MicroVAX I Emulation

In the hope of getting some practice on the machine while i wait for parts i thought that i could try out the simh emulator.

I downloaded the windows version from here:

https://github.com/simh/Development-Binaries/blob/master/simh-2024-07-05_06-07-03-Windows-Win32-4.0-Current-670a3728.zip

https://github.com/simh/open-simh/blob/master/SIMH-V4-status.md

I created a windows folder with the MicroVAX1.exe file as a starting point.

There’s a nice guide to installing MicroVMS 4.0 here:

https://gunkies.org/wiki/Installing_and_Configuring_MicroVMS_V4.0_on_a_MicroVAX_I#Start_the_SIMH_MicroVAX_I_Simulator

I added the disk images and the ini file from the above link. Joy was had.

Attempts to use alternative disk and tape drives are somewhat frustrated by the limitations of the Microvax I, specifically the RQDX1 controller. There is no tape drive controller included in the Microvax I simh model. It may be possible to add one, but that is beyond my capabilities at present.

2 thoughts on “MicroVAX I Emulation

  1. I see you used my “Guide to installing MicroVMS 4.0” from the Computer History Wiki. I’ve got the MV I diagnostics on RX50 images (and on real RX50s of course), maybe you want those?
    I conclude from your web address that you’re probably from Australia, right?
    Cheers,
    Ulli.

    1. Your guide is great! As a complete newbie i would have been lost without it. I think i have the images for the diagnostics but i have not tried to execute them yet.

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