PropBasic

Fixes implemented in version 1.03

2010-08-17T05:55:00.000-07:00

Just an update on a couple of fixes that I have implemented so far.

1) RDWORD buffer($1C0), temp
Using a hex value as an offset for RDWORD, RDLONG, WRWORD, WRLONG would cause an error.

2) name HUB STRING(10) = "Terry"
Giving a string an initial value didn't work. Now it does.

Bean

PropBasic Libraries Posted In Parallax OBEX

2010-07-23T06:30:00.000-07:00

I have posted 4 PropBasic libraries in the Parallax OBEX

http://obex.parallax.com

RFIDRW - Controls Parallax RFID Read/Write module (28440)
TV - Generates 256x192 pixel tv output
VGA - Generates 320x200 4 color VGA output
VGA2 - Generates 320x200 2 color VGA output

I invite you to download them and try them out.

Feedback welcome.

Bean

Big Trak toy

2010-07-20T15:46:00.001-07:00

Last weekend we went to the 100 mile yardsale in PA.

I picked-up a big trak toy for $1.

I assumed it didn't work and I was prepared to take it apart to put a propeller in it.

To my surprise it DOES work.

Now I have to decided if I want to keep it or hack it ??? Decisions decisions...

Bean

Version 00.01.02

2010-07-20T15:38:00.000-07:00

I have finalized version 00.01.02.
Here are the changes:


  Fixed: test $,#1 WC ' Set Carry (doesn't work in LMM) I2CWrite
  Fixed: COGINIT if taskname doesn't exist crashes
  Fixed: Glitch on PinGroup = PinGroup
  Fixed: IF pinName THEN
  Changed: In LMM use "LONG label * 4" instead of "LONG @label - @__Init"
  Changed: Use relative jumps for LMM
    SUB __PC,#(($-label)*4)+4 ' Jump backward
    ADD __PC,#((label-$)*4)-4 ' Jump forward

I will edit this post with a link to the new file when BradC gets it posted.

GET IT HERE

Scroll to bottom of list.

Bean

Thanks to Kuroneko for a solution to the LMM flag problem.

2010-07-19T16:31:00.000-07:00

The Parallax forum user Kuroneko posted a solution to my problem with flag setting intruction when using LMM.

Here is his solution:


set_z_c   cmpsub  0, 0 wz,wc,nr
set_z_nc  neg     0, #0 wz,wc,nr
set_nz_nc neg     0, #1 wz,wc,nr

set_nz_c  cmp     reg, #1 wz,wc  ' reg holding NULL, e.g. par
          cmpsub  reg, #0 wz,wc  ' reg holding non-NULL value

Now I just need to implement these and post a new version of PropBasic.

Bean

Found a bug in I2CWRITE command when using LMM

2010-07-14T17:31:00.000-07:00

I found a bug in the I2CWRITE command when using LMM.
The generated PASM code uses:

ror $,#1 ' Set Carry

But "$" is usually greater than $1FF in LMM, so this line throws an error and won't work to set the carry flag.

I'll have to try to figure out some other way to set the carry flag in LMM that only uses one instruction. If you know of a way to do it, please write a comment. If I can't figure something out, I'll ask in the Parallax Forums.

Bean

Just started a blog for PropBasic

2010-07-14T17:17:00.000-07:00

I decided to create this blog to keep users up to date about PropBasic developments and to answer any questions you may have about PropBasic.

I'll blog about updates and new features. I may even ask what you users think about a potential new feature to see if it is needed/wanted.

Thanks for visiting, if you have any questions please leave a comment.

Bean