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Forum Index : Microcontroller and PC projects : PicoMite 6.00.02 prospectus
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| matherp Guru  Joined: 11/12/2012 Location: United KingdomPosts: 10232 |
Below is my current thinking for 6.00.02. Please let me know if I've missed any reported bugs in 6.00.01 General comments The firmware will implement the ability to save the entire variable space to the A: drive or PSRAM (if available) and subsequently restore it. This is completely transparent to the user although saving to the A: drive does take a second or so and there must be free space of just less than 256KB available. This allows commands that historically have required access to the complete variable space to be run from within a program (e.g. FILES). Specifically, this allows the implementation of a CHAIN command When PSRAM is enabled 2MB of the available PSRAM is reserved for system use. The remaining space(typically 6MB) is available as normal MMBasic variable space This allows 5 RAM program slots to be created and used both from within a program and at the command line. Of course RAM program slots will not survive a power cycle but they will survive a system reset and can be loaded from within a flash based program Bug fixes Fixes bug in forward references in PIO assembler when the starting line number is > 1 Fixes bug in PRINT @(x,y) when outputting to a computer console By default disables heartbeat and enables access to all pins on RP2350B Allows selection of GP19 for PSRAM PIN New Supports ; at the end of LONGSTRING PRINT to suppress the CR/LF I2C(2) OPEN now supports 1000 as a speed FILE command can now be used in a program CHAIN fname$,cmdline$ ' Allows the program to run another program with the variable space preserved EDIT FILE command will now only be memory limited the same as EDIT SAVE CONTEXT [CLEAR]' saves the variable space and optionally clears it LOAD CONTEXT ' restores the variable space to the previously saved state FLASH SAVE [fname$] ' the new optional parameter allows a flash slot to be loaded from disk from within a program or at the command line RAM command (RP2350 with PSRAM only) functions like the FLASH command with 5 program slots available in PSRAM SHIFT-F3 to F10 now work for computer console. NB: Shift-F1, F2, F11, and F12 don't appear to send codes so can't work OPTION HEARTBEAT ENABLE [pin] 'allows the user to select a pin for a heartbeat (Specifically targeted at RP2350B) |
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twofingers Guru Joined: 02/06/2014 Location: GermanyPosts: 1575 |
I missed that. Thanks, much appreciated! FILES command can now be used in a program? It all sounds very valuable to me.  Regards Michael causality ≠ correlation ≠ coincidence |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10232 |
I've also played with this - does it make sense? Note that BYVAL is effectively a unary operator and must be included in the call and can't be specified in the subroutine itself  |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 5056 |
Since I was not the only one missing the layer L being a normal framebuffer in mode 1, there may be merit in adding this functionality in 6.00.02. Giving that mode 1 is 1 bpp (black/white) the functionality to use black as transparent color in L would only cost 1 ARM instruction (N logicOR L) when reading the next row of pixels from memory. I understand it would eat much more resources when you would need to color analyze the tiles. That could be difficult real time. But the single OR might fit assuming "black = transparent". I am not sure we would ever need to have L and F both when they have identical functionality. Then you might remove it. Volhout PicomiteVGA PETSCII ROBOTS |
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javavi Guru Joined: 01/10/2023 Location: UkrainePosts: 459 |
PicoMiteVGA RP2040 V6.00.1 Commands MODE 1 CLS LOAD IMAGE file$ LOAD JPG file$ The image is loaded not from the zero position of the screen (by default), but one line below! :( MODE 1 LOAD PNG "file.png" Error : Expected a string |
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| javavi Guru Joined: 01/10/2023 Location: UkrainePosts: 459 |
I miss this too... |
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| Bleep Guru Joined: 09/01/2022 Location: United KingdomPosts: 625 |
Oh bugger, now I'll have to get a Pico that has/allows easy connection of PSRAM, wonder how easy/possible it'll be to unsolder a older Pico for upgrade, not very I suspect. :-( Think I'll wait untill RP release a new stepping of 2350, which I suspect is on the way, due to the unavalability of raw chips at distributors. |
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| twofingers Guru Joined: 02/06/2014 Location: GermanyPosts: 1575 |
Do we need that? Isn’t that identical to a%=7 Print double((a%)) Print a% Print double(a%) Print a% Function double(i%) i%=i%*2 double=i% End Function ?? Isn't a note in the manual enough? causality ≠ correlation ≠ coincidence |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10232 |
LOAD PNG is not available on the RP2040 - not enough memory No it isn't - just tested both |
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thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 4301 |
I wouldn't, but <shrugs shoulders>. Is there a particular difficulty in adding adding it to the SUB prototype like VB ... though even then I do wonder whether you should. I thought you were going to take a break, is it raining ? Happy New Year, Tom Edited 2025-01-15 23:07 by thwill MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10232 |
Yes!!!!!!! |
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| thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 4301 |
It's the level of detail in your reply that I find most helpful  . I'll get my coat.Edited 2025-01-15 23:19 by thwill MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| javavi Guru Joined: 01/10/2023 Location: UkrainePosts: 459 |
MODE 1 TILE Height 12 LOAD IMAGE "file.bmp" Please check the image loading after the command TILE HEIGHT 12 ? Edited 2025-01-15 23:58 by javavi |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10232 |
You must know the code as well as me now. As far as I can see based on a quick look it would be a complex change to definedsubfun |
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| thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 4301 |
I doubt that is true, you've been working with the MMBasic code much longer than I have even if I might have been programming in C longer than you. OK, right, so probably not a fundamental issue, just an issue of time and willingness which I quite understand, I simply don't have the time even if I could generate the will. In addition it's much harder for the PicoMite (c.f. MMB4L) since you aren't able to build MMBasic on the target platform, the build/test cycle is so much longer. Best wishes, Tom MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| bfwolf Regular Member  Joined: 03/01/2025 Location: GermanyPosts: 75 |
Yes! But using an unary operater like "ByVal" would be more expressive!  Maybe you should consider in advance whether using it as a "unary operator" when calling a sub/function could prevent a future use of "ByVal" in a sub/function prototype declaration? If that were the case, perhaps use a different name for the "unary operator"? E.g. "AsVal"? bfwolf |
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vegipete Guru Joined: 29/01/2013 Location: CanadaPosts: 1129 |
Suppose there were a preprocessor. Then we could #define ByVal 0+ plus many other silly things.Visit Vegipete's *Mite Library for cool programs. |
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| thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 4301 |
This works in MMB4L: MMBasic for Linux x86_64 v0.7-alpha.1 Copyright 2011-2024 Geoff Graham Copyright 2016-2024 Peter Mather Copyright 2021-2024 Thomas Hugo Williams > load "byval.bas" > list #define "ByVal", "0+" a%=7 Print double(ByVal a%) Print a% Print double(a%) Print a% Function double(i%) i%=i%*2 double=i% End Function > run 14 7 14 14 > It should also work on the CMM2, MMBasic for Windows, and possibly the PicoMite using the "CMM2 RUN" command. Best wishes, Tom Edited 2025-01-16 05:46 by thwill MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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Geoffg Guru Joined: 06/06/2011 Location: AustraliaPosts: 3284 |
Peter, BYVAL is a great addition, but it really must be a qualifier in the definition of a SUB (not in its call). If you like, I can develop the code for it so that it would be a drop in lump of code for 6.00.02. Geoff Geoff Graham - http://geoffg.net |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 5056 |
Geoff, Peter, When working on 5.09.00 series, and later 6.00.00 and 6.00.01 many times there where people that where confused, because they used (the official available) 5.08.00 as published on Geoff's site. Sometimes about the firmware, sometimes about the user manual. While progressing from 6.00.01 official release to 6.00.02 and the further future, would it be an idea to add new features to 6.00.02, but continue to update 6.00.01 with bug fixes (as happened with webmite). I refer to fixes that have no user manual impact, real bug fixes. Maybe to explain with a practical example: I am working on a PIO UART (3rd and 4th UART in a pico). The code can not be assembled because a bug in the pio assembler. I would rather publish a solution that works with 6.00.01 code, then a solution that is based on 6.00.02 alpha 1/2/3, where people have to search for the firmware until 6.00.02 is released. In stead of using 6.00.02 alpha 1/2/3, I rather publish a "work around" solution based on 6.00.01, just to avoid the inevitable "where do I find that firmware ?". What are your thoughts, Volhout PicomiteVGA PETSCII ROBOTS |
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