Roman:

I don't want to disapoint you but first of all, the 8 pin 18F devices are
out of schedule since a couple of months now. I was looking for the 18 pin
devices too (18F1230 and 1330 if I'm not wrong), but these devices
disapeared from the site too, what makes me think they aren't going to be
produced anymore ... :-(

1- If your hardware didn't work with 18F, know that any freeware programmer
supported by IC-PROG will. Bonny Gjizen done a good work to support these
chips. I use it with a JDM programmer and programmed many 18F devices
(mainly 452 and 252 devices). We are also finishing support to the "new"
12F675 too.

2- Learning the instruction set is always worth (hehe). Even if you use a
high level language ( I use PCWH from CCS) you will always have to take a
look at the code and maybe do some fine tunning by yourself. I also needed
to include some ASM in the source code so, knowing the instruction set is a
MUST.

3- I disagree with you about the use in more complex projects ... With that
price strategy, it looks like Mchip is trying to take the 16F876 and 877
place's with the 18F252 and 452, as they cost almost the same and the 18F
have MANY more functions (5 times more RAM, 2 times more ROM, 4 timers,
etc).

Best regards,

Fabio Pereira
JOINVILLE - SC - BRASIL


----- Original Message -----
From: "Roman Black" <fastvid@EZY.NET.AU>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Thursday, August 29, 2002 6:42 AM
Subject: [PIC]: question about 18F452


> Hi, I got some PIC 18F452's today, and having never
> used the 18 series parts I have a couple of questions;
>
> 1. Does anyone know if PicStart Plus with 2.3 firmware
> and MPLAB 5.3 will program the 18F452?
> I'm just about to install the PicStart 2.3 firmware,
> but the help file that comes with it is sketchy on the
> 18F parts.
>
> 2. Is it worth learning the 18F instruction set? I know
> the main use of these chips is for larger projects which
> suit a higher level language, but i'm more interested
> in having the extra processing power especially once the
> 18 and 8 pin 18F chips are obtainable.
>
> Any other tips etc are appreciated. :o)
> -Roman
>
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>

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