ZIP file includes Pico2 and Web2 .uf2 files
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Does serial debug still work? Basic works and returns proper version but If I plug in serial, I can’t debug over serial. Have I forgotten a step, does it have to be enabled?
If serial debug requires the PicoCalc to send data out the serial port, then, no, it won’t work. The PicoCalc can receive serial data but not send it. This might be fixed soon. A very talented person is working on it. No, it’s not me. I’m just a hack. Stay tuned for further developments!
I found three items in the original source code that may need a bit of attention:
The Edit command has a problem when the display colors are set to a light background with a dark foreground (ie Black,White instead of Green,Black). The call to ClearRuntime causes a reset to the configured colors instead of WHITE on BLACK.
+++ PicoMiteRC23/Editor.c 2025-12-07 11:37:18.637569221 +0100
@@ -489,6 +489,8 @@
#endif
if (Option.ColourCode)
{
+ OriginalFC = gui_fcolour;
+ OriginalBC = gui_bcolour;
gui_fcolour = WHITE;
gui_bcolour = BLACK;
}
@@ -504,7 +506,9 @@
if (cmdfile)
{
ClearVars(0, true);
+ int tf = gui_fcolour; int tb = gui_bcolour;
ClearRuntime(true);
+ gui_bcolour = tb; gui_fcolour = tf;
}
if (HRes == 640 || HRes == 512 || HRes == 848 || HRes == 720)
{
@@ -1437,8 +1441,12 @@
#else
Option.Refresh = RefreshSave;
#endif
- if (c != ESC && TextChanged && fname == NULL)
+ if (c != ESC && TextChanged && fname == NULL) {
+ gui_bcolour = OriginalBC;
+ gui_fcolour = OriginalFC;
+ ClearScreen(gui_bcolour);
SaveToProgMemory();
+ }
if (c != ESC && TextChanged && fname)
{
int fnbr1;
In External.c a party event 
has been inserted:
+++ PicoMiteRC23/External.c 2025-12-07 11:28:15.741030331 +0100
@@ -115,7 +115,7 @@
"PIO1",
"PIO2",
"FFIN",
-#ifdef PICONITE
+#ifdef PICOMITE
"KEYBOARD"
#endif
#else
And the last item could have, but did not, been involved with the serial port problem:
+++ PicoMiteRC23/PicoMite.c 2025-12-07 11:40:31.745802852 +0100
@@ -5486,7 +5486,7 @@
// negative timeout means exact delay (rather than delay between callbacks)
OptionErrorSkip = false;
#ifndef USBKEYBOARD
- if (!(Option.SerialConsole == 1 || Option.SerialConsole == 2) || Option.Telnet == -1)
+ if (!((Option.SerialConsole & 3) == 1 || (Option.SerialConsole & 3) == 2) || Option.Telnet == -1)
{
uint64_t t = time_us_64();
while (1)
All the above are part of the original sources and are not in the adaption for PicoCalc.
Here we go again, RC24 coming soon …..
Well, at least we know what changes should be made if necessary!
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I think your last change is wrong although the inverted logic is scrambling the few brain cells I have left. Option.SerialConsole appears to encode whether the serial port used is com0 (bit 0) or com1 (bit 1) but also whether the console output should go both to the serial port and to the USB CDC output (bit 2). If bit 2 is set then the USB CDC device should be enabled but with your change it won’t be.
I will remove this line for RC24, I don’t think it will change much.
Where will the source code be? Do you have a GitHub fork?
I don’t have git hub and I do not want to learn another application system. In the past I have had contact with Michael Adcock about giving the changes to him so that he can publish the new version.
Is there any new release after R23?
Yes. The final version is out. Download the latest revision.
Awesome, thank you very much.
I tried installing RC27A. I have a Pico2W. I tried both the Pico 2 and the Pico 2W uf2 images. Both will boot, give me the initial screen, then the system shuts off in about 5 seconds. IIRC this happened with R25 also.
When the system shuts off, the green LED on the Pica2W starts flashing, if that means anything.
Did you nuke your system first? That helps sometimes. I’ve been using RC27 with no problem on two PicoCalcs. One has a Pimoroni Pico 2 and the other has a Raspberry Pi Pico 2W. I wonder if Ernst (the author of the ports) could shed any light on this.
How can I get in touch with him?
Look about seven messages above this one. There’s a post from him. If you click on his name, one option is to message him.
At this moment I suggest to use RC26 because that version follows the official release and I am having a few problems with RC27 that appeared during regression testing. RC27 is “special” because I am trying to do what the original does not provide: WebMite on Pico1W, PSRAM on Pimoroni Pico Plus 2, WebMite on Pimoroni Pico Plus 2 W with PSRAM.
A note on PSRAM: the PSRAM mounted on the PicoCalc board is not of much use because it is not tightly connected to the RP2350 chip, is is connected to the Pico2 board using GPIO. For more information see “Chapter 3. Flash Memory” in the “Hardware design with RP2350” document.
Please be aware that these (“experimental”) versions are not intended for everyone, once completed the changes I made can be taken over into the “official” PicoCalc version. I hope to finish before the end of the year …
I see one problem already. The following program works in generic versions of PicoMite but gives an Argument count error in the Astro line RC27:
'
DIM FLOAT lat = -41.12545, long = 145.90739
DIM FLOAT alt1,az1, ra_out1, dec_out1
DIM FLOAT alt2,az2, ra_out2, dec_out2
DIM mystar$ = "Acrux"
DIM testTime$ = DATETIME$(NOW())
PRINT testtime$
location testtime$,lat,lon
astro Rigel alt1,az1 , ra_out1, dec_out1
PRINT alt1,az1, ra_out1, dec_out1
astro Betelgeuse alt2,az2 , ra_out2, dec_out2
PRINT alt2,az2, ra_out2, dec_out2
Output:
20-12-2025 03:52:54
[10] Astro Rigel alt1,az1 , ra_out1, dec_out1
Error : Argument count
Quite possibe 
But this must be a problem with the the original picomite because RC27 is based on the final release (RC26) + changes that were uploaded afterwards. My changes are only for PicoCalc adaption. At the moment I am deep into getting WebMite+PSRAM to work, when completed I may have time to look at your problem.