Andrew????

-------- Original Message --------
Subject: Re: [BLI-PCM] Re: DC Master on sale at ModelTrainStuff for
$24.99 to program Blue Line CVs
Date: Fri, 16 Nov 2007 09:06:26 -0800
From: Jon Miller <atsf@...>
Reply-To: BroadwayLimited-PrecisionCraft@yahoogroups.com
To: <BroadwayLimited-PrecisionCraft@yahoogroups.com>
References: <fhiraf+1qep@eGroups.com> <473CF6C7.70504@...>



Michael and all;
Trying to understand this all I forgot where the answer from the SPROG
owner was. According to the NMRA site this is RP 9.2.3. I have shortened
it a bit but the last sentence says it all;

"sic----Acknowledgment of either bit verify indicates that the decoder
fully supports all modes of Direct Configuration Variable Addressing
(Verify
Byte, Write Byte, & Bit Manipulation). A Command Station, Programmer, or
Decoder, which supports Direct Mode, must implement all three
instruction-types."

The SPROG said that Blue line does not conform to the NMRA RP and he is
right BUT neither does the SPROG as the last sentence says a command
station
(which the SPROG is) MUST implement all three instruction-types (referring
to Direct Mode). It appears that the SPROG does not implement Verify Byte
and Write Byte instructions or else it would work with the Blue line. There
are some got ya's here. It says to determine if the decoder supports Direct
Mode you write to the decoder using "Direct Bit" which, for example, NCE
does. Then you must manually tell the NCE system to use Direct as it
doesn't get an answer from it's write.
This is also what SPROG does but apparently you can't manually put SPROG
into Direct Mode which then (to conform to NMRA) would have both Direct Bit
and Direct Byte.

Jon Miller
AT&SF
For me time has stopped in 1941
Digitrax, Chief/Zephyr systems, JMRI user
NMRA Life member #2623
Member SFRH&MS