V6.03.00RC0

PicoMiteRP2040V6.03.00RC0.zip
PicoMiteRP2350V6.03.00RC0.zip

editor now supports Ctrl-A to launch the beautifier
Tidy up of LIST command with short/no file loaded
Fix the no-wrap issue.

Summary of changes from V6.02.01

All versions
Performance improvements for FOR/NEXT loops and IF/THEN/ELSE/ENDIF constructs
OPTION PROFILING ON/OFF 'see option-profiling-cache.pdf for details
The editor now supports editing long lines without splitting them or using continuation lines
DO UNTIL/LOOP now implemented
Support for data sharing between two PicoMites over 4 and 8 bit parallel I/Fs see MEMORY_SHARE_User_Manual.pdf for more details
Mandelbrot easter egg
Adds support for escape sequences with OPTION ESCAPE ON in the INPUT statement prompt
Extends OPTION GPS to allow baudrates over 65535
Reduced heap utilisation for BLIT WRITE
Fixes bug in mm.info(boot count) when not in the root directory
LIST COLLISIONS 'This is a diagnostic that shows any variable names that hash to the same number.
LIST command can now scroll forwards and backwards through the file or program

All versions except PICOMITEMIN
Beautify function in the editor (F12/Ctrl-A)
In-built Filemanager (command FM) 'see FM_User_Manual.pdf
FM_User_Manual.pdf

PicoMiteRP2040, All RP2350 variants except WebMiteRP2350
User configurable "Just-in-time" bytecode conversion 'see option-profiling-cache.pdf for details
option-profiling-cache.pdf

USB versions
FLASH UF2 fname$  'flashes a RP2040/Rp2350 in boot mode with the uf2 file specified
Fixes bug in mouse double click detection
Support for USB CDC hosting for up to 4 CDC client devices, see USB_CDC_Host_User_Manual.pdf
USB_CDC_Host_User_Manual.pdf

Support for USB flash drive as drive C:

RP2350 versions
Enhancements to Stepper command, including supporting an A axis and GCOde as MMbasic strings' see Stepper_Reference.pdf
Stepper_Reference.pdf


PICOMITEMIN
New cut down build omitting
Structures
Draw3D command and function
GUI
Turtle graphics
Regular expression support
Help command
VS1053 support
SSD1963 support
ILI9163
SSD1331
ST7735 but not ST7735S
ILI9481IPS
ILI9481
ILI9488P
GC9A01
Virtual displays
Editor F12
FileManager

Non VGA/HDMI versions
Fixes backlight for SSD1963 displays when external PWM pin is used for control
Increased SPI speed for ILI9341 displays
Fixes various bugs in SSD1963 buffered drivers
Edited 2026-05-05 20:16 by matherp

---

@Peter,

I assume 2040VGA did not get TRACECACHE because of the highly tuned memory map and performance ? But it does get FM.

60300rc0 is faster on 2040VGA than 60200.

Volhout
Edited 2026-05-05 20:24 by Volhout

FM just increases the size of the flash image a bit. Tracecache needs 6-8K of RAM for memory resident code which would cut the VGA heap from 100K to 92K. Add to that the ram used for the cache itself when a program is running and my view is that it doesn't make sense. Anyone can build any version with cache if they want, it is just a #define in the code needed to enable it
Edited 2026-05-05 20:30 by matherp

@Peter,

60300rc0 for 2040VGA
load PETSCII robots main program (the program is beautified by MMEdit).
F4 (edit)
ctrl-A (beautifier), let it chew for few seconds.

The indenting diverts from MMEdit beautifier in second half of the listing.
The DATA statements at the end of the program are indented 30+ positions.

Regards,

Volhout

I didn't get the memo:  

PICOMITEMIN is RP2040 only, correct?

I really like the new Beautify function, but I think blank lines are very useful for readability.
There are blank lines in many of the (demo) sources and those aren't so easy to understand without the logical grouping that simple blank lines provide.
Maybe blank line removal could be optional?

@Peter,

60300rc0 2040VGA clean install
option VGA design 2
FM
edit (F2) any file on B drive (even a small 768 bytes basic program)

error: not enough heap memory

Volhout

  Quote  

edit (F2) any file on B drive (even a small 768 bytes basic program)

Not for me. Try a clear_flash

  Quote  

The indenting diverts from MMEdit beautifier in second half of the listing.

Caused by single line FOR statements (and possibly other similar) - fixed. Try this


PicoMite.zip


tested on robots.bas edited from FM with no issues
Edited 2026-05-05 22:36 by matherp

A strange thing is happening with the new version here:

When using the internal editor the beautifier starts every time when i press cursor left at the beginning of any line except the first. Happens with Teraterm and MMEDIT/MMC. Makes editing really difficult.
Tested on PicoMiteRP2350V6.03.00RC0.uf2 with

PicoMite MMBasic RP2350A V6.03.00RC0
and
PicoMite MMBasic RP2350B V6.03.00RC0
Edited 2026-05-05 23:02 by fred777

Observations on 60300rc0 (also second version):

1/ When there is a large program (i.e. 50k) in program memory, and you do not explicitly remove it with NEW, then open FM, select a file, then press F2 to edit, you get the "not enough heap" problem.

2/ When you get the "not enough heap" problem, a file called ".vars", size 131k,  is left behind on the A:/ drive.



Volhout

P.S. I assume you need 132kb free on A drive to use the editor when in FM ? Maybe note that in user manual. Some may not have this luxury (Game*Mite).
Edited 2026-05-05 23:53 by Volhout

  Quote  

When there is a large program (i.e. 50k) in program memory, and you do not explicitly remove it with NEW, then open FM, select a file, then press F2 to edit, you get the "not enough heap" problem.

Ah Ha - that was the clue

Try this

PicoMite.zip

V6.03.00RC1

PicoMiteRP2040V6.03.00RC1.zip

PicoMiteRP2350V6.03.00RC1.zip


Fixes memory issue when a large file is loaded in memory and you EDIT a file by name either at the command prompt or via FM
Fixes bug in editor calling beautify with left arrow
Fixes bug in beautify when NEXT is on the same line as FOR
Changes beautify so that the blank line comes after a function or subroutine rather than before, This avoidss separating a comment block from the associated function
Edited 2026-05-06 00:20 by matherp

Volhout

Peter,

A good solution for inserting a blank line with F12.



Jan.

Hi Peter, nice to see you’ve moved from beta to RC. The version has really come a long way!

In the meantime, I’ve picked up a PicoCalc to test.

I’m surprised to find that, unfortunately, you can’t control the screen brightness using the BACKLIGHT command, even though it works with the keyboard shortcut. It would be great to control the brightness via the program.

Also, unfortunately, the RTC on the STM32 (BIOS 1.6) isn’t being read, or can’t be written to either?!



Is this really I2C or is it I2C2? Something is responding at address 1F...
Otherwise, I can't read anything on the I2C bus either;
is that probably not possible because it's reserved for the system? Is this because of reading the keyboard?
Could you please explain some background information on this? Thanks.

  fred777 said  

I really like the new Beautify function, but I think blank lines are very useful for readability.
There are blank lines in many of the (demo) sources and those aren't so easy to understand without the logical grouping that simple blank lines provide.
Maybe blank line removal could be optional?

I agree. Indenting is a useful function but I like to space out my programs in a certain way and beautify ruins my logical groupings.

I know nothing about the STM32 RTC on the PicoCalc or even whether it can be accessed. You can control the backlight on both the keyboard and the screen using OPTION BACKLIGHT LCD and OPTION BACKLIGHT KBD

  matherp said  

I know nothing about the STM32 RTC on the PicoCalc or even whether it can be accessed. You can control the backlight on both the keyboard and the screen using OPTION BACKLIGHT LCD and OPTION BACKLIGHT KBD

Thanks — the 'OPTION BACKLIGHT LCD' setting works!
Can I also read the current value?
I'm also missing the screensaver option: 'OPTION BACKLIGHT LCD 0' –-> backlight off.
I always use that to activate 'power-saving mode', where the backlight reactivates when a key is pressed or there is activity.

This also works with the keyboard! (=0) :-)

I don't know if the AI (Gemini & Claude) is just making things up, but this is what I managed to get out of it.

https://github.com/shtirlic/picocalc_southbridge
- internal RTC access through dedicated I2C registers,

Apparently, this is also supposed to be included in BIOS 1.6? But to be honest, I don't really know any more than that.

If I move up/down all values are correct until 0.2
Going to 0.3 or to -0.3 and back to 0 I get -2.775557562e-17 instead of 0

  dddns said  

If I move up/down all values are correct until 0.2
Going to 0.3 or to -0.3 and back to 0 I get -2.775557562e-17 instead of 0

Option explicit
Dim float a
Do
 Select Case Asc(Inkey$)
 Case 128
   Inc a,0.1
 Case 129
   Inc a,-0.1
 End Select
 Print @(100,100)"                ";
 Print @(100,100)a;
Loop

?a
-2.775557562e-17

PicoMite MMBasic USB RP2350B Edition V6.03.00RC1

That's an inherent feature of floating point.

It's akin to using a calculator, divide 1 by 3, getting 0.33333 etc, multiplying by 3 and you don't get 1.

John
Edited 2026-05-06 06:23 by JohnS