Re: [MSX] Dir as Disk in blueMSX 1.7.0
Still.. It would be nice to see something like the CJS Emulator disk-access, even it was only optional :) This way you can also choose to run a normal MSX system without these options. And, how about a virtual HD drive? A big file like a .DSK image, but then a .HDD image? And maybe another crazy idea: How about using your PC's cardreader (for CF/SD/Memorystick/etc) for the MSX Emulator, so you can access it just like the Sunrise CF-interface? OK, ok.. maybe this is a bit too much, but still :) :) ___ MSX mailing list ([EMAIL PROTECTED]) Info page: http://lists.stack.nl/mailman/listinfo/msx
Re: [MSX] Dir as Disk in blueMSX 1.7.0
That's exact but I've forgotten that because that's the only MSX
emulator that you must absolutely use under DOS (not a DOS-box in Windows) !
Some excepts from the CJS manual :
" High and low level disk I/O
ÄÄÄ
There are two modes of disk operation: high level and low level:
þ High level disk I/O
Offers support for EVERY disk related device MS-DOS supports
(through interrupt 021h) including hard disks, high density floppy
drives, CD-ROM drives, network drives, SCSI drives, etc.
These routines don't know anything about sectors and tracks. They
work on the file-level: opening a file, reading it, etc. This is
much more flexible but it has one disadventage: there are some MSX
disk formats not supported by MS-DOS. When trying to e.g. open a
file the lower level routines in MS-DOS try to read sectors and
fail. Hence the second operation mode:
þ Low-level disk I/O
Simply provides the MSX disk system with routines for reading and
writing sectors, formatting a disk, etc. Since the MSX disk system
(MSX-DOS 1.0) is somewhat limited and has no support for e.g. hard
drives you won't be able to use them in low level mode. But it is
now possible to use disks that MS-DOS doesn't support since we
handle sector I/O ourselves. One example of a not supported format
are the 3.5" single sided (media ID: F8) 360Kb disks.
The emulator defaults to high level disk I/O when it starts but you
can change that by using the /D command line switch or the _LOW and
_HIGH MSX BASIC commands.
Note that directory names can't be used in MSX-DISKBASIC. Instead use
the extra _CD/_MD/_RD MSX emulator BASIC commands"
"
" MSX EMULATOR SPECIFIC BASIC COMMANDS
Ä
The MSX emulator has some extra BASIC commands that can be used by
typing CALL (or the underscore: _) and the command. If commands have a
parameter then using variables is allowed too. E.g.
A$="\MSX\GAMES"
_CHDIR(A$)
þ _LOW
Set low level disk I/O mode (see "DISK EMULATION")
þ _HIGH
Set high level disk I/O mode (see "DISK EMULATION")
þ _DRIVE("d:") or _CHDRV("d:")
Changes the default drive to d:
Example: _DRIVE("B:")
þ _CD("directory") or _CHDIR("directory")
Changes the current directory to "directory"
Examples: _CD("\MSX\PROGS")
_CD("..")
þ _MD("directory") or _MKDIR("directory")
Creates a subdirectory "directory"
Example: _MD("\PROGS")
þ _RD("directory") or _RMDIR("directory")
Removes a subdirectory "directory"
Example: _RD("\PROGS")
Note that directory names can't be used in MSX-DISKBASIC. E.g.
LOAD "\MSX\APPS\MYPROG.BAS"
is _NOT_ allowed. Instead use the extra _CD/_MD/_RD MSX emulator BASIC
commands. The _CD, _MD and _RD commands can only be used in high level
disk I/O mode.
MSX EMULATOR SPECIFIC MSX-DOS COMMANDS
Ä
Besides the directory related MSX BASIC commands we've implemented a
trick to be able to change, create and remove directories in MSX-DOS
(even in MSX-DOS 1).
There are three extra MSX-DOS 'commands' available:
þ CD
Changes the current directory to
Examples: CD \MSX\PROGS
CD ..
þ MD
Creates a subdirectory
Example: MD PROGS
þ RD
Removes a subdirectory
Example: RD PROGS
NB: These commands can only be used in high level disk I/O mode.
It works like this: when you type a command in MSX-DOS it'll search
for it by using a system call "FINDFIRST". We let it do it's job and
if it returns with an error we check if the command was CD, MD or RD.
If so we execute that command. But the FINDFIRST still returns an
error (otherwise MSX-DOS thinks there really is e.g. a CD.???). That's
why the commands all return with a 'Bad command or filename' even if
the command was completed successfully."
- Original Message -
From: "TFH|Fony" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, September 21, 2004 11:42 PM
Subject: Re: [MSX] Dir as Disk in blueMSX 1.7.0
> >>Actually, BRMSX-DOS was the first emulator with this feature.
> >
> > Actually, Compujunk
Re: [MSX] Dir as Disk in blueMSX 1.7.0
Patriek Lesparre wrote: Actually, BRMSX-DOS was the first emulator with this feature. Actually, Compujunks' (CJS) MSX emulator was the first emulator with this feature. The feature in CJS was not the same. In CJS, the bios was patched, and call to bios routines were replaced by internal emulator routines. Using this feature, you couldn't, for instance, read sector 5 of the disk and search for the filenames. The feature in brmsx and bluemsx just read some files and create a virtual dsk. In this model, you can read sector 5 and see the filenames. CJS model is more useful I think, but some programs will not work with this. Ricardo Bittencourt http://www.mundobizarro.tk [EMAIL PROTECTED] "kimitatino kitiwa subete CATS ga itadaita" -- União contra o forward - crie suas proprias piadas -- ___ MSX mailing list ([EMAIL PROTECTED]) Info page: http://lists.stack.nl/mailman/listinfo/msx
Re: [MSX] Dir as Disk in blueMSX 1.7.0
Actually, BRMSX-DOS was the first emulator with this feature. Actually, Compujunks' (CJS) MSX emulator was the first emulator with this feature. Indeed... and if I remember correctly... that one wasn't limited by MSX-DOS limitations. You also had to use speciall call commands to use it. ___ MSX mailing list ([EMAIL PROTECTED]) Info page: http://lists.stack.nl/mailman/listinfo/msx
Re: [MSX] Dir as Disk in blueMSX 1.7.0
mars2000you wrote: The "Dir as Dsk" feature has been implemented in blueMSX 1.7.0 on special request of Ricardo Bittencourt that has gently shared with the blueMSX team his BRMSX-Windows source code for this feature. Actually, BRMSX-DOS was the first emulator with this feature. Actually, Compujunks' (CJS) MSX emulator was the first emulator with this feature. Greetz, Patriek ___ MSX mailing list ([EMAIL PROTECTED]) Info page: http://lists.stack.nl/mailman/listinfo/msx
Re: [MSX] Dir as Disk in blueMSX 1.7.0
Benoît Delvaux wrote: The "Dir as Dsk" feature has been implemented in blueMSX 1.7.0 on special request of Ricardo Bittencourt that has gently shared with the blueMSX team his BRMSX-Windows source code for this feature. Actually, BRMSX-DOS was the first emulator with this feature. BrMSX, in turn, used source from dsktool, an earlier open source tool written by me. It should be available on the web, if you can't find it, just mail me and I'll send to you. Dsktool is much a like a "msx-tar", so please take a look on it. Ricardo Bittencourt http://www.mundobizarro.tk [EMAIL PROTECTED] "kimitatino kitiwa subete CATS ga itadaita" -- União contra o forward - crie suas proprias piadas -- ___ MSX mailing list ([EMAIL PROTECTED]) Info page: http://lists.stack.nl/mailman/listinfo/msx
Re: [MSX] Dir as Disk in blueMSX 1.7.0
Hello ! The "Dir as Dsk" feature has been implemented in blueMSX 1.7.0 on special request of Ricardo Bittencourt that has gently shared with the blueMSX team his BRMSX-Windows source code for this feature. Actually, BRMSX-DOS was the first emulator with this feature. We have insert an "Insert Directory" in the File/Drive A and File/Drive B menus. Here's the explanations from the manual : "Insert Directory Allows to insert a Windows directory as Disk in drive A or drive B. This directory must contain files of a MSX game. The emulator will build with these files a virtual disk image (including a normal MSX boot sector) and run this virtual disk image. If you have inserted the directory in drive A and come only to MSX-BASIC, it means that there is no "AUTOEXEC.BAS" file. Search for the loader file and use the following command : RUN"GAME.LDR" (if the loader file is "GAME.LDR") and press on RETURN (the ENTER key of your PC) . This is the Dir as Dsk feature, that works only in reading mode for security reasons : you can make changes on the virtual disk image, but these changes are not transferred to the Windows source directory. This feature has also specific MSX limitations : no more than 112 files in a directory and you can't exceed a total size of 720 Kb (including the boot sector that will be added automatically on the virtual disk image). It can't work with MSX subdirectories and with special boot sectors." I think that it works exactly like the same feature in openMSX. Benoît - Original Message - From: "David Heremans" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, September 21, 2004 9:53 PM Subject: [MSX] Dir as Disk in blueMSX 1.7.0 > Hello, > > I have a question :-) > Since I don't run Windows I'm currently not testing blueMSX > but the latest release seems to have a dir-as-disk feature. > This sounds like something I've implement in openMSX :-) > Does the blueMSx takes a different approach to it then I did in openMSX, > or are they rather simular? > > If there is any considerable difference, could the author please contact > me ? I've split off my disk constructing code in msxtar, an openMSX > subproject, but I would gladly exchange some ideas about on-the-fly disk > emulation, and I would like to know blueMSX's dev stance on this > subject. > > rgds, > > David Heremans > > > -- > openMSX - the open source MSX emulator that aims for perfection > http://openmsx.sf.net/ > ___ > MSX mailing list ([EMAIL PROTECTED]) > Info page: http://lists.stack.nl/mailman/listinfo/msx ___ MSX mailing list ([EMAIL PROTECTED]) Info page: http://lists.stack.nl/mailman/listinfo/msx
[MSX] Dir as Disk in blueMSX 1.7.0
Hello, I have a question :-) Since I don't run Windows I'm currently not testing blueMSX but the latest release seems to have a dir-as-disk feature. This sounds like something I've implement in openMSX :-) Does the blueMSx takes a different approach to it then I did in openMSX, or are they rather simular? If there is any considerable difference, could the author please contact me ? I've split off my disk constructing code in msxtar, an openMSX subproject, but I would gladly exchange some ideas about on-the-fly disk emulation, and I would like to know blueMSX's dev stance on this subject. rgds, David Heremans -- openMSX - the open source MSX emulator that aims for perfection http://openmsx.sf.net/ ___ MSX mailing list ([EMAIL PROTECTED]) Info page: http://lists.stack.nl/mailman/listinfo/msx
