ECU Bin Bytes 0x8000-0x8008

[Ludis Langens]

Scot Sealander wrote:
> 
> > Does anybody know how to decode the DATECODE and SEQNUM words?
> 
> SEQNUM, I have no idea....
> 
> DateCode,  I suspect is this:
> 
> 006F hex =  0111 decimal.
> 
> Probably 0 is the LSD of year, and 111 is the Julian date.
> 
> So 1990, and about some day in April.

Here are a sorted bunch of actual DATECODE & SEQNUM pairs (in decimal):

  48:04268    57:03052   111:01615   137:00207   147:01463   148:05786
 161:02836   161:03202   166:00559   182:00539   190:21795   220:01006
 237:01079   237:01669   240:02127   249:01249   278:05902   349:02083
 353:21480   368:05165   377:05876   389:20569   417:07343   427:00269
 427:03247   440:00033   447:07718   476:00039   477:04651   489:23107
 508:13873   510:20744   527:01465   557:06638   558:03027   578:32936
 581:00101   589:11360   617:04603   737:12003   750:01750   767:10466
 768:07474   792:01027   847:10480   942:00013   951:00305   997:03586
1020:21485  1033:00115  1068:07511  1169:33108  1169:34653  1239:05255
1247:00773  1268:30472  1286:00008  1291:00165  1478:20876  1528:07877
1568:05605  1572:20491  1579:00262  1618:07319  1689:05326  1690:12161
1747:10000  1792:11530  1919:02084  1919:03070  1976:10100  2008:00396
2009:01174  2009:01343  2158:05892  2159:07533  2188:06608  2206:32524
2266:00011  2377:04199  2387:02405  2407:00139  2419:01277  2486:06155
2500:00640  2508:00372  2519:07949  2529:01042  2570:02888  2601:00179
2639:00085  2690:01860  2760:00064  2777:01143  2829:00240  2869:00605
2937:01275  2938:20118  2981:00388  3038:22076  3039:00508  3059:07377
3077:00421  3171:00088  3197:02138  3249:00059  3256:02372  3288:13425
3340:02259  3367:00295  3376:02294  3427:02304  3436:11333  3439:00187
3459:01805  3461:11106  3467:00188  3487:32846  3510:02677  3516:10172
3521:00636  3576:05137  3578:07067  3668:22315

>From this, it looks like the DATECODE is the Julian date followed by a
digit for the year.  Thus, Malcolm's example is from January 11, 1991.

-- 
Ludis Langens                               ludis (at) cruzers (dot) com
Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/

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