[Simh] RQ disk formats broken in the latest build?

Johnny Billquist bqt at softjar.se
Tue Apr 10 13:26:33 EDT 2018


On 2018-04-10 18:46, Robert Armstrong wrote:
>    In the PDP11 simh from a couple of weeks ago, the disk image files 
> seem to default to simh format ….  That’s what I’d expect –
> 
> PDP-11 simulator V4.0-0 Current */git commit id: 054e8e56/*
> 
> sim> set rq0 rd54
> 
> sim> set rq0 enable
> 
> sim> attach rq0 foo.rd54
> 
> RQ0: creating new file
> 
> sim> show rq0
> 
> RQ0     159MB, attached to foo.rd54, write enabled
> 
>          RD54, autosize, SIMH format
> 
> sim>
> 
>    Looks good…  But in the latest version, it appears to be stuck in RAW 
> format!
> 
> PDP-11 simulator V4.0-0 Current */git commit id: cc7721b9/*
> 
> sim> set rq0 rd54
> 
> sim> set rq0 enabled
> 
> sim> attach rq0 foo.rd54
> 
> sim> show rq0
> 
> RQ0     159MB, attached to foo.rd54, write enabled
> 
>          RD54, autosize, RAW format
> 
> sim>
> 
>    It didn’t create an image file, and it’s in RAW format now.  BTW, I 
> thought RAW format accessed a physical device.  There’s no device named 
> “foo.rd54” – why don’t I get an error for that?
> 
>    Worse, I can’t even make it use simh format anymore –
> 
> PDP-11 simulator V4.0-0 Current */git commit id: cc7721b9/*
> 
> sim> set rq0 rd54
> 
> sim> */set rq0 format=simh/*
> 
> sim> set rq0 enabled
> 
> sim> attach rq0 foo.rd54
> 
> sim> show rq0
> 
> RQ0     159MB, attached to foo.rd54, write enabled
> 
>          RD54, autosize, RAW format
> 
> sim>
> 
> It’s still in RAW format??!?  Is it supposed to be like this?

I suspect that might be ok. What is simh format, really? I mean, it's 
just a bunch of blocks, and no extra information in there, unless 
something changed since I last looked.

But it looks like simh might have changed how it presents things?

   Johnny

-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol


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