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vegipete

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Joined: 29/01/2013
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Posted: 03:03am 02 Apr 2022

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Am I going nuts?

> list
for i = 0 to 10
�read a,b,c
next i
data 0,0,0,1,1,1,2,2,2,3,3,3,4,4,4,5,5,5,6,6,6,7,7,7,8,8,8,9,9,9,10,10,10

> run
Error in line 2: Syntax

A minor change of breaking the data into two lines clears the error. What is going on?

> list
for i = 0 to 10
�read a,b,c
next i
data 0,0,0
data 1,1,1,2,2,2,3,3,3,4,4,4,5,5,5,6,6,6,7,7,7,8,8,8,9,9,9,10,10,10

> run

>

===============
Any thoughts on the my posting just above? My CMM2 freezes from time to time if 3D objects are drawn too close to the origin, perhaps if some vertices are crossing the z=0 boundary.
Edited 2022-04-02 13:08 by vegipete

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matherp
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Joined: 11/12/2012
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Posted: 06:55am 02 Apr 2022

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Quote Am I going nuts?

The CMM2 supports a maximum of 32 parameters on a line. Because the data statement accepts expressions these are considered parameters. This limitation is specified in the MMBasic Implementation Characteristics in the manual.

I haven't had a chance to look at the 3D issue - sorry

matherp
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Posted: 09:11am 06 Apr 2022

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V5.07.02b5

https://geoffg.net/Downloads/Maximite/CMM2_Beta.zip

Fixes crashing bug when drawing polygons with y coordinates exceeding 1080 (i.e.off screen) as used in the 3D rouitines

vegipete

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Posted: 03:43pm 06 Apr 2022

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Quote The CMM2 supports a maximum of 32 parameters on a line.

And wouldn't you know it, my example had 33 parameters. Doh! Thanks for explaining.

Quote Fixes crashing bug when drawing polygons with y coordinates exceeding 1080 (i.e.off screen) as used in the 3D rouitines

Awesome, I'll test tonight.

On the topic of 3D routines, the 3D Engine manual says

Quote If the optional parameter fill() is omitted then the 3D object will be drawn as a wireframe

When I try this, the faces away from the camera are not drawn, even though I can see through the object. Do I need to set 'nocull' to 1? If so, the manual should mention this.

As always, a huge thanks to you Peter for your awesome programming work, giving us such a slick toy to play with.

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vegipete

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Posted: 03:02am 07 Apr 2022

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Alas, V5.07.02b5 seems to have broken something in the 3D engine - objects are no longer drawn with solid faces. Behaves the same as if the fill() parameter is omitted.

Edit: Is there a chance that this latest version is somehow shutting down the VGA output after a period of time? I power cycled my monitor a few times, thinking it had failed because the screen went blank. Reverting to b4 and the monitor is working normally again.
Edited 2022-04-07 13:59 by vegipete

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matherp
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Posted: 08:20am 07 Apr 2022

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Oops - sorry. Did the testing on MMB4W and left a diagnostic return in the H7 code.

Please download again.

There is a sleep timer on the screen which is set with an option. Check your options and the manual to see if it is set.

thwill

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Joined: 16/09/2019
Location: United Kingdom
Posts: 4037

Posted: 03:21pm 11 Aug 2022

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New "bug", this may well get filed in the category of "weird sh*t that only Tom would try", but here we go:

> 480MHz Colour Maximite 2 G2
MMBasic Version 5.07.02b2
Copyright 2011-2021 Geoff Graham
Copyright 2016-2021 Peter Mather

> Dim i% = Mm.Info(Exists Dir ".")
Expected a number

> ? Mm.Info(Exists Dir ".")
0

> i% = Mm.Info(Exists Dir ".")
Expected a number

>

Of course Mm.Info(Exists Dir ".") should return 1 which is widely recognised as a number, but not a prime

.

Best wishes,

Tom
Edited 2022-08-12 01:33 by thwill

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matherp
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Posted: 05:53pm 11 Aug 2022

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V5.07.02b6

https://geoffg.net/Downloads/Maximite/CMM2_Beta.zip

Fixes bug in MM.INFO(EXISTS DIR)
Fixes possible crashing bug in GUI DELETE found in PicoMite

thwill

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Posted: 01:57pm 12 Aug 2022

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matherp said V5.07.02b6

Thanks Peter, that addresses the EXISTS DIR "." problem. Took me a while to remind myself how to re-flash the CMM2, twelve months ago I used to do that two or three times a day.

I know it is dismissable as nonsense, but is there any chance you could give an opinion on what you think the output should be given the empty string?

CMM2:

> ? Mm.Info(Exists Dir "")
1
> ? Mm.Info(Exists File "")
0

Note that the CMM2 has no MM.INFO(EXISTS f$) command .

MMB4W:

> ? Mm.Info(Exists Dir "")
0
> ? Mm.Info(Exists File "")
0
> ? Mm.Info(Exists "") � �
0

MMB4L:

> ? Mm.Info(Exists Dir "")
1
> ? Mm.Info(Exists File "")
0
> ? Mm.Info(Exists "") � �
1

My initial thought is that only MMB4W has this correct ... note I'd rather it didn't throw an ERROR as handling them in MMBasic is not particularly nice.

EDIT: And on second thoughts you could argue that commands that operate on directories like CD/DIR/LS/FILES all treat no argument/directory as meaning the current directory which would make the behaviour of the CMM2 and MMB4L correct.

Best wishes,

Tom
Edited 2022-08-13 00:14 by thwill

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matherp
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Posted: 04:37pm 13 Jan 2023

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V5.07.02b9

https://geoffg.net/Downloads/Maximite/CMM2_Beta.zip

Fixes bug in ON ERROR SKIP (thanks Tom)
New commands

LINE AA x1, y1, x2, y2 [, LW[, C]]
Draws a line with anti-aliasing . The parameters are as per the LINE
command above. However this version will use variable intensity values of
the specified colour to reduce the �staggered� quality of diagonal lines. In
addition this version can draw diagonal lines of any width.

PWM channel,frequency, duty1 [,duty2] [,duty3] [,phase
Phase is a new parameter that causes the waveforms to be centred such that a wave form with a shorter duty cycle starts and ends equal times from a longer one

New Functions
MATH(CRC8 array()_or_string$, [length,] [polynome,] [startmask,] [endmask,] [reverseIn,] [reverseOut] - calculate an 8 bit CRC
MATH(CRC12 array()_or_string$, [length,] [polynome,] [startmask,] [endmask,] [reverseIn,] [reverseOut] - calculate a 12 bit CRC
MATH(CRC16 array()_or_string$, [length,] [polynome,] [startmask,] [endmask,] [reverseIn,] [reverseOut] - calculate a 16 bit CRC
MATH(CRC32 array()_or_string$, [length,] [polynome,] [startmask,] [endmask,] [reverseIn,] [reverseOut] - calculate a 32 bit CRC

matherp
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Posted: 02:47pm 19 Dec 2023

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V5.07.02b10

https://geoffg.net/Downloads/Maximite/CMM2_Beta.zip

Math routines up-to-date with all the goodness from the PicoMite (but much faster)

Added BLIT/SPRITE MEMORY as per the PicoMite - should make porting Petscii much easier
Added LINE PLOT commmand
Added PAGE MERGE from1, from2, to [,colour] ' colour defaults to BLACK

The copies page "from1" to "to" but overlays any pixels in "from2" that aren't "colour"
Edited 2023-12-20 03:41 by matherp

vegipete

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Posted: 06:18pm 19 Dec 2023

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Quote Added BLIT/SPRITE MEMORY as per the PicoMite - should make porting Petscii much easier

4 bit colour, I presume? Can the PicoMite colour names be added to the CMM2 recognized colour names?

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matherp
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Posted: 07:07pm 19 Dec 2023

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Done, I've updated the beta. Also fixed a bug for overlapping BLIT regions when in 32-bit colour mode
Edited 2023-12-20 05:10 by matherp

LeoNicolas

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Posted: 07:35pm 19 Dec 2023

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Matherp, are you adding these fixes/features to the MMB4W?

matherp
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Posted: 11:31am 07 Feb 2024

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Minor update to fix bug in reading pixels in 8-bit mode just posted - no version change

https://geoffg.net/Downloads/Maximite/CMM2_Beta.zip

matherp
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Posted: 06:47pm 13 Apr 2024

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V5.07.02b11

https://geoffg.net/Downloads/Maximite/CMM2_Beta.zip

Fixes a "day-one" bug in the PAUSE command that will happen on average something less than once every 50,000 calls