On 2020-03-07 01:52, Don North wrote:
On 2020-03-06 02:53 PM, Robert Armstrong wrote:
Another macro11 question - do the apostrophes in the listing indicate
relocatable references, as they do in the DEC version?
If so, then I don't think it's assembling this code correctly -
1 .TITLE TEST RELOCATABLE
REFERENCES
2 000000 .ASECT
3 001000 .=1000
4
5 001234 X == 1234
6
7 001000 005067 001234' CLR X
8
X should be an absolute address, not relocatable.
Bob
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The apostrophe trailing on the octal word indicates that it is a
computed target
address. It is not what you would actually see in the .obj or .bin files.
If you want to force all references to be absolute instead of
relocatable you
can add an ' .ENABL AMA' pseudo-op before the .ASECT pseudo-op. This will
force all relative mode instruction references to become absolute mode. Or
of course you could just do ' CLR @#X' for that instruction.
In the end, that is a different thing. Absolute addressing is not what
Bob was thinking about here...
Here is what MACRO-11 does:
1 000000 .ASECT
2 001000 .=1000
3 001234 X=1234
4
5 001000 005067 000230 CLR X
6
Note that the addressing is still relative. But the actual offset
required can be computed by MACRO-11 at compile time.
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: [email protected] || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
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