[Simh] Help with loading vax82b zip file into simh/vms

[Ron Young]

On April 4, 2019 5:06:41 PM PDT, Paul Koning <paulkoning at comcast.net> wrote:
>
>
>> On Apr 4, 2019, at 6:57 PM, Johnny Billquist <bqt at softjar.se> wrote:
>> 
>> On 2019-04-04 22:21, Paul Koning wrote:
>>> That looks like standard RMS:VAR records, implied carriage control. 
>That means: each line is preceded by a 2 byte little endian length, and
>line ends are not actually in the file but implicit between each line.
>> 
>> No. It looks a little more complicated than that.
>> It's certainly variable length records as you say. However, after the
>size is the record number, and after that comes the data.
>> 
>> Relative file with variable length records maybe?
>> 
>>  Johnny
>
>You're right, I misread words as bytes.  I don't believe relative files
>have record numbers.  VFC file?  I don't have much exposure to those,
>they are a VMS invention not seen on PDP11s that I can recall.  I seem
>to remember a particular VFC type used for listing files, where the
>fixed prefix is a line number.
>
>	paul
>
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For each line there is a 2 byte length, 2 byte line number followed by the data bytes... One more thing is that each line is halfword aligned with padded null bytes.


-ron
-- 
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