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- Date: Tue, 14 Sep 93 17:14:52 -0400
- From: dsb@cs.duke.edu (Scott Bigham)
- Message-Id: <9309142114.AA19183@amazon.cs.duke.edu>
- To: mint@terminator.rs.itd.umich.edu
- Subject: Tracing MiNT startup
-
- Well, porting MiNT to HSC has so far not borne fruit. It compiles with
- relatively little modification, but the resulting program locks up
- during startup. Using ye olde printf() method of debugging[*], I've
- tracked it as far as init_intr(), but any GEMDOS/BIOS/XBIOS calls after
- that don't happen -- which is not surprising, since these vectors are
- in a sense "in flux" at that point.
-
- So I come to you all for advice. My questions are:
-
- - At what point after the call to init_intr() does it again become safe
- to call GEMDOS/BIOS/XBIOS routines?
-
- - Alternatively, is there a way to generate "output" without going
- through these vectors? By "output" I mean changing screen colors,
- beeping, basically anything I can use to create a detectable
- "checkpoint" in the code.
-
- Incidentally, I tried using bconout() from bios.c to do "checkpointing",
- with the result that MiNT suddenly booted all the way up (to my
- astonishment), and then started acting weird, finally dying with the
- message: "pid 0 ([garbage]): Unable to remove process from queue".
- This is obviously not good, and I conclude that that was probably not
- what bconout() is supposed to be used for.
-
- -sbigham
-
- [*] I've yet to find a debugger that works well with the combination of
- MiNT and HSC, and taking a debugger to the operating system is not
- exactly my idea of a fun afternoon anyway.
-