Inchworm ICD2 Bootstrap loader BETA - Electronic Circuits Projects Diagrams Free

William At MyBlueRoom · 29th July 2006, 02:59 PM

I've yet to test it. Today is my Birthday and kinda busy

But I've cobbled together a simple schematic to make the Inchworm temporarily a sort of JDR style programmer. It's in TESTING and may not work but I've posted it for your study / amusement / suggestions...

You will need to hook up your blank 16F877(A) to an external programming socket on the ICD connector (CON1). And currently I'm using a 100K pulldown to GND resistor on CON1 pins 1,2 at the target device (MCLR)

It inverts most of the RS232 signals but fortuneately the Pony Prog software http://www.lancos.com/prog.html allows for inversion of the I/O pins on your COM port. (I'm using the JDR mode).

If I / we can get it working it might be just the thing for those of you whom cannot get their hands on a programmer for the Inchworm (ICD2) Bootstrap BL010101.HEX file.

PS don't forget I've moved my page http://www.blueroomelectronics.com, please reset your bookmarks!!!

BeeBop · 30th July 2006, 01:05 AM

Hi William,
I'm not here to comment on the project, but rather to wish you a Happy Birthday! (At my age, I deny all birthdays!)
Regards,
Robert

mramos1 · 30th July 2006, 02:55 AM

Happy Birthday Bill..

Still like a blue board..

BeeBop: ditto..

Pommie · 30th July 2006, 02:58 AM

Happy Birthday, may I ask how many years you have graced the planet with your presence?

As to the problem of getting a bootloader into an ICD clone, why not use LVP as outlined on Lothars Page.

Mike.

William At MyBlueRoom · 30th July 2006, 04:15 AM

Been here since 61

Pommie · 30th July 2006, 04:29 AM

Quote:

Originally Posted by William At MyBlueRoom

Been here since 61

I get here before you then by just over 1K days (1037 to be exact).

Mike.

mramos1 · 30th July 2006, 11:36 AM

Late 59 here, so about 400 days before you here..

BeeBop · 30th July 2006, 12:38 PM

Shoot, early '56, but I am only 25 years old!

Mike, K8LH · 30th July 2006, 01:51 PM

Happy Birthday Bill, you old codger (grin).

Mike

William At MyBlueRoom · 30th July 2006, 04:19 PM

Quote:

Originally Posted by Pommie

As to the problem of getting a bootloader into an ICD clone, why not use LVP as outlined on Lothars Page.
Mike.

RB3 is used for the BUSY LED, we'd lose that. It's also a little bit of a fun challenge too.

I do like the JDM software though.

Mike, K8LH · 30th July 2006, 05:22 PM

Yeah, but once you get the BL installed and the ICD2 up-n-runnin' you simply program another '877A with LVP off and replace that first '877A in the ICD2.

Anyone heard if Mramos1 got his ICD2 working yet?

Mike

mramos1 · 30th July 2006, 09:43 PM

Mike K8LH, no running board yet. I have not etched the new board. I can etch the new one, I was tied up on business and other work. I just pop in when I get up and go to bed (and free time with the kids I sneak in). I fixed my drilling issues. I have the old one part stuffed. Do you guys need me to load it up to test something? I have your chip/BL here.. If I can help let me know.

William At MyBlueRoom · 31st July 2006, 01:00 PM

Quote:

Originally Posted by Mike, K8LH

Yeah, but once you get the BL installed and the ICD2 up-n-runnin' you simply program another '877A with LVP off and replace that first '877A in the ICD2.
Mike

For some I'm sure getting the bootloader on a chip is the hardest part.

phalanx · 31st July 2006, 05:43 PM

Quote:

Originally Posted by William At MyBlueRoom

For some I'm sure getting the bootloader on a chip is the hardest part.

I can see the questions now: "Why do I need a programmer to program my programmer?"

Matt(Pic progger) · 31st July 2006, 05:52 PM

Wow, I thought I was old (1968)!!! You have made my day!

Happy Birthday!!

30th July 2006, 04:15 AM	(permalink)
William At MyBlueRoom Experienced Member	Been here since 61 __________________ Bill Home of the Firefly PIC Tutor Inchworm ICD2 http://www.blueroomelectronics.com

31st July 2006, 05:52 PM	(permalink)
Matt(Pic progger) Experienced Member	Wow, I thought I was old (1968)!!! You have made my day! Happy Birthday!! __________________ Regards MATT!

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30th July 2006, 01:05 AM	(permalink)
BeeBop Experienced Member	Hi William, I'm not here to comment on the project, but rather to wish you a Happy Birthday! (At my age, I deny all birthdays!) Regards, Robert

30th July 2006, 02:55 AM	(permalink)
mramos1 Experienced Member	Happy Birthday Bill.. Still like a blue board.. BeeBop: ditto..

30th July 2006, 02:58 AM	(permalink)
Pommie Experienced Member	Happy Birthday, may I ask how many years you have graced the planet with your presence? As to the problem of getting a bootloader into an ICD clone, why not use LVP as outlined on Lothars Page. Mike.

30th July 2006, 11:36 AM	(permalink)
mramos1 Experienced Member	Late 59 here, so about 400 days before you here..

30th July 2006, 12:38 PM	(permalink)
BeeBop Experienced Member	Shoot, early '56, but I am only 25 years old!

30th July 2006, 01:51 PM	(permalink)
Mike, K8LH Experienced Member	Happy Birthday Bill, you old codger (grin). Mike

30th July 2006, 05:22 PM	(permalink)
Mike, K8LH Experienced Member	Yeah, but once you get the BL installed and the ICD2 up-n-runnin' you simply program another '877A with LVP off and replace that first '877A in the ICD2. Anyone heard if Mramos1 got his ICD2 working yet? Mike

30th July 2006, 09:43 PM	(permalink)
mramos1 Experienced Member	Mike K8LH, no running board yet. I have not etched the new board. I can etch the new one, I was tied up on business and other work. I just pop in when I get up and go to bed (and free time with the kids I sneak in). I fixed my drilling issues. I have the old one part stuffed. Do you guys need me to load it up to test something? I have your chip/BL here.. If I can help let me know.