This source was reconstructed to match MUDSAV; TS MUD54 from 1977-07-02,
using a combination of all the surviving Muddle source files. The memory
layout and pure code is the same.
No AGC MUD54 has survived, so the AGC code was adjusted to match the
TOPS-20 agc.mud104 from Chicago that Rich Alderson provided (the only
ITS conditional is the page size). There's a one-instruction difference
in the symbol positions, which I've converted into a patch at the end of
the code to maintain the original layout on ITS.
The INITM code, which doesn't appear in the final executable, is
a best guess but it's probably fairly close, since it generates objects
in the right order and locations, and the symbol locations match the
original.
The 1977 executable has a very large number of patches, which I've
replicated in MUD54 INIT. The code that the patches were replacing --
marked with "XXX patched" in the source -- is also a best guess.
I haven't checked that the TOPS-20 code is correct; it could be adjusted
to match mdl104.exe in the future. It would need STENEX, which could be
linked from MUDSYS;.
Previously the first XFILE printed out some commands to run after STINK
had completed, which is awkward if you're building Muddle repeatedly.
This automates the second half of the build process.
Lars has found a couple of examples of TS MUD54 files, and they're the
initialised version (with references to internal functions filled in,
etc.). TAA's ZORK launcher also expects TS MUDxx to be the initialised
version. So it appears that the ITS version didn't generate TS MDLxx.
(Why does the initialisation process write out TS MUD56, then, if you're
only going to pdump the result over it? Because the last step in
initialisation is to invoke the GC, and getting back from the GC to the
interpreter requires mapping pages back in from the executable.)
Found from comparison with a TS MUD54 binary. The Muddle 56/106 source
came from TOPS-20 originally, and it had been extracted with newline
conversion but not ITS encoding.
Most of these are cosmetic, but there are a couple of VALRET strings
with embedded \rs -- including the one used to exit initialisation.
So successful initialisation now finishes with a *, rather than opening
a random location.
This replaces the existing MUDSYS;STINK 2 that was installed as TS
STINKM. The bad-EXPUNGE patch in there is no longer needed now Muddle is
built with MIDAS 73.
Used to send a form for a Muddle job to evaluate, printing the result.
Aliases:
- PURGE, flushes Zork.
- MAKSCR, make Zork script.
- STATUS, queries status of compiler.
- WHOM, lists listening Muddle jobs.
The MDL 54/104 and 55/105 manuals give the name SYS:TS MDL for the
interpreter, and a comment in MAIN says it was TS MUDDLE, so install
links for both.
