Announce: Firmware Revision 1.0.1

[Julian Skidmore]

Hi folks,

I found a bug in d@ in the firmware 1.0.0 revision, so I've had to issue an upgrade.

AtMega328 (32Kb Firmware) FIGnitions should use avrdude to upgrade as normal.

AtMega168 (16Kb Firmware) FIGnitions should use the audio upgrader process described in section 4.5 of the release notes).

The bug affected floating-point scientific calculations since I use d@ a lot.

The distribution includes the new Scientific functions as described in:

https://sites.google.com/site/libby8dev/fignition/examples/examples-2#scientific

FYI the accuracy result for the sin cos tan test is 1.000236e+00, which isn't bad!

For this Benchtest:

: BM8

  ." S"

  clock i@

  1000 0 do

    [ 1. >rad ]

    dliteral

    sin cos tan

    atn acs asn

    exp ln 2drop

  loop

  clock i@ swap -

  ." E"

  20 u* d. ." ms"

;

It takes 36.04s on FIGnition. On a ZX Spectrum it would take 720s ( I did a 100 loop test taking 72s); making FIGnition's Scientific calculations almost 20x faster :-)

-cheers from Julz

--
                             
                  The DIY 8-bit computer from nichemachines™

[Julian Skidmore]

It would help if I included the new distribution!

-cheers from Julz

[Si Brindley]

Julz,

I just got around to upgrading today (directly to 1.0.1).

It went without a hitch.  As an aside, the latest avrdude works fine on OS X Yosemite DP 4.

My first attempt to load via audio was your FPDemo and it worked!  I used a single audio channel on my Mac mini.

For me the correct volume level was between 40 and 45, so of course I have set it to 42 ;)

- Si

[Julian Skidmore]

Hi Si,

Hey, that's excellent! Just a little question, are you using PAL firmware or NTSC firmware?

It's worth comparing it with the same program running on different platforms, e.g. I converted it to Think Pascal for vMac and this is how it runs (attached).

-cheers from Julz

--
You received this message because you are subscribed to the Google Groups "FIGnition" group.
To unsubscribe from this group and stop receiving emails from it, send an email to fignition+...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[Si Brindley]

It's NTSC because the cheap USB video-capture device I got for a few pounds on eBay has a chipset (fushicai) that has no native Mac driver.  I use an "experimental" build of http://www.bentrask.com/easycap/ which only supports NTSC.  I think I have also had it working with the FIGnition flashed to PAL… the lack of colour in the image certainly wasn't a problem

 

 

 

 

Julian Skidmore wrote:

To: FIGnition <fign...@googlegroups.com>

Subject: Announce: Firmware Revision 1.0.1

From: Julian Skidmore <theorigi...@gmail.com>

Reply-To: fign...@googlegroups.com <fign...@googlegroups.com>

Date: Wed, 23 Jul 2014 12:37:41 +0100

 

 

Julz,

--
                             

                  The DIY 8-bit computer from nichemachines™

 

 

--
                             

                  The DIY 8-bit computer from nichemachines™
 

 

--
You received this message because you are subscribed to the Google Groups "FIGnition" group.
To unsubscribe from this group and stop receiving emails from it, send an email to fignition+...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

 

--
                             
                  The DIY 8-bit computer from nichemachines™