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'Q: Develop 16F877 code with a 16C6x, 16C7x ICEPIC?'
2000\03\13@171623 by Quitt, Walter

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Can I develop code for a 16F877 based target using an ICEPIC usually used
for 16C6x / 16C7x development?  I pretty sure the pinout should be no real
problem as I could emulate a 16C74. The 74 has the same pinout, I believe.

I guess I'll miss out on the internal flash programming.  I won't get the
whole code space (unless I somehow kludege the 16c74.inc file.)  But, the
pins all will do the same stuff except for the 17F877 specific programming
functions.

What else am I missing????????

I have a target that uses a 16C65A and I want to replace it with the pin
compatible 16F877.

TIA,
Walt...

2000\03\13@172448 by Tony Nixon

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"Quitt, Walter" wrote:
>
> Can I develop code for a 16F877 based target using an ICEPIC usually used
> for 16C6x / 16C7x development?  I pretty sure the pinout should be no real
> problem as I could emulate a 16C74. The 74 has the same pinout, I believe.
>
> I guess I'll miss out on the internal flash programming.  I won't get the
> whole code space (unless I somehow kludege the 16c74.inc file.)  But, the
> pins all will do the same stuff except for the 17F877 specific programming
> functions.
>
> What else am I missing????????
>
> I have a target that uses a 16C65A and I want to replace it with the pin
> compatible 16F877.
>
> TIA,
> Walt...

10 bit A2D and EEPROM


--
Best regards

Tony

http://www.picnpoke.com
spam_OUTsalesTakeThisOuTspampicnpoke.com

2000\03\14@083919 by mike

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On Mon, 13 Mar 2000 14:14:47 -0800, you wrote:

>Can I develop code for a 16F877 based target using an ICEPIC usually used
>for 16C6x / 16C7x development?  I pretty sure the pinout should be no real
>problem as I could emulate a 16C74. The 74 has the same pinout, I believe.
>
>I guess I'll miss out on the internal flash programming.  I won't get the
>whole code space (unless I somehow kludege the 16c74.inc file.)  But, the
>pins all will do the same stuff except for the 17F877 specific programming
>functions.
>
>What else am I missing????????
>
>I have a target that uses a 16C65A and I want to replace it with the pin
>compatible 16F877.
>
>TIA,
>Walt...
As long as you understand the difference between the parts it' no
problem. The RAM paging on the 877 is significantly different to the
16c6x/7x parts - if you want a drop-in replacement use a f874 instead,
which is specifically designed to be backwards-compatible.
If you need to use any f87x specific features, you may be able to do
most of the development on a c7x emulator, and leave the f87x bits
till last, and use MPLAB-ICD to debug these.


2000\03\14@120030 by Quitt, Walter

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Thank you.
I reviewed the data sheets and, I too, noticed the paging differences.
Since I do alot of 17C756 stuff that style of paging is very familiar.
I converted 16C code to the 17C and it was very tedious.  So I am sure
I'd have to jump through similiar hoops for 16C65 to 16F877.  I guess
I'll investigate the 874.  The code space in the 877 was my initial
impetus for investigating it.  Of course the use of the ICD and
serial in-circuit reprogramming were others.  It seems that we can
not get pods for my ICE 2000 and ICEPIC so I thought I might try
reusing a slightly different pod.

"Are we having fun?"

-walt...

{Original Message removed}

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