Commit Graph

10 Commits

Author SHA1 Message Date
Michael Martin
47be777884 Test suite: new tests for basic I/O and binary transforms 2012-06-08 21:50:28 -07:00
Michael Martin
e44ad61af9 Improved test script
This script requires Python 2.4, for the subprocess module.
2012-06-08 02:49:29 -07:00
Michael Martin
cf0df92fb1 Wrap up the new file/dir handling.
An .outfile directive lets sources suggest default filenames.

Also, .include, .require, .incbin, and .charmapbin are relative
to their _source file_ as opposed the _directory you called Ophis
from_, like it really should have always been.
2012-06-03 19:50:17 -07:00
Michael C. Martin
14a37ca879 Massive code modernization spree.
Full PEP8 compliance. Also, booleans have been inserted where
they make sense (introduced in 2.3!) and I haven't knowingly
added anything that will break 2.3 compatibility.

At this point the code really doesn't look like it was written
ten years ago. Hooray!
2012-06-02 00:04:15 -07:00
Michael C. Martin
1bbb2f1f1b Braindead test script 2012-06-01 00:24:30 -07:00
Michael C. Martin
eae4ea7dcd Extend .advance to allow a filler expression. 2012-05-30 20:45:37 -07:00
Michael C. Martin
57e663cf29 Remove spurious CRLFs 2012-05-29 18:24:20 -07:00
Michael C. Martin
af50326e39 Add the NOP Zero Page undocumented opcode.
This seems to be one of the preferred undocced ops in the Atari
2600 VCS development community.
2012-05-29 18:24:20 -07:00
Michael C. Martin
f8bc917601 A new 'correctness optimization': ExtendBranches.
This pass actually isn't an optimizer in that it produces larger
binaries when it triggers. However, the larger binaries created
will actually assemble properly.

The ExtendBranches pass detects Relative instructions (that is,
branches) that extend past the signed-8-bit range Relative instructions
permit, and replaces them with a branch-jump combination with identical
semantics.

Since this may be evidence of a program bug, Ophis will warn when
the optimization is triggered.

Due to similarities between this pass and UpdateLabels, both passes
have been refactored in passing.
2012-05-27 15:57:23 -07:00
Michael C. Martin
2c8dba2450 Initial import of the Ophis 1.0 distribution and supplemental material 2011-08-20 16:33:25 -07:00