Searching \ for 'PIC16C620 with 16C84 code' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: techref.massmind.org/techref/microchip/devices.htm?key=16C
Search entire site for: 'PIC16C620 with 16C84 code'.

Truncated match.
PICList Thread
'PIC16C620 with 16C84 code'
1999\03\08@103636 by Stan Ockers

flavicon
face
                           Subject:                        Time:    9:24
AM
                           PIC16C620 with 16C84 code
3/8/99
                                                            Date:
I notice that B.G. Micro is selling PIC16C620's for $1.49 in single
quanities.  I also notice that the 16C20 has the same instructions and register
locations as the 16C84, (except for no EEprom Data).  Is it possible to
use a Tait style 16C84  programmer and software to program a 16C620 and use
it as a 16C84 without EEprom?

Stan

1999\03\08@122653 by Byron A Jeff

face picon face
>
>                             Subject:                        Time:    9:24
> AM
>                             PIC16C620 with 16C84 code
> 3/8/99
>                                                              Date:
> I notice that B.G. Micro is selling PIC16C620's for $1.49 in single
> quanities.  I also notice that the 16C20 has the same instructions and registe
r
> locations as the 16C84, (except for no EEprom Data).  Is it possible to
> use a Tait style 16C84  programmer and software to program a 16C620 and use
> it as a 16C84 without EEprom?

Probably not. The reason that Tait-style programmers work is because the
programming cycle for the 16C84 is self timed. You start the programming
cycle and the 16C84 stops it automagically.

For the EPROM based PICs the correct programming algorithm is to give a
100 uS programming cycle, check to see if the location is programmed, and
once it is programmed to give either a number of overprogram pulses or
a single long overprogram pulse (I can't remember which).

My plan is to use the Tait-style programmer I put together to program a
16C84 to program the other parts. The 16C84 can easily handle the algorithm
and the programming constraints.

It's the 9 billionth and first thing on my list of things to do.

Does anyone have any software to blow into a 16C84 that'll program other PICS
via either a serial or parallel interface? That would simplify the task
enough that I'd tackle it sooner...

BAJ

1999\03\08@172644 by Tony Nixon

flavicon
picon face
> Does anyone have any software to blow into a 16C84 that'll program other PICS
> via either a serial or parallel interface?

Buy a copy of PicNPoke :-)

The PicNPro programmer comes with the PIC source code supplied. Create
your own interface if you want.

--
Best regards

Tony

PicNPoke - Multimedia 16F84 Beginners PIC Tools.

http://www.picnpoke.com
Email spam_OUTpicnpokeTakeThisOuTspamcdi.com.au

1999\03\09@154652 by Byron A Jeff

face picon face
>
> > Does anyone have any software to blow into a 16C84 that'll program other PIC
S
> > via either a serial or parallel interface?
>
> Buy a copy of PicNPoke :-)
>
> The PicNPro programmer comes with the PIC source code supplied. Create
> your own interface if you want.

I took a look at the PicNPro document. It's the right idea but seems extremely
complicated. What I'm interested is the boot programmer. That seems to be the
appropriate level to do the job....

Will examine more closely.

BAJ

1999\03\14@075137 by efan sayer

flavicon
face
Byron A Jeff wrote:

> [...]

>
> My plan is to use the Tait-style programmer I put together to program a
> 16C84 to program the other parts. The 16C84 can easily handle the algorithm
> and the programming constraints.
>
> It's the 9 billionth and first thing on my list of things to do.
>
> Does anyone have any software to blow into a 16C84 that'll program other PICS
> via either a serial or parallel interface? That would simplify the task
> enough that I'd tackle it sooner...
>
> BAJ

As I recall Myke Predko (also a member of this list) describes a 'YAP' (Yet Anot
her
Programmer) in his book Programming and Customizing... Maybe the source is avail
abe
at http://www.myke.com ???

Somewhere at http://www.picpoint.com they wanted to do a free uC programmer (PIC
,
AVR, SX, ...) in 'Internet-Cooperation' but the site hasn't changed for a long t
ime.

Cheers
Stefan Sayer

1999\03\14@105255 by Byron A Jeff

face picon face
{Quote hidden}

It is. It has the same chicken and egg problem that all the others I've seen
(except the PicPro in Easy Pic'N) which it uses a 16C61 which can't be easily
be programmed without another programmer.

The PicPro is a bit better. While it uses a 16C74, it does have a bootstrap
method where a 16F84 is used to program it. It unfortunately tries to do
too much.

It isn't rocket science. The serial/parallel interface, the timing, the power
interface and the programming commands are in fact not difficult. It's just
that it takes time to generate and debug it, just like every other system we'll
ever write. But it would be useful to have such a system in a 16F84 as an
extension of the Tait programmer so that the bootstrap would be quicker i.e.
build a tait programmer, blow at 16F84 with the programmer software with it,
plug in the 16F84, program everything else with your new programmer.

Just not wanting to reinvent the wheel.

BAJ

1999\03\15@053721 by Jim Robertson

flavicon
face
At 10:50 14/03/99 -0500, you wrote:
>>

>
>It is. It has the same chicken and egg problem that all the others I've seen
>(except the PicPro in Easy Pic'N) which it uses a 16C61 which can't be easily
>be programmed without another programmer.
>
>The PicPro is a bit better. While it uses a 16C74, it does have a bootstrap
>method where a 16F84 is used to program it. It unfortunately tries to do
>too much.
>
>It isn't rocket science. The serial/parallel interface, the timing, the power
>interface and the programming commands are in fact not difficult. It's just
>that it takes time to generate and debug it, just like every other system
we'll
>ever write. But it would be useful to have such a system in a 16F84 as an
>extension of the Tait programmer so that the bootstrap would be quicker i.e.
>build a tait programmer, blow at 16F84 with the programmer software with it,
>plug in the 16F84, program everything else with your new programmer.
>
>Just not wanting to reinvent the wheel.
>
>BAJ

I would suggest my code for the picstart 16C will do the trick. You can burn
your own '84 and then use it to drive the TAIT programmer.

I have thought a lot about releasing the code as shareware but for $13USD for
the TM4 HEX file I don't think I'm ripping people off yet there seems to be
zero
interest. Sigh...


Have a look at www.pipeline.com.au/users/newfound/gif/TAITCIRCUIT.gif
This is the TAIT add-on circuit I could release a suitable file for. The
driver
would be either my winTM4 or Dos Tm4 software. Unfortunately the MPLAB
firmware
will not fit in a '84 but a '558 could be a drop in replacement.

Law and order is starting so _must_ go. Will have more later...


Jim










________________________________________
Email: .....newfoundKILLspamspam@spam@pipeline.com.au
http://www.pipeline.com.au/users/newfound
WARP-3 SALE now on. $48USD with world delivery.
MPLAB compatible PIC programmers and firmware
upgrades for many programmers.
________________________________________

1999\03\15@070509 by paulb

flavicon
face
Jim Robertson wrote:

> Have a look at > http://www.pipeline.com.au/users/newfound/gif/TAITCIRCUIT.gif

Cute diagram.  It's very - err, - black!  Obvious HHGTTG influence?

> I have thought a lot about releasing the code as shareware but for
> $13USD for the TM4 HEX file I don't think I'm ripping people off yet
> there seems to be zero interest.  Sigh...

 Time will tell.  There are many things I want to do but...
--
 Cheers,
       Paul B.

1999\03\15@192341 by Antonio L Benci

flavicon
picon face
Just a personal observation...

I have upgraded 2 PicStart 16B1 programmers with the TM4 upgarde made
available by Jim and have been very satisfied with their improved
functionality.

I would have no hesitation in recommending the small outlay of $13.00
USD as being excellent value for money for those wishing to upgrade the
older 16B and 16C PicStart programers.

There must be thousands of these out there. If you have one available
and not using it then I would be more than happy to take it off your
hands, see below for contact details.

PS: Just a happy customer, I get no kick backs from Jim...

Jim Robertson wrote:
>
> At 10:50 14/03/99 -0500, you wrote:

[previous message deleted]

{Quote hidden}

Nino.
--
******************************************************
* Antonio (Nino) Benci                               *
* Electronic Services Manager                        *
* Monash University - Dept of Physics                *
* Wellington Rd, Clayton. 3168                       *
* Victoria, Australia.                               *
* TEL    - 61 3 9905 3649, FAX - 61 3 9905 3637      *
* Mobile - 0414 764 763 (private and ah only)        *
* EMAIL  - .....nino.benciKILLspamspam.....sci.monash.edu.au (work)       *
*        - EraseMEfleatechspam_OUTspamTakeThisOuTexcite.com (private)             *
* WWW    - http://www.physics.monash.edu.au/                *
******************************************************

More... (looser matching)
- Last day of these posts
- In 1999 , 2000 only
- Today
- New search...