RT11 sysgen and disk partitions

Jerome Fine replies: Since Megan mentioned the monitors for V05.06, these ddX.SYS device drivers are also used with the RT11ZM. Note that both RT11XM and RT11ZM are known as mapped monitors. In addition, also starting with V05.06 (although I have never used them myself), RT11XB and RT11ZB are also mapped, if I understand the documentation correctly. I presume that these last two monitors also use the ddX.SYS device drivers. All the other monitors are unmapped and use the dd.SYS device drivers. I would modify that to be almost all DEC utilities (probably ALL) include .Fetch and .Release calls. As for user applications, certainly the ones which are widely used will likely include the calls, but if you get an "Invalid device error" and the LOAD command fixes the problem, you can figure out the situation for yourself. One other minor point is that I seem to remember that system jobs are not allowed to perform .Fetch calls to the monitor. If a user uses VBGEXE to run a normal program as a system job, then all device handlers that are used must first be LOADed. Which does not mean the device drivers are unavailable, simply not immediately ready. This means that with device drivers such as DU(X).SYS using the RQDX1 or RQDX2, it is best to use the LOAD command if repeated use is expected since there are many seconds of delay to initialize the controller. The RQDX3 is a bit faster. NOTE that I agree with everything the Megan stated, I was just adding a bit more detail. Sincerely yours, Jerome Fine -- If you attempted to send a reply and the original e-mail address has been discontinued due a high volume of junk e-mail, then the semi-permanent e-mail address can be obtained by replacing the four characters preceding the 'at' with the four digits of the current year.