Hello Roger,
Here BELOW is a piece of disassembled code, from my archives, of very
long ago ;-) , in another life ...)
if the same byte could not be interpreted
either as data
or as pointer
or as instruction
depending on where "WE" are ...
no microprocessor would function :-)
It is a weird miracle that computers were invented :-)
Best
-- Jean-Luc (in MCB<ssen, Schleswig-Holstein)
https://www.tamilex.uni-hamburg.de/team/chevillard.html
++++++++++++++++++++
LAMBDACB CB CB CB CB PROC
CB CB CB cld
CB CB CB cli
CB CB CB movCB CB CB CB CB CB CB sp, offset top_stack
CB CB CB sti
CB CB CB std_errCB CB CB CB CB CB CB PubCB CB ; numC"BBro de version
CB CB CB CB CB CB CB pushCB CB CB dsCB CB CB CB CB CB CB ; *
CB CB CB CB CB CB CB CB CB subCB CB ax,ax
CB CB CB CB CB CB CB CB CB movCB CB ds,ax
CB CB CB CB CB CB CB nop
CB CB CB CB CB CB CB CB CB movCB CB ax, DS:24CB CB CB CB CB CB CB CB CB ;CB CB sauvegarder
CB CB CB CB CB CB CB CB CB movCB CB cs:int9low, axCB CB CB ;
CB CB CB CB CB CB CB CB CB movCB CB ax, DS:26CB CB CB CB CB CB CB ;
CB CB CB CB CB CB CB CB CB movCB CB cs:int9high, axCB CB CB ;CB CB le vecteur NCB8 9
CB CB CB CB CB CB CB CB CB cli
CB CB CB CB CB CB CB CB CB movCB CB ax,offset kb_int_process;
CB CB CB CB CB CB CB CB CB movCB CB DS:24,axCB CB CB CB CB CB CB CB CB CB CB CB CB ;CB CB installer
CB CB CB CB CB CB CB CB CB movCB CB ax,csCB CB CB CB CB CB CB CB CB CB CB CB CB CB CB CB ;CB CB le nouveau vecteur NCB8 9
CB CB CB CB CB CB CB CB CB movCB CB DS:26,axCB CB CB CB CB CB CB CB CB CB CB CB CB ;
CB CB CB CB CB CB CB CB CB sti
CB CB CB CB CB CB CB popCB CB CB dsCB CB CB CB CB CB CB ; *
CB CB CB CB CB CB CB nop
BB:CB CB CB nop
CB CB CB nop
CB CB CB jmpCB CB CB AA
AA:CB CB CB nop
CB CB CB cmpCB CB CB byte ptr cs:scan_read, 81h
CB CB CB jzCB CB CB CC
CB CB CB nop
CB CB CB jmpCB CB CB BB
CC:
CB CB CB CB CB CB CB pushCB CB CB dsCB CB CB CB CB CB CB ; *
CB CB CB CB CB CB CB CB CB subCB CB ax,ax
CB CB CB CB CB CB CB CB CB movCB CB ds,ax
CB CB CB CB CB CB CB nop
CB CB CB CB CB CB CB cli
CB CB CB CB CB CB CB CB CB movCB CB ax,cs:int9lowCB CB CB CB CB CB CB ;
CB CB CB CB CB CB CB CB CB movCB CB DS:24,axCB CB CB CB CB CB CB CB CB CB CB ;CB CB restaurer
CB CB CB CB CB CB CB CB CB movCB CB ax,cs:int9highCB CB CB ;CB CB le vecteur NCB8 9
CB CB CB CB CB CB CB CB CB movCB CB DS:26,axCB CB CB CB CB CB CB CB CB CB CB ;
CB CB CB CB CB CB CB sti
CB CB CB CB CB CB CB popCB CB CB dsCB CB CB CB CB CB CB ; *
CB CB CB CB CB CB CB nop
CB CB CB returnCB 0
LAMBDACB CB CB CB CB CB CB ENDP
+++++++++++++++++++++++++++++++++++++++++
On 11.04.2025 12:31, Roger L Costello costello@xxxxxxxxx wrote:
Hi Folks,
Occasionally friends come over to my home and I take them on a walk around the neighborhood. When I see some thing interesting, I raise my hand and position my index finger in the direction of the interesting thing. That is, I point at the interesting thing. It seems to me, that that is a real pointer--my index finger pointing at some thing.
XML has pointers, e.g.,
<Book ref="SK">...</Book>
<Author id="SK">Stephen King</Author>
The value of the ref attribute, "SK", points to <Author id="SK">
"SK" doesn't look like a pointer to me. It looks like data. XML-aware tools, however, treat it as a pointer to the <Author> element with a matching id value.
HTML has pointers, e.g.,
<a href="#lesson1">...</a>
<p id="lesson1">...</p>
The value of the href attribute, "#lesson1", points to <p id="lesson1">
"#lesson1" doesn't look like a pointer to me. It looks like data. HTML-aware tools, however, treat it as a pointer to the <p> element with a matching id value.
I conclude that, in XML and HTML, a pointer is not a pointer at all. It's data. It's data that is repeated elsewhere in the document: ("SK" ... "SK"), ("#lesson1" ... "lesson1"). For this "pointer fiction" to work, a tool that processes the document must participate in the fiction and treat ref="SK" as pointing to <Author id="SK"> and treat href="#lesson1" as pointing to <p id="lesson1">.
Isn't that weird?
/Roger
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