DG Nova 4/x software hacking

From: George & Oksana Wiegand <ICS_at_Core.com>
Date: Sun Feb 27 08:18:47 2005

You have to be careful if you want to delete a LINK, you must use the UNLINK
command otherwise the syetem will delete the target rather than the link
itself.

----- Original Message -----
From: "Tom Jennings" <tomj_at_wps.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk_at_classiccmp.org>
Sent: Saturday, February 26, 2005 7:33 PM
Subject: Re: DG Nova 4/x software hacking


> Well I seem to be heading towards a usable computer. Sat down with
> the manual and re-learned nspeed. First task was to write a script
> to create links in the working directory to all the utilities on
> DP0. Used the BUILD command (builds 'command tail file lists' in
> unixese), and wrote an iterative macro to hash it up.
>
>
> (There's no "path" to find executables (.SV); it must be in the
> current directory or directory specified. Directories in RDOS
> aren't heirarchical like they are in unix-derived paradigms;
> they're like little partitions, you more or less "mount" them with
> the DIR command (mounts the directory and makes it default
> directory) or INIT them ("mounts" them so you can copy to them,
> for instance.) You specify how many directories you can have
> mounted at the same time at SYSGEN time.)
>
>
> Build makes:
>
> ASM.SV,MAC.SV,FDUMP.SV,FOO.SV,BAR.SV, [and so on]
>
> I needed:
>
> LINK ASM.SV DP0:ASM.SV
> LINK MAC.SV DP0:MAC.SV
> ...
>
> The nspeed command is:
>
> 32<1BTABSAJ#C
> $ $BS0ILINK ^BA DP0:^BA
> $-1LT1L>
>
>
> Here's one of those maddening things that I'll figure out someday,
> and has some dubious reason. The command:
>
> S
> $-1D
>
> (Search for a CR)
> S
> $
> (Delete 1 char before pointer)
> -1D
>
> Works fine maually. It doesn't work when iteration < and > is used!
> That's why I change all occurrences of CR to space in buffer A:
> #C
> $ $
> That works.
>
> ^BA
>
> means 'insert the contents of buffer A'
>
> -1LT1L
>
> minus one line; type out line; plus one line, so it
> prints the results of edits as it goes.
>
> The leading 32< ... >
>
> Means 'iterate 32 times' because I didn't feel like coming
> up with a test for 'end of buffer'. Eh.
>
>
>
> Now to write a HELLO WORLD program!
>
>
Received on Sun Feb 27 2005 - 08:18:47 GMT