Update on the emulator

[Bob Flanders]

I have recently been working a bit on the never-done S1130 project. It's available in github at https://github.com/semuhphor/S1130/tree/feature/web-frontend.

It is far from complete. If you can start the system using docker, (there's a docker compose file) it brings up a pro-forma web site that has an assembler program on the left. You can assemble it and step through it. Right now, BSC is broken in the assembler.

This is completely pro-forma. Ultimately I want to be able to give it a deck and have it run through and show the printed output. The emulator itself has a lot more, but it the front end needs a lot of work.

Much of the front end was written by copilot.

It is fully test driven. there are currently 473 tests in the system with 450 being for the emulator. 

Note that it's written using VSCode, dotnet 8, node and npm.

Regards,

Bob

[Bob Flanders]

Hi all,

I have fixed a number of bugs in the emulator and have a working demo.

It turns out that a decade or so ago, I did a poor job of advancing the IAR .. it was not a part of executing an instruction. Now, the instruction execution sets the IAR properly to the next address to execute.

The demo just assemble and executes a small program, reflecting the CPU state on the right side.

[Richard Stofer]

Lovely work!

On Oct 26, 2025, at 5:39 PM, Bob Flanders <bob.fl...@gmail.com> wrote:

Hi all,

I have fixed a number of bugs in the emulator and have a working demo.

It turns out that a decade or so ago, I did a poor job of advancing the IAR .. it was not a part of executing an instruction. Now, the instruction execution sets the IAR properly to the next address to execute.

The demo just assemble and executes a small program, reflecting the CPU state on the right side.

<Screenshot 2025-10-26 at 20.38.00.png>

On Tuesday, October 21, 2025 at 1:05:55 PM UTC-4 Bob Flanders wrote:

I have recently been working a bit on the never-done S1130 project. It's available in github at https://github.com/semuhphor/S1130/tree/feature/web-frontend.

It is far from complete. If you can start the system using docker, (there's a docker compose file) it brings up a pro-forma web site that has an assembler program on the left. You can assemble it and step through it. Right now, BSC is broken in the assembler.

This is completely pro-forma. Ultimately I want to be able to give it a deck and have it run through and show the printed output. The emulator itself has a lot more, but it the front end needs a lot of work.

Much of the front end was written by copilot.

It is fully test driven. there are currently 473 tests in the system with 450 being for the emulator. 

Note that it's written using VSCode, dotnet 8, node and npm.

Regards,

Bob

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<Screenshot 2025-10-26 at 20.38.00.png>

[Bob Flanders]

Thank you, Richard. How are you?

On Mon, Oct 27, 2025 at 11:43 AM 'Richard Stofer' via IBM1130 <ibm...@googlegroups.com> wrote:

Lovely work!

[Claudio Vincenzi - GMail]

Hi Bob

Nice job!

Claudio Vincenzi

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