31 Jan
2010
31 Jan
'10
11:49 a.m.
On 1/30/10 8:09 PM, "CSquared" <csquared3 at tx.rr.com> wrote:
Ah yes, 6850 and ACIA, thanks for the memory jog. I
had completely
forgotten both of those. I can't remember now precisely why I felt the
need to reset the ACIA with a software controlled line, but ISTR I
*really* needed to occasionally, and a power cycle was the only way. I
do remember the little system had several of the ACIA's attached to one
6809 and I controlled a number of unique hardware devices that way. I
got to do some 68000 stuff a few years later and liked it quite well
too, though that was using C - my very first C as a matter of fact,
along about 1986 or 1987.
Later,
Charlie C.
Hmmm, possibly It is because I am more of a hardware guy anymore than a
software guy, but couldn't you make an adapter pcb for the ACIA chip, that
had a relay and a few other componants on it, like a 555 set as a timer, and
when the 555 is triggered, it would power off your acia for a preset amount
of time by tripping the relay so the VCC pin no longer gets voltage, then at
the end of the timing cycle it returns the relay to normal position and the
acia comes back on and you set baud, etc....