If you wanted an Emulator what would it be?

[JohnElliott]

By the same token, it would be nice if there was a PC emulator that emulated one of the Z80-on-an-ISA-card solutions, like the Baby Blue or UniDOS cards (UniDOS also had a version for V20 processors). These tended to emulate CP/M at the BDOS level, forwarding CP/M calls to PC-DOS.

 

[Al Kossow]

I bought these when they came up on eBay recently because I didn't know Z-World made a 64180 board

Pardon Our Interruption...

 

[rcman2]

The NEC V20 can be seen as an Intel 8088 and an Intel 8080 in one processor. The V30 is 8086 plus 8080. CP/M was originally developed for the 8080. The V20-MBC proofs that it is possible to run 8086 code and CP/M in the same computer because of the use of the V20. Run, not emulating it! If this V20-MBC can do it, why not any PC equipped with a V20/V30?

When I looked it up it said the V20/V30 was just an 8088 emulator. When I googled it that's what it told me.

RC

 

[shattered]

By the same token, it would be nice if there was a PC emulator that emulated one of the Z80-on-an-ISA-card solutions, like the Baby Blue

MAME has Baby Blue II

 

[rcman2]

You should know that much of the operating system was written in microcode. Most of the processors were dedicated to the system. Two processors were for running user code, which could be the native BCC 500 instruction set, or emulating the SDS 940 (I know you knew this part). The emulator I started is for running the microcode.

The BCC 500 was an ARPANET host. My motivation flagged when I didn't see any networking code in the avilable software. It seems to me there was a PDP-11 ELF frontend handling the network.

Would you have the SDS 940 ICL startup sequence documentation already?

I have put the BCC-500 emulator on hold for a few weeks while I work on other things. Based on the documentation I found the BCC-500 was nothing like the SDS-940. Even from the diagrams I found that clearly shows that.

Any input would be great.

RC

 

[Jazzy]

How about an emulator that can run IBM AIX? Afaik that doesn't exist.

QEMU supports emulating the Power platform. The link provided is for recent versions on the ppc64 machine type, but QEMU can also emulate a 40p which supports AIX 4.3.3 and 5.1.

See https://tyom.blogspot.com/2019/04/aixprep-under-qemu-how-to.html

Apparently you need to use that branch since not all required patches are included in the master branch. For me personally neither of these options work on QEMU on MacOS/M1. After booting from cd the process hangs.