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When configuring an 11/70 with RP,TU,RS - the RS device register range (on RHC) is two words too long and the last two registers appear to be shifted by two words leaving a hole in the…
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I'm involved with the [PiDP-8/I project](http://obsolescence.wixsite.com/obsolescence/pidp-8), and wanted to slow a blinkenlights demo down to human speed so that certain front panel lights weren't ju…
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Something has happened that now causes the old SIMH MicroVAX 3900 microcode self-test to fail. This is using the original ka655.bin that I've been using since SIMH V3.1 (or before).
trillian:~/sim…
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hey there! Really nice guide! But i have some problems when generating a new SSDT. Because i have a diffrent drive.
// ACPI Error: Found unknown opcode 0x15 at AML address 0x7fa35b402e77 offset 0x3…
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The attached file records a session that results in "SYSTEM FAILURE #16"
simh version is 4.0 - Beta compiled with gcc 4.8.2
[system_failure_16.zip](https://github.com/simh/simh/files/689909/syst…
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I've noticed that, both when running ITS in an emulated PDP-10 as well as UNIX/32V in a VAX 780 on my GNU/Linux machine, the time in the emulator slowly drifts out of sync with real time. The emulator…
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The latest sources from git are unable to open external files. I'm guessing this is related to the VHD changes? ff95fb8e (built Nov. 19) was fine, but 1ec46fbe (built today) is not:
VAX 8600 simu…
hbent updated
7 years ago
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One of the recent changes seems to have broken VH (DHU mode) support in Ultrix 4.5.
ULTRIX V4.5 (Rev. 47) System #8: Thu Apr 14 22:20:36 EDT 2016
...
Warning: DHU device failed to exi…
hbent updated
7 years ago
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I have been using a build I did in March 2016 with the following SHOW VERSION output:
sim> show version
MicroVAX 3900 simulator V4.0-0 Beta
Simulator Framework Capabilities:
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- #### Context
I would like to be able to connect the emulated machine's serial ports to a PTY, to have it communicate with another emulated machine via a simple socat buffer.
- #### the outpu…