Re: PS/2 mouse -> Apple mouse adaptor. Want one?

["Bill Garber" <willy46pa@comcast.net>]

> At the moment it's using a PIC16F84. I like to use these because they
> use flash ROM. They can be erased and reprogrammed in about 30 seconds.
> The final version would probably use a PIC16C620 which are one-time-
> programmable chips pin-compatible with the PIC16F84. There are several
> simple PIC programmer designs on the internet which work from a PC
> serial port if you want to build your own. I'll put the adaptor program
> on my web site when it's finished.
>
> I really wanted to use one of the 8-pin PICs since they're so small and
> cheap. An 8-pin microcontroller with 6 I/O pins! But unfortunately the
> adaptor needs 7 I/O pins; 2 for the PS/2 data and clock, 4 for the mouse
> movement and 1 for the button.

I assume the PIC16C620 is one of the 18 pin ICs. I agree the 8 pin would
have been nice, but you gotta do what you gotta do. I can get that
programmer
from several places for $17.95, but the shareware registration fee for the
software is $20. That's about $40 all told. I might be able to get a
programmer
that does 24 and 27 series for about double that. Still looking. I was
planning
on buying one anyway, so don't think I'm getting this just for the mouse
adapter.
Thanks. Good job.

Bill @ GarberStreet Enterprises
http://garberstreet.netfirms.com



---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.449 / Virus Database: 251 - Release Date: 1/27/03