[Info-vax] DIBOL-11

[Johnny Billquist]

On 2023-03-13 14:55, Simon Clubley wrote:
> On 2023-03-12, Paul Gavin <paulgavinco at gmail.com> wrote:
>> Many years ago I worked on MCBA accounting apps written in DIBOL that ran on PDP-8 and PDP-11's with RT-11, TSX/DBL and RSTS/E. MBCA had a poor mans ISAM that really wasn't all that bad considering it worked on all those platforms. Cannot say I really liked DIBOL all that much but it was compact and relatively easy to learn. Fast forward to the mid 80's on VMS, I even did QIOs in DIBOL on VMS to interact with 3270 emulators.
>>
> 
> That jogged a long-forgotten memory.
> 
> With RSTS/E DIBOL, you had two ISAM systems, RMS and an earlier DIBOL
> specific ISAM system.
> 
> I only used DIBOL-specific ISAM at the start of my career, so I have
> completely forgotten the details.
> 
> Was DIBOL-specific ISAM written to support ISAM on systems running DIBOL
> that didn't have RMS indexed files ? Were there such operating systems ?
> 
> Like I said, way too long ago and I only used it for a relatively brief
> period of time before switching to RMS ISAM.
> 
> Does anyone remember enough to fill in the details ?

Well, there was DIBOL for RT-11, and RT-11 never had RMS as far as I know.

DIBOL on the PDP-8 existed, but what kind of capabilities existed there 
I have no idea. But obviously RMS never existed for the PDP-8.

   Johnny