I'm sorry I thought bare metal (no operating system) was descriptive enough.

To clarify I will be running this on an Doit ESP32 Devkit V1 Board with a dual core Tensilica Xtensa L6 CPU running at 240 MHz with 4MB Flash and 520K RAM.

The code is Arduino based (it's not my original code).

On 12/5/2024 5:51 PM, Wayne S wrote:
Oh. You didn’t specify the host type, although an esp MAY be fast enough. The 
Vax wasn’t that fast to begin with and ran in less than 4 MB memory so maybe…
Sent from my iPhone

On Dec 5, 2024, at 15:20, Mike Katz <[email protected]> wrote:

Thank you

i don't think an ESP32 has the horsepower to run VMS🙂

On 12/5/2024 5:16 PM, Wayne S wrote:
Under VMS i think the smg$ routines did that.

Sent from my iPhone

On Dec 5, 2024, at 14:43, Mike Katz via cctalk <[email protected]> wrote:
I am looking for a C library that implements a crude windowing system on a 
VT-100 or compatible terminal via the serial port.  I've seen such things 
before but not recently.

I will be running this on bare metal (no operating system). Preferably the 
package would use the regional scrolling capabilities of the VT-100 for faster 
screen updates.

I might be able to get Txwindows to work but I am looking for something a bit 
simpler?

Any ideas would be greatly appreciated.

Thank you....

        Mike

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