I can't remember having any such issues, but then again I also can't
remember if I ever tried it with VAX. With PDP-11 it works without any
issues.
This is, though, another slight silliness in simh. The limit to 4 disks
per controller is very artificial. The UDA50, KDA50, and maybe some
other controllers only have four actual, physical ports, which limited
them to only have four disks per controller. However, MSCP itself do not
have such a limitation, and common SCSI controllers for these machines
which use MSCP allows more than four disks on a controller, and most
software (at least RSX and VMS) also do not limit themselves to only
configure max four disks on a controller. I wish simh didn't put such
arbitrary limitations in. simh also decides on unit numbers by itself,
which could also have been nice to be able to choose.
Johnny
On 2019-06-23 15:37, Jonathan Welch wrote:
A vax emulator I was configuring for a friend (MicroVAX 3900 simulator
V4.0-0 Current git commit id: ab3e07a4) needs to mount more than four
disks.
The .INI file has
set rqb enabled
and an associated attach command.
In my VMS startup disks are mounted very close to the beginning of the
boot sequence.
I discovered that when the emulator starts it is necessary to put a
$ WAIT 00:00:06
before mounting DUB0; the wait is necessary for the disk to appear.
Is this something that is expected behavior and should be documented
or a bug that can be fixed?
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|| on a psychedelic trip
email: [email protected] || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
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