microvax2 unable to boot quasijarus0c

[RSX11MPLUS]

• Context

i have an ra92 disk image (created within simh) with quasijarus0c installed from tape. this image will boot normally on a real, similarly configured ka630, but hangs (i believe trying to find a boot block) within the microvax2 simh. it is also not possible to initiate the install from tape due to an I/O error on the controller:

=copy
cpu: uVAX II
From: tms(0,1)
To: ra(0,1)
ra: I/O error
ra(0,0,0,1): can't read disk label

i have confirmed this behavior occurs on every ra8x/9x series drive and both rqdx3 and kda50 controllers.

• the output of "sim> SHOW VERSION" while running the simulator which is having the issue

sim> sh ver
MicroVAX II (KA630) simulator Open SIMH V4.1-0 Current
    Simulator Framework Capabilities:
        64b data
        64b addresses
        Threaded Ethernet Packet transports:PCAP:TAP:NAT:UDP
        Idle/Throttling support is available
        Virtual Hard Disk (VHD) support
        Asynchronous I/O support (Lock free asynchronous event queue)
        Asynchronous Clock support
        FrontPanel API Version 12
    Host Platform:
        Compiler: GCC 12.2.0
        Simulator Compiled as C arch: x64 (Release Build) on Mar  8 2024 at 20:45:23
        Build Tool: simh-makefile
        Memory Access: Little Endian
        Memory Pointer Size: 64 bits
        Large File (>2GB) support
        SDL Video support: SDL Version 2.28.5, PNG Version 1.6.40, zlib: 1.3
        PCRE RegEx (Version 8.45 2021-06-15) support for EXPECT commands
        OS clock resolution: 1ms
        Time taken by msleep(1): 1ms
        Ethernet packet info: libpcap version 1.10.4
        OS: FreeBSD datz.lab.rsx11m.io 14.0-RELEASE FreeBSD 14.0-RELEASE #0 releng/14.0-n265380-f9716eee8ab4: Fri Nov 10 05:57:23 UTC 2023     [email protected]:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64
        tar tool: bsdtar 3.7.1 - libarchive 3.7.1 zlib/1.3 liblzma/5.4.4 bz2lib/1.0.8 libzstd/1.5.2
        curl tool: curl 8.6.0 (amd64-portbld-freebsd14.0) libcurl/8.6.0 OpenSSL/3.0.12 zlib/1.3 libpsl/0.21.2 libssh2/1.11.0 nghttp2/1.58.0
        git commit id: 625b9e8d
        git commit time: 2023-11-16T16:23:53-0800

• how you built the simulator or that you're using prebuilt binaries

built with BSD build instructions (gmake, gcc, etc)

• the simulator configuration file (or commands) which were used when the problem occurred.

set cpu 13m, idle, conhalt

set rq en
set rq0 ra92
at rq0 wooyoo-43bsd-root.ra92
set tq en
set tq0 lock
at tq0 4.3BSD-Quasijarus0c.tap

set xq en
at xq0 em0

b cpu

• the expected behavior and the actual behavior

KA630-A.V1.3

Performing normal system tests.

  5..4..3..

Tests completed.


>>> b

  2..                                  <--- hangs here
Simulation stopped, PC: 0000130B (BITW #8080,(R7))

• you may also need to provide specific pointers to data files that may be necessary to demonstrate the problem

can provide my disk image if it helps

[rms47]

Did quasijarus0c support CVAX (MicroVAX 3900)? If so, does this procedure - building and trying to boot quasijarus0c - work or fail on CVAX?

[hbent]

Perhaps the fix from ccdc5d0 will solve the issue here?