[Info-vax] VMS device drivers

[Bob Eager]

On Tue, 19 Sep 2023 13:37:48 -0700, David Jones wrote:

> On Tuesday, September 19, 2023 at 1:40:17 PM UTC-4, Simon Clubley wrote:
>> For one thing, unlike Linux, there is absolutely _no_ kernel module
>> support in VMS. On VMS, when you need to reload your device driver
>> while trying to get things to work, you need to reboot your system
>> _every_ _single_ _time_ you want to load an updated device driver. :-(
>> :-(
> 
> The early versions of VAX/VMS let you reload drivers, it was quite
> convenient.

It very much depended on the driver, as I recall.

> I never tried to write a device driver from scratch, but I have tweaked
> a couple.

I wrote two or three, one being a terminal driver that used a cloned 
interface and used our weird network. Another did file transfer and stuff.

What helped me a lot was going on the device driver course!