How to install 4.3BSD Quasijarus on VAXStation 4000 VLC? - TUHS

27 Apr 2021

Thanks to Emanuel Steibler, I am now in possession of a VAXStation 4000
VLC.  I've got OpenVMS installed, but, well, the SCSI2SD gives me two more
2GB disks (the fourth partition is the OpenVMS install CD).

I'd like to put Quasijarus on it.

Problem is, the VLC only supports, as far as I know, SCSI devices.  I'm
quite happy to install Quasijarus under simhfrom an emulated SCSI tape to
an rz device and then just dd the resulting disk image over to the SD
card...but I can't work out how to do it.

This (as my simh ini file) works fine for getting to the emulated console:

set rz0 rzu
att rz0 quas.dsk
set rz4 tz30
att rz4 quas.tap
boot.cpu

Problem is, quas.tap doesn't actually work; neither the prepackaged
4.3BSD-Quasijarus0c.tap nor one I make with mkdisttap.pl and the input
stand/miniroot/etc files.

I get this:

adam@m1-wired:~/Documents/src/quasi$ ./vaxstation4000vlc install.ini

VAXstation 4000-VLC (KA48) simulator V4.0-0 Current        git commit id:
9bf37d3d
/Users/adam/Documents/src/quasi/install.ini-4> att rz4 quas.tap
RZ4: Tape Image 'quas.tap' scanned as SIMH format
/Users/adam/Documents/src/quasi/install.ini-5> boot cpu
Loading boot code from internal ka48a.bin

KA48-A V1.2-32B-V4.0
08-00-2B-B2-35-2C
16MB

?? 010   2       LCG  0086
?? 001   3        DZ  0032
?? 001   4     CACHE  0512
?? 001   7        IT  8706
?? 001   8       SYS  0128
?? 001   9        NI  0024

...
 >> show dev 
  VMS/VMB      ADDR      DEVTYPE    NUMBYTES     RM/FX    WP    DEVNAM
 REV
  -------      ----      -------    --------     -----    --    ------
 ---
  ESA0         08-00-2B-B2-35-2C
  DKA0         A/0/0     DISK         2.14GB      FX            RZ23
 0A18
  DKA100       A/1/0     DISK        ......       FX            RZ23
 0A18
  DKA200       A/2/0     DISK        ......       FX            RZ23
 0A18
  DKA300       A/3/0     DISK        ......       FX            RZ23
 0A18
  MKA400       A/4/0     TAPE                     RM            TZK50
1.1A
  DKA500       A/5/0     DISK        ......       FX            RZ23
 0A18
 ..HostID..    A/6       INITR
  DKA700       A/7/0     DISK        ......       FX            RZ23
 0A18

...
 >> boot mka400: 

-MKA400

?48 ENDOFFILE
HALT instruction, PC: 00000B15 (MOVL (R11),SP)

Sooooo....

How do I make a bootable SCSI tape image from Quasijarus?  Or,
alternatively, how can I create a bootable ISO image from the Quasijarus
installation files (and then either install under simh, or just dd to an SD
partition and boot from there, or even burn to an actual CD and install
from a SCSI CD-ROM drive)?

Adam