JMP

[Guest Close Bruce Lindstrom]

Hi!

I understand that the instruction JMP is disabled in the inline
assembler function in PowerBASIC, right?!

I need to directly jump (JMP) to an address in the ROM, how can I
do that, is there any workaround for this? If not, how do I
'jump' from standard PowerBASIC (by using a BASIC command)?


Thanks for reading!

/Bruce

------------------

[Michael Mattias Member Find all posts View Profile Close Michael Mattias]

Not tested but...it sure looks like

GOTO DWORD addressvar

.. is an unconditional jump.

MCM

[Lance Edmonds Member Find all posts View Profile Close Lance Edmonds]

While GOTO DWORD is fine, !JMP is certainly not disabled or disallowed. It is perfectly acceptable to the compiler.

!jmp abc
end
abc:
print "hello!"

------------------
Lance
PowerBASIC Support
mailto:[email protected][email protected]</A>

[Tom Hanlin Member Find all posts View Profile Close Tom Hanlin]

I think the problem here is that, if it's possible to JMP FAR to a numeric address
in PowerBASIC, the syntax is not obvious. It's conceivable that the assembler does
not support this directly. I know MASM doesn't.

As Michael points out, GOTO DWORD should get you there. If you really want it in
asm, code it directly:

!db &HEA
!dw offset
!dw segment


------------------
Tom Hanlin
PowerBASIC Staff