BLINK.BAS - Trying to program PIC16F84A Please help

[chien_fu]

BLINK.BAS - Trying to program PIC16F84A.. Please help!

I just got all set up with my programmer (it's a couple years old, but still seems to be functioning fine, it's the EPIC pro.) And I just bought the PICBASIC compiler. I loaded the sample program BLINK.BAS:

loop:
High 0 ' Turn on LED connected to PORTB.0
Pause 500 ' Delay for .5 seconds

Low 0 ' Turn off LED connected to PORTB.0
Pause 500 ' Delay for .5 seconds

Goto loop ' Go back to loop and blink LED forever
End


BLINK.HEX: incase this means anything to you...

0000- 1e03 0008 0186 305f 008c 300d 0084 0180
0008- 0a84 0b8c 2807 282c 2021 0084 3907 0684
0010- 1003 0c84 0c84 0c84 1a04 1784 1204 018a
0018- 0782 3401 3402 3404 3408 3410 3420 3440
0020- 3480 3907 018a 0782 3430 3431 3432 3433
0028- 3434 3435 3436 3437 3000 2041 3001 00a3
0030- 30f4 2048 3000 203d 3001 00a3 30f4 2048
0038- 282c 203a 3007 2055 283a 200c 3aff 0580
0040- 2845 200c 0480 2844 3aff 1784 0580 2864
0048- 00a2 205e 0064 0823 0422 1903 0008 30f7
0050- 3eff 1d03 2850 2060 284a 1683 38f8 0581
0058- 390f 0481 0063 300f 0481 2864 09a3 09a2
0060- 0aa2 1903 0aa3 0008 1283 0064 0008


Using a 16F84A
I have MicroCode Studio set to 16F84A as well as meLabs Programmer v4.23
I am attempting to use the internal oscillator so have set meLabs to RC.
Watchdog timer: enabled
Power up timer: disabled
Code Protect: off

I am getting a "Code Programming Error at 0000" when I try to program.

I first erase the chip, and then read it and it reads:
0000- 3fff 3fff 3fff 3fff 3fff 3fff 3fff 3fff
0008- 3fff 3fff 3fff 3fff 3fff 3fff 3fff 3fff
0010- 3fff 3fff 3fff 3fff 3fff 3fff 3fff 3fff
0018- 3fff 3fff 3fff 3fff 3fff 3fff 3fff 3fff
etc...

I program the chip, it gives me the error, and it then I read it and it reads:
0000- 1e03 3fff 3fff 3fff 3fff 3fff 3fff 3fff
0008- 3fff 3fff 3fff 3fff 3fff 3fff 3fff 3fff
0010- 3fff 3fff 3fff 3fff 3fff 3fff 3fff 3fff
0018- 3fff 3fff 3fff 3fff 3fff 3fff 3fff 3fff
etc...

I've tried this with a half a dozen chips with the same result each time. Note that the chips have been on my shelf for a couple years too. In their anti-static packaging in a fairly dry, temperate atmosphere.

I notice that when I load the HEX file into meLabs, it automatically calls up a XT oscillator, and I have been changing it from XT to RC. Do I need to specify RC in MicroCode IDE or in the program somewhere?

Is there anything else I'm missing? Any help would be greatly appreciated, as I'm pretty new to this.

 

[NoTime]

Welcome to PF.

I'm not familiar with your particular setup.
However, I have to wonder at the 3FFF.
I would think that it should be FFFF which is the erase state for the things I have worked with.

 

[zeitghost]

The PIC uses 14 bit words, so 3fff is correct.

You might try turning the watchdog off.

Was this a self build Epic or one you bought ready made?

 

[chien_fu]

Let's bring this back to the top of the list.. I know it's been a couple years, but I got that same programmer back out and it's doing the same thing. Now it seems to get through 4 bytes instead of just the first one though...

This is a purchased programmer from meLabs.
Any new thoughts or revelations on this?