Re: [avrdude-dev] stk500 and firmware 1.14

[Theodore A. Roth]

On Thu, 20 Feb 2003, Brian Dean wrote:

:) On Thu, Feb 20, 2003 at 08:50:49AM -0800, Theodore A. Roth wrote:
:)
:) > This doesn't make sense. hiv is not an option when parallel
:) > programming since you _must_ take reset to 12V in order for the device
:) > to switch into parallel programming mode.
:)
:) In the "set device" command, what is the distinction between a device
:) that supports full parallel mode vs pseudo parallel mode - the
:) 'parmode' parameter to the "set device" command (buf[4] in avrdude)?
:) Vales of 'yes' and 'no' don't seem to be sufficent to describe the
:) parallel programming capabilities.  What is "psuedo" parallel
:) programming support mean?

My interpretation is that the psuedo mode is for the 8-pin avrs which
don't have enough pins for full parallel programming, thus they use a
hiv serial programming (not to be confused with spi ISP). Section
3.7.2.2 of the stk500 user guide seems to discuss this briefly.

I think that parmode (buf[4]) is only meaningful if progtype (buf[3])
is set to one.

Ted