While I had my #Meshtastic node on the workbench I thought I might as well hook it up to a CP/M board, so here's me sending and receiving using an SC126 designed for the #RC2014 ecosystem.
https://smallcomputercentral.com/rcbus/sc100-series/sc126-z180-motherboard-rc2014/
So... did it work? Did the fibre survive? Did it reach? Do the networking switches do their job?
Yes!
The fibre works! I have network in #RC2014 Towers!
Still a lot to sort out yet, but the biggest hurdle is out of the way now.
So how come there isn't an #rc2014 webring yet?
I’ve now fitted the case to my #RC2014 Picasso, and it looks very nice indeed.
I also found the Easter Egg, but I’m not sure it’s working for me.
That’s my #RC2014 Picasso built and running.
Apparently there is an Easter Egg I need to find built into it.
I know that a few of you have built your #RC2014 Mini II Picasso. Now that Easter is upon us, how many of you have found the #EasterEgg in it?
Did you even know there is a Easter Egg hidden inside?
A new piece of art has arrived #picasso 
@rc2014 #RetroComputing #VintageComputing #z80 #rc2014 #zilog
Hey @rc2014 my RC2014 Mini II Picasso is beautiful! And it booted up correctly first time! (don't know if I was a little disappointed to not be troubleshooting! ;-) )
Now it's time to connect it to other things... the fun awaits! :-)
I have a breadboard 6502 (ala Ben Eater) that's dying to meet it.
Also present are the reset, IRQ, and NMI active-low interrupt signals.
All in all, you'll be able to design almost anything you could do for #RC2014 if you have a mind to.
When I thought about the #RC2014 Mini II Picasso, art was absolutely central to my design.
No, really it was! Look. Right there in the centre. Art!
That turned out pretty well, considering I'm still pretty new at this OpenSCAD game :)
Files here: https://github.com/diyelectromusic/sdemp_3dprints/tree/main/RC2014-Base
My dual keypad module for the #RC2014.
This takes advantage on the Z80 IN instruction where the value of A is output on the upper 8 address lines. For keypad 1 I load either 1,2,4, or 8 into the A register, then read the value from the defined IO address. This puts a high across the row, and if a button is being pressed the row that button is in will also be high. In this case I am outputting the values of the column and row to the digital IO module to prove it is working.
I have been away for a fantastic few days, but with limited and sporadic access to Mastodon. I think I have caught up with all the #RC2014 posts now, but if there's anything I have missed, or you're still waiting for a reply, please let me know.
+++ SYSOP NEWS +++ SYSOP NEWS +++
As you may remember, RC-BOX BBS - the world's first and (currently) only RC2014 based BBS - has been struggling with connectivity issues.
The good news: I have finally been able to successfully mitigate these.
Some background info: in October last year, I decided to do some maintenance on the system, updating my WiFi modem firmware and replacing the SC132 serial I/O module (using a 6.144 KHz crystal for a fixed 9600 bps) with its cousin, the SC110 serial I/O module which features a CTC chip so it can dynamically set any baud rate.
Turns out that while the module is techincally 100% okay, it sometimes locks up when being used with the BYE.COM program for CP/M.
I think this has to do with BYE.COM setting the CTC to the selected bps during initializiation (which happens after each hangup). For some reason, this often works but occasionally causes the SIO/2 to lock up.
Sometimes, without any reason, BYE.COM would drop into an +++ATH loop although no one was connected, not being able to actually perform the AT command.
It took me weeks to finally realize this, because I was so sure the problem originated from the Zimodem firmware and because the issue only showed up occasionally. It was very annyoing to debug.
So as a result of this finding, I've put the SC132 with the fixed 9600 bps back into the system. Since then, no more of these issues occurred.
As always, you can find all info on how to connect to RC-BOX BBS in my profile info.
P.S.: so now I think the problem originates from the BYE.COM code. But since everything is working properly again, I don't have the desire to dig into the BYE.ASM code any time in the future. There are other projects that I'd like to go on with first.
#rcbox
#bbs
#rc2014
#rc2014bbs
#retrocomputing
#newretro
#z80
I've written up how I got my ZX Printer compatible Alphacom 32 printer working on my #rc2014
https://www.robertprice.co.uk/robblog/using-a-zx-printer-on-an-rc2014/
