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Bug Report, IBM SYSTEM/3

Status: Open.

#561 In open-simh/simh;

· wcarlborg opened on Jun 25, 2026

i7010: Spurious errors in Autocoder Assember using BCE instruction

Status: Open.

#560 In open-simh/simh;

· cube1us opened on Jun 21, 2026

i7010: Returns incorrect status for an invalid character

Status: Open.

#559 In open-simh/simh;

· cube1us opened on Jun 20, 2026

Feature Request: AltairZ80 - 88-VI/RTC and a time-of-day clock.

Status: Open.

#558 In open-simh/simh;

· RichCini opened on Jun 1, 2026

Cleaning up documentation (like SIMH-V4-status.md)

Status: Open.

#556 In open-simh/simh;

· AliSajid opened on May 28, 2026

set cpu noeae not being honored

Status: Open.

#553 In open-simh/simh;

· jnpastin opened on May 17, 2026

Endless undefined behavior bugs in SIMH

Status: Open.

#552 In open-simh/simh;

· pmetzger opened on May 8, 2026

lack of delay in setting done on LPCB in lpt647 (Was "Wrong PDP-7 line printer interface")

Status: Open.

#551 In open-simh/simh;

· Frodevan opened on May 6, 2026

Create a CONTRIBUTING.md file with guidelines for contributors

Status: Open.

#548 In open-simh/simh;

· LegalizeAdulthood opened on May 3, 2026

VAXstation 4000 VLC emulator is very broken

Status: Open.

#546 In open-simh/simh;

· pmetzger opened on Apr 28, 2026

%* DO-argument expansion bug in scp.c::sim_sub_args()

Status: Open.

#545 In open-simh/simh;

· pmetzger opened on Apr 21, 2026

wrong buffer parsed after environment lookup

Status: Open.

#544 In open-simh/simh;

· pmetzger opened on Apr 21, 2026