Ralph,

As far as I can see in the diagram , the programmer is a jdm style 
programmer and this does have known problems if the voltage swing on the 
serial port does not reach about + and -7volt ( has to create 13volt vpp 
from this voltage)
ports that usually dont work are laptop , port replicator and usb to serial 
converters.

Peter

----- Original Message ----- 
From: "Ralph Seguin" <rpseguin@gmail.com>
To: <Piclist@mit.edu>
Sent: Wednesday, December 08, 2004 6:49 PM
Subject: [PIC] HELP!! PIC 16F88, Olimex PG4-D, Newbie problems...


>I can't get this simple program to program or work.
>
> Configuration:
> PIC16F88-I/P on an Olimex PG4-D board, 20 MHz crystal 
> (http://olimex.com/dev)
> Serial port cable from IBM Thinkpad T30 (on a dock/port replicator)
> running Windows 2000.
> ICPROG 1.05C,  configured for Windows API (as per directions for
> Windows NT --> 2000) and for 16F84A (there was no 16F88 line).
> MPLAB 6.60
>
> Config lines in the .asm file:
>               __CONFIG _CONFIG1, _CP_OFF & _CCP1_RB3 & _DEBUG_OFF &
> _CPD_OFF & _LVP_OFF & _BODEN_ON & _MCLR_OFF & _PWRTE_ON & _WDT_OFF &
> _HS_OSC
>               __CONFIG _CONFIG2, _IESO_OFF & _FCMEN_OFF
>
> Firstly, a number of constants don't seem to be defined
> (_WRT_ENABLE_OFF is not defined, so I removed it from the _config
> line) in the include file.
> When I used ICPROG to write it, it failed on the readback/compare.
>
> Anybody have a reasonable config value or list for this MCU?
> Anybody have a working program and/or MPLAB project to blink the LED
> (connected to RA2 on the Olimex PG4-D board) for the 16F88-I/P?
> Set of sample programs for the 16F88?   16F877A (which I'm going to
> stick on an Olimex P40-B)?
>
> Thanks.
> -Ralph
>


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