On Thu, May 29, 2025 at 2:04 PM Bill Gunshannon via cctalk
<[email protected]> wrote:
>
>
>
> On 5/28/2025 4:32 AM, Sean Conner via cctalk wrote:
> >
> >    Nope.  ECB supports hexadecimal constants.  It sounds like the BASIC you
> > have doesn't.  I know Microsoft's 8-bit BASICs were all compiled from a
> > common code base, so it may be that the Model III BASIC didn't opt for
> > hexadecimal support, but no one told the documentation department.
>
> Nope, not just the documentation.  PRINT &H7D00 works fine
> DEFUSR1 = &H7D00 returns syntax error.  Go figure.

Have you tried :

DEFUSR1=(&H7D00)

DEFUSR1=&H7D00+0

I assume you're running TRS-DOS. What happens if you use LBASIC under LDOS?

-tony

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