[Abios-rtool-hdl-dev] Ideas on how to implement a raw mode in the VHDL?

[Jack G. <jac...@ya...>]

Hello, I am sending this message to everyone that has expressed an =
interest
in the Affordable BIOS Restoration Tool project on SourceForge. I=92m =
also
sending this to the mailing list to archive the thread.=20

=20

After talking with Mike Karr he pointed out that, it would be beneficial =
to
have a raw programming mode in the VHDL so that all pins could be =
controlled
from software. That way devices with different pinouts can be handled. I =
was
originally thinking that a new ucf file would be created for different
device types but I think I like Mike=92s idea better. So I just wanted =
to get
everyone=92s input on the best way to implement a raw mode.

=20

I am thinking one way is to detect when a 10101010 is written to the =
address
and then a reset is triggered, a 010101010 is then written to the same =
data
port to verify raw mode. This sequence will trigger raw mode and since =
there
are 40 pins on the header 5 subsequent data writes will set those 40 =
pins.
Any thoughts?

=20

Thanks,

            Jack.


--=20
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.6.13 - Release Date: 1/16/2005
=20