history.txt

GNU FreeDOS兼容MS DOS很好的东东.

    * hdr/fat.h, fatdir.c, fatfs.c, fattab.c, prf.c, proto.h:
      + FAT32 kernels should ignore the upper word of the cluster
        number for FAT16 partitions (just like FAT16 kernels do)
      + added extra checks to make sure that invalid FAT entries are
        never followed
      +	print a message in case of FAT corruption
      + some small optimizations and header cleanups (some suggested by
        Arkady)
    * config.c: Make strupr code unambiguous
    * filelist, sys/makefile, sys/sys.c, sys/talloc.c: ~1K size
      reduction for sys.com by using Tom's talloc.c malloc/free
      functions and using our own filelength for watcomc.
    * initdisk.c: Better (for FAT32) and simpler FAT default
      value calculations.  Also use 16-bit instead of 32-bit quantities
      where possible to save code size. Use a FAT32 table so that FATs
      won't be too big for drives <= 64 GB
    * dosfns.c: Do not clobber the DTA if findfirst or findnext fails.
      Fixes bug #1712
    * fatfs.c: Rename blockio by rqblockio (namespace conflict with dsk.c)
    * inthndlr.c: FAT32 kernels should fail int21/ah=71 with
      al=0, carry set.
    * hdr/portab.h, nls.c: (as reported by Tom) Fix nls upcase problem
      with SS!=DS.
    * fatfs.c: Move permission check to better place (only for
      necessary for opening existing files), not for creating them --
      suggested by Steffen. Force r/o open for FCB and legacy creat
      if the file is read-only
    * fatfs.c: Move common code in media_check() to a new
      blockio() function.
    * fcbfns.c, globals.h, inthndlr.c: Change FcbReadWrite to
      handle multiple records at once; this allows for the optimization
      of FcbRandomBlockIO.
    * fcbfns.c: Divide optimisation (ceiling) + some small cleanups
    * fcbfns.c, globals.h, kernel.asm: Rename the global lpFcb
      variable to sda_lpFcb. Then use local lpFcb variables where
      necessary. This clears up the confusing shadowing.
    * fcbfns.c, inthndlr.c, proto.h: Fix FCB problems with
      int21/ah=27,28 (RandomBlockIO)
    * boot32.asm: jmp -> jmp short (necessary for nasm 0.98)
    * dosfns.c, inthndlr.c, proto.h: Implement support for
      int2f/ax=1220.  Fix int2f/ax=1216 (needs sft handles, not psp
      handles, and to return the relative handle in BX, and to deal
      with carry)
    * boot.asm: Fix problem with FAT12
+ Changes Eric Luttmann <[e-mail]>:
    * main.c: Fix for multisegmented device drivers: If there are multiple
      device drivers in a single driver file, only the END ADDRESS
      returned by the last INIT call should be the used.  It is
      recommended that all the device drivers in the file return the
      same address.  This fixes a load problem with DUSE.
    * config.c, init-mod.h, main.c: fix for multi-segment device
      drivers; preserve rq_endaddr between init calls for the same driver.
+ Changes Lucho:
    * inthndlr.c: Remove AL=0 check for AH=6c (from Arkady) Optimize DL check.
    * main.c, serial.asm: (with some help from Tom):
      initialize serial ports and retry serial reads on timeout.
    * sys.c, boot.asm, boot32.asm, boot32lb.asm:
      SYS 3.0 changes: added /L parameter to SYS to be able to change
      the kernel boot segment + a few boot sector changes to get the
      pointer at the same magic place for all boot sectors.
    * makefile: clean up *.lnk files for "clean" and "clobber".
    * dsk.c: the DJ mechanism needs to affect MEM 0050h:0004h - MS-DOS
      LOGICAL DRIVE FOR SINGLE-FLOPPY SYSTEM (A: / B:) Size:BYTE
    * int2f.asm, generic.mak: basic implementation of INT 2F/ax=4a33 -
      CHECK MS-DOS VERSION 7; necessary for SpinRite (Steve Gibson)
    * inthndlr.c: implement int2f/ax=1211 NORMALIZE ASCIZ FILENAME
    * config.c, init-mod.h, main.c: Added SET support to config.sys

2003 Sep 24 - Build 2032a
-------- Bart Oldeman ([e-mail])
+ Changes Bart
    * fix segment problems with ctrl-c and character uppercase
      handlers
    * fix critical error callers to set the critical error code
      immediately before calling the handler (in case they call
      DOS-59); don't set the critical error in inthndlr.c if
      something else already did. Return with an errorcode if
      "truename" and "read"/"write" encountered a critical error.
    * sys.c: add /k kernname.sys option to and straighten out SYS option
      processing; remove the metakern magic.
    * config.c: ignore the segment part for multi-part device drivers

2003 Sep 21 - Build 2032
-------- Bart Oldeman ([e-mail])
+ Changes Rune Espeseth <[e-mail]> (modified by Bart)
    * config.txt, config.c: Full screen config.sys menus (use MENUCOLOR=)
+ Changes Michal Bakowski ([e-mail])
    * initdisk.c, kernel.asm: Change the boot drive to always
      be C: if DLASortByDriveNo==1
+ Changes Arkady
    * dsk.c: Use memcpy instead of fmemcpy; avoid downcasting
      from far to near.
    * sysclk.c: err if sizeof(struct ClockRecord) != rp->r_count
      move year init below reading the BIOS
    * main.c: init_device corrections/cleanups
    * device.h: Change r_status and dh_name to unsigned quantities.
    * task.c: Free memory if there is an error in the relocation
      table.
    * floppy.asm, getvec.asm, rdatclk.asm, rdpcclk.asm, wrpcclk.asm:
      driver .asm files optimizations (also from Bart); remove
      obsolete rdatclk.
    * build.txt: Fix some typos.
    * inthndlr.c: Add missing (); small optimization for DosGetdate/time.
+ Changes Lucho
    * boot.asm, boot32.asm, boot32lb.asm, sys.c: add metakern support:
      sys looks for a file metakern.sys which is a multiple of 512.
    * break.c: Fix ctrl-break bug.
    * ioctl.c: IOCTL 4406 provided reverse AL output on regular
      files - FF if EOF, 0 if not. It should output 0 if EOF, FF if not.
    * initclk.c: Initclk changes
    * config.c, init-mod.h, initoem.c: Support for
      switches=/e[[:]nnnn] and for moving the EBDA
    * fatfs.c: Use 0x10000UL (avoids Turbo C warning)
    * sys.c: Move manually added "RCS" entries to the CVS log.
    * main.c: Adjustments for MSVC.
    * ioctl.c: int21/ax=440d lock/unlock logical/physical volume
      simulate success for MS-DOS 7+ SCANDISK etc. --LG
    * main.c: && should be || in check for \, / and :
    * task.c: Adjust registers used when starting programs. Some
      demos expect undocumented values (with Bart).
    * mscl8.mak: Forgotten HMA_TEXT for MS compilers.
    * sys.c: Add lock/unlock drive to SYS
    * history.txt: Changelog correction.
    * fatfs.c: Use near bpb on the stack in bpb_to_dpb.  Make
      sure the number of FAT sectors is actually enough to hold that
      many clusters. Otherwise back the number of clusters down
    * procsupt.asm, proto.h, task.c: Don't disable a20 for
      "exit" int21/ah=4c
+ Changes Lucho, Tom, Eric
    * boot.asm, boot32.asm, boot32lb.asm, makefiles, sys.c:
      * boot.asm modified to support non-512 byte sectors
        (e.g. 1.2 MB NEC diskettes)
      * 512 byte sector size check removed (although Eric's boot32ea.asm
        does require 512-byte sectors, all LBA FAT32 volumes have
        512-byte sectors anyway).
      * boot.asm cleaned up and modified to support Metakern
        bsDriveNumber updated by SYS even #ifndef STORE_BOOT_INFO
      * (nothing in common)
      *  SYS Now supports and includes the following new boot sectors:
        1) the combined CHS+LBA FAT12/FAT16 boot sector by Tom Ehlert(29 July)
        2) the CHS-only FAT32 boot sector -- as patched by Jon Gentle(08 July)
        3) the LBA-only FAT32 boot sector by Eric Auer and Jon Gentle (19 July)
      * The old combined (CHS+LBA), no-CALCPARAMS, no-resizable, non-Ghostable,
        non-standard FAT32 boot sector and STORE_BOOT_INFO is no longer used.
      * dump_sector() showed ASCII debug printout for the old sector
        only - fixed.
      * Put a boot sector only if sector size= 512 (may it not be so in
        Japan?!). If non-512 byte sectors encountered, report to the
        fd-kernel mailing list.
      * Now puts boot sector before copying kernel/shell so it works in
        WinNT now.
      * check_space() now implemented at last (required significant
        modifications)
      * New (FAT type) detection method according to a MS White Paper.
      * Now BOOTONLY works even without preceding boot sector image file name.
      * Some minor code cleanups.
      * Bart: some cleanups to the above; replaced 386 code for CHS FAT32
        by 8088 code. Use boot32lb.asm instead of boot32ea.asm
+ Changes Bart
    * portab.h, process.h, init-mod.h, inithma.c, kernel.asm, main.c, task.c:
      * add support for the far jmp at "int 30" (0000:00c0)
      * mirror it for the HMA (ffff:00d0)
      * put all DOS int handler (and the CPM entry jumped to from
        int30) jumpers in the "CONST" portion of DGROUP (instead of
	LGROUP)	This helps Turbo C++ 1.01 make with the -S (swap)
	switch.
      * adjustments to set the relevant PSP fields in task.c
    * blockio.c: Always use huge block sectors if the relevant bit is
      set in the device header. This solves a problem with xmsdsk.
    * chario.c: Small optimizations
    * clobber.bat: Remove duplicate clobber.
    * Flip some slashes for Linux compat and simplifications in makefiles
    * device.h, portab.h: Use STATIC=static for watcom C (statics
      are in the mapfile); remove some cruft.
    * makefile, wlinker.bat: More verbose mapfiles for watcom
      C; some slash preparations to allow cross-building on Linux
    * exeflat.c, patchobj.c: Fix warnings reported by Turbo C
    * break.c, chario.c, dosfns.c, globals.h, inthndlr.c,
      proto.h, systime.c: (with a little help from Arkady)
      Simplifications and cleanups.
      Pass a near pointer to the far pointer that points to the device
      instead of an SFT index (in general).
      Make cooked_write much faster by only testing for input every 32
      characters.  No longer test for ctl_s on syscon if writing to
      the printer: just read from the printer which will return zero
      characters.  Fix reading/writing zero characters by returning
      "256" (special code). Adjust interfaces in other files.
    * portab.h: New UNREFERENCED_PARAMETER macro that appears to
      work for all compilers.
    * floppy.asm: Remove unused code.
    * init-mod.h: Solve compilation problem with Borland C++ 3.1
    * config.b: "-p" is no longer necessary in config.bat
    * kernel.asm: Add necessary "BootHardDiskSeconds" for non
      UPXed kernels.
    * chario.c, dosfns.c: Add necessary casts to ? : constructions;
      cleanup read_line_handle a little.
    * portab.h: Add peek and poke #defines
    * chario.c: Fix pointer overflow problem for reading line using handle.
    * makefiles, exeflat.c Clean cleans a bit more; change () to (void)
    * main.c: Set the PSP before the DTA. This solves an interrupt
      vector table corruption.
    * kernel.asm: Use "local" (instead of "global") disable/enable
      A20. This solves the problems with NIOS.
    * asmsupt.asm, misc.c, proto.h, strings.c: Remove (unused) strncpy.

2003 Jul 19 - Build 2031
-------- Bart Oldeman ([e-mail])
+ Changes Luchezar Georgiev
    * (with Bart) add extra low disk buffer to avoid HMA
      problems with certain device drivers.
    * Add an extra space character at the end of the command line
      for device drivers to prevent wrong behavior at empty command line.
    * point to a correct environment for INSTALL=
      (fixes problems with xmsdsk).
    * change device driver error code check (using S_ERROR | S_DONE)
      (fixes problem with the SystemSoft PCMCIA socket services driver)
    * correct parameter order in inthndlr.c, chario.c
    * INSTALLHIGH correction.
+ Changes Tom
    * Fix a problem with the 'BootFromHarddiskIfNoKeyHit' option.
      that occurred with some Compaq and Fujitsu/Siemens highend equipment.
+ Changes Bernd Blaauw
    * config.txt updates
+ Changes Steffen Kaiser
    * NLS adjustments
+ Changes Bart
    * Correct problem with multiple UMBs (bug #1671)
    * main.c: there aren't lastdrive open file handles but a
      maximum of 20.
    * Make "unable to disable A20" message #ifdef DEBUG only.
    * config.c,main.c: Small size optimizations (some proposed by
      Arkady Belousov)
    * asmsupt.asm: Removed unnecessary jcxz's (Arkady)
    * intr.asm: intr() cleanup and small optimizations (Arkady)
    * Use PASCAL calling convention by default for Turbo compilers.
    * Move more externs to header files
    * SFT init cleanup (+3 files need to be low)
    * config.c, main.c: Fix bug in block device driver init of
      DPBs (bug #1969, TDSK problem)

2003 Jun 18 - Build 2030
-------- Bart Oldeman ([e-mail])
+ Changes Tom
    * if user left accidentally floppy or CD in drive,
      give him a chance to continue to boot from HD.
      disabled by default, enablable by SYS CONFIG
      (BOOTHARDDISKSECONDS)
+ Changes Lixing Yuan
    * dosnames.c cleanup, fix for truename if the filename
      contains wildcards and a trailing dot.
+ Changes Eric Auer
    * add sanity check to initdisk.c for (driveParam->chs.Sector == 0)
      + some display tweaks
    * add EECHO (echo with $=ESC) support to the config.sys parser.
    * distinguish between the builtin DOS version and the settable
      DOS version.
    * console.asm now accepts extended scancodes (modified by Bart, fixes