Because I am using Pascal rather than C, I am not sure that I am correctl=
y
modifying the assembler code to start from address 3 rather than 0. Howev=
er,
I would have thought that would affect operation of the overlying code, n=
ot
the bootloader's ability to load the code. (What I have done in the
assembler is change org 0 to org 3, and a subsequent org 4  to org 8. It
seems to assemble to hex code without complaint).

The change from org 4 to org 8 is certainly _not_ a good thing.

org 4 defines the start of the interrupt handler.

What you need to do, is something like this:

Old  code:

    org    0
    something #1
    something #2
    something #3
    goto    someplace

    org    4
    something #4

    .
    .
someplace:
    something #5

New code:

    org    3
    goto    someplace

    org    4
    something #4

someplace:
    something   #1
    something   #2
    something   #3
    something   #5

Bob Ammerman
RAm Systems
(contract development of high performance, high function, low-level
software)


Any suggestions on what I should do would be appreciated.

Ed Roberts

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