharing options...
Mathy Posted December 10, 2018 Share Posted December 10, 2018 (edited) Hello Kyle so you have some CPU time left to do things other than manage incoming data. You can slow communication via software if needed. If hardware supports the highest speed POKEY can handle, you can use high speeds when possible and lower speeds when needed. And when it comes to CPU time: If the hardware can handle the highest speed the Atari can handle, you could just send the data out (or receive it) in as short a time as possible, leaving the rest of the time to do other stuff, instead of "multitasking" between data sending/receiving and all the other stuff. Sincerely Mathy Edited December 10, 2018 by Mathy 3 Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted December 11, 2018 Share Posted December 11, 2018 the fastest modems were only ever 56k and 33k and most used 33k with shotgunning for 66.? K send and receive, for gaming and serving 56k mode was always crap. The faster rates using buffering sounds attractive. Git R done. 2 Quote Link to comment Share on other sites More sharing options...
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