tools.nes/scripts, branch mainTools for NES/Famicom development.
https://git.mssola.com/nes/tools.nes/atom?h=main2026-10-09T19:45:05Zvnf,runrom: detect bad data access2026-10-09T19:45:05ZMiquel Sabaté Solàmssola@mssola.com2026-10-09T19:45:05Zurn:sha1:f6df4314945c1d37d314a7c88553b97b23c748e9
This includes detection for:
- Stack underflows (it was theoretically already there but it had never
been properly tested).
- Load/store out of bounds for a given variable known via the .nasm/
directory.
- Load out of bounds on a set of data referenced via a raw label (see
commit aa5174fc055d ("xixanta: Add an hint for the ending of data
labels")).
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Don't error out on conditional .include2026-10-06T15:33:16ZMiquel Sabaté Solàmssola@mssola.com2026-10-06T15:33:16Zurn:sha1:e71a73d0875c416507a3207bdec6fee145a79f68
The hard requirement that an .include statement cannot be inside of
another block was, in the end, a bit short-sighted. Imagine the
following block:
.ifdef DEBUG
.include "debug.s"
.endif
This is perfectly sound-looking code, and it should not be punished as
the developer is doing something that is not bending the assembler in
weird ways. Hence, just nuke this check.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
readrom: add support for MMC32026-10-06T15:06:39ZMiquel Sabaté Solàmssola@mssola.com2026-10-06T15:06:39Zurn:sha1:b2ec385bf83ad895208e7eb481f704cf8a12a6c6
In theory it's support for any kind of memory mapper, but in practice
only MMC3 has been added.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
nasm: warn on labels that point out of bounds2026-09-29T21:37:48ZMiquel Sabaté Solàmssola@mssola.com2026-09-29T21:37:48Zurn:sha1:54e3fc561add5ce9d776a11a286b988aacb59daa
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
fuzz: change names to have dashes instead of underscore2026-09-15T16:02:43ZMiquel Sabaté Solàmssola@mssola.com2026-09-15T16:02:43Zurn:sha1:01bb4fee8c45caee757b3bdc5432fd88dbcdfca3
From the latest update of Rust's stable channel, this was raised as a
bad format for fuzz names.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
vnf: display also the break mark on report()2026-09-07T21:19:53ZMiquel Sabaté Solàmssola@mssola.com2026-09-07T21:19:53Zurn:sha1:e2a20dedc354c0b8d2e5253ffd4ac22d2b2898aa
When reporting the final instruction, if that was actually a brk (and
hence we stopped because of it), show the breaking mark as that could be
relevant when debugging.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
vnf: add the 'Machine.halt_on_brk' field2026-09-07T21:03:55ZMiquel Sabaté Solàmssola@mssola.com2026-09-07T20:31:33Zurn:sha1:a17bd972a99007099057d7901b88732b22d08270
This allows developers to use 'brk' as asserts which can then be
debugged. This is true by default but it can be turned off via the
--no-halting-brk option from runrom.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
tests: add a test on branching instructions2026-09-06T20:55:50ZMiquel Sabaté Solàmssola@mssola.com2026-09-06T20:55:50Zurn:sha1:2d61e42fab657d61212a7aff1ecacbd674be8cda
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
vnf: also set the carry on a zero compare2026-09-06T19:42:34ZMiquel Sabaté Solàmssola@mssola.com2026-09-06T19:42:34Zurn:sha1:9c685d5b6ca1686f944fb239ec89511f24801d44
Add also a test to further check corner cases on compare instructions.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
vnf-tests: set the proper exit code on e2e tests2026-09-06T19:37:31ZMiquel Sabaté Solàmssola@mssola.com2026-09-06T19:37:31Zurn:sha1:30a572b2b3815abaf17dcd2a848430935a4ba729
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>