The problem is that ISFAT32 macro only tests for dpb->fatsize = 0, and
not also for xfatsize != 0. So the ISFAT32 macro returns a
"false positive" on uninitialized dpbs, where both fatsize and xfatsize
are zero.
This fixes https://github.com/FDOS/kernel/issues/200. However, the dpb
is not properly initialized via a media check by an INT25,26 yet.
This commit makes sure that written sectors are removed from the
block cache.
* Reject allocation call with too large requested size,
rather than allocating the remaining HMA.
* Align returned offset to paragraph boundary.
* Allow to allocate up to the very last byte of the HMA,
rather than 1 byte less.
* Pass last allocated byte to AllocateHMASpace instead
of the byte past it, which would carry for a full allocation.
apply suggested fix from SF bug 215 (https://sourceforge.net/p/freedos/bugs/215/), InDOS cleared but small chance DOS re-entered before user stack restored thus corrupting user stack
For now we still only support subfunction 3 (return drive table) and subfunction 0 (check if installed) which we say yes. This allows DOS Internals DRVINFO.EXE to correctly use internal drive table (it checks if installed and doesn't bother if not) and return corresponding information. Note: subfunction 3 is still handled in int2f.asm for now, but may be moved to cleaner (but bigger and slower) implementation in inthndlr.c
In combination with SWITCHES=/N in fdconfig.sys this commit makes
it so only proper CR LF linebreaks are displayed, for instance when
piping dosemu2 output to a file.
SWITCHES=/F will set SkipConfigSeconds so that config.c SkipLine will
display a string reading "\r%79s\r" to delete the prompt that it has
displayed. This overwriting should not be needed for SkipConfigSeconds=0
however. Refer to subsequent commit.
currently only skeleton logic and implementation of install check & get drive data table list [returns ddt* which allows mapping DOS drive # to BIOS drive # for drives handled by default DOS block driver]
these symbols are in LGROUP and generaly cannot be addressed by DGROUP:offset
for Turbo C DGROUP offset overflow because symbols are too far to be addressed by DGROUP offset
move only options which is related to the host environment not for target
-zq quiet output (all)
-fo=.obj set default extension for object file to .obj instead .o (Linux only)
