🚀 go-pugleaf

Gil Nardo (mcs@wet.UUCP) wrote:
: U40348@uicvm.uic.edu (Jay Lorenzana) writes:
: > Our school is ill-equipped.  We have an old eprom burners
: > that will only program Motorola S1 and S2 record files.  How
: > can I convert my S19 record file to S1 and S2?
: > Are there any complications in modifying hex files?
: > And what is a hex to obj file converter?
: > Thanks for any help you can give,
: >                                   Jay
: > A piece of my s19 rec:
: > S123C00000000000000000BDC048BDC09ABDC063BDC0A5BDC0BA7FC0037DC0002605BDC0E0
: > S123C020CE20F30F7DC002261A1A8300FF2B02200DCE10001F2E40FC962ED72F20D5BDC2F2
: > S123C0408120D0BDC28B20CBCE10008EDFFF862F97EECCD000DDEFC60CE73F86100686016F
: > ......
: > lines deleted
: > ......
: > S123C3E02A2A204552524F52202A2A202020202020202020202020202020202055702020A2
: > S121C40020202020202020202020446F776E204A4F59535449434B204D4F444520202D
: > S123D0008600BDC285FEC001140301BDC156432607BDC110BDC0BA3B432607BDC237BDC0C4
: > S123D020BA3B432607BDC1CFBDC0BA3B4326158C000026013BBDC1D01400017DC00427038E
: > S121D040BDC0BA3B8C00002603BDC110BDC0FDBDC14F8C00112706BDC0BABDC3313BE5
: > S9030000FC
: 
: The sample you have shown appear to be the usual S-records,
: where S1 lines refer to 2 byte address references, and the
: S9 line terminates the S1 block.
: I'm not sure what exactly it is you are trying to do. The
: two possibilities are that you are trying to decipher what
: each line means, and/or you are trying to convert S1 records
: to S2 records, i.e., your eprom burner only accepts 3 byte
: address references.

Another possibility is that the EPROM burner was designed with the
assumption that all S1S9 records are `short' - that is, containing
only 16 encoded bytes.  It is unusual (in my experience, anyway) to
see S1S9 records which are this long.

Perhaps something to try is converting these `long' records to short
ones.  E.g. this record:
  S123D0008600BDC285FEC001140301BDC156432607BDC110BDC0BA3B432607BDC237BDC0C4

would become these two:
  S113D0008600BDC285FEC001140301BDC1564326??
  S113D01007BDC110BDC0BA3B432607BDC237BDC0??

(I was too lazy to calculate the proper checksums, so I just put in
`??' instead.)  Notice that `S123' (16-bit address, 35 bytes to follow)
changes to `S113' (16-bit address, 19 bytes to follow).

-- 
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