Slot Floppies Patch
The HDD to 120GB, it will take 128 without partitioning schemes, though apparently there is a patch available that will allow it to accept 'big' drives (more on that later.) And I found a Nvidia Geoforce3 MX 64 GB graphics card to replace the stock 16mb unit. Patch 1.5.11 Hotfix 1. A hybrid of CPU and GPU. Limited for the costs, but essentially opens up a card slot. Floppies and hard drives can no. Our high quality Sloth Patches are professionally printed and perfect to sew onto backpacks, jackets and more to give them some unique personality.
Get the best deals on Floppy Disk Games and expand your gaming library with the largest online selection at eBay.com. Fast & Free shipping on many items! Danny Patrol Patch - 2' Diameter Round Embroidered Patch (Sew-on) Sloth Iron On Embroidered Patch Iron on/Sew On Patch Applique Sleepy Sloth with Pillow Hug Cute Kawaii Lazy Days Chill Serene Peaceful Animal Cartoon Embroidered Design (Medium (3.8' Wide x 5' Tall)).
The PowerBook 165 was a grayscale version of the PowerBook 165c with a 4-bit, 16-shade passive matrix display.
The PB 165 has a 14 MB memory ceiling, although you can go beyond that by using Virtual Memory (slow and free) or RAM Doubler (faster, not free, and discontinued). Another option is RAM Charger 8.1, which offers better memory management than the Mac OS.
As with all early PowerBooks, when buying one be sure it has all the memory you need – new PB RAM is difficult to locate, especially at reasonable prices.
- Got a PowerBook? Join our PowerBooks Group.
Details
- Code name: Dart LC
- introduced 1993.08.16 at $1,970; discontinued 1994.07.18
- requires System 7.1 (with System Enabler 131) to 7.6.1, supports Mac OS 8.1 with Born Again
- CPU: 33 MHz 68030
- FPU: none
- ROM: 1 MB
- RAM: 4 MB, expandable to 14 MB using a special 85ns pseudostatic RAM card
- display: 9.8″ 4-bit 640 x 400 77 ppi passive matrix
- video: 512 KB VRAM, VID-14 port, supports 8-bit external video at 512 x 384, 640 x 400, 640 x 480, 800 x 600, and 832 x 624 with video adapter
- ADB ports: 1 port for keyboard and mouse
- serial ports: 2 DIN-8 RS-422 ports on back of computer
- SCSI ports: HDI30 connector on back of computer
- Hard drive: 80 or 160 MB
- proprietary modem slot
- Gestalt ID: 84
- Size (HxWxD): 2.25″ x 11.25″ x 9.3″
- Weight: 6.8 pounds
- power supply: M5651 – 19W, 2 amps
Online Resources
- . Best online prices for System 6, 7.1, 7.5.x, Mac OS 7.6, 8.0, 8.1, 8.5, 9.0, 9.2.2, and other versions.
- PowerBook 180 reincarnated, Leo Titus LeBron V, Collection Spotlight, 2009.09.01. The dead PB 180 had once been king of the PowerBook line. Thanks to a PowerBook 165 and some part swaps, it was brought back to life.
- Mac ‘Book Power Management Adventures, Charles W Moore, ‘Book Value, 2009.05.19. If your ‘Book won’t power up, shuts down while your working, or has other power issues, resetting its internal power manager may clear things up.
- Why You Should Partition Your Mac’s Hard Drive, Dan Knight, Mac Musings, 2008.12.11. “At the very least, it makes sense to have a second partition with a bootable version of the Mac OS, so if you have problems with your work partition, you can boot from the ’emergency’ partition to run Disk Utility and other diagnostics.”
- Creating Classic Mac Boot Floppies in OS X, Paul Brierley, The ‘Book Beat, 2008.08.07. Yes, it is possible to create a boot floppy for the Classic Mac OS using an OS X Mac that doesn’t have Classic. Here’s how.
- The Compressed Air Keyboard Repair, Charles W Moore, Miscellaneous Ramblings, 2008.07.24. If your keyboard isn’t working as well as it once did, blasting under the keys with compressed air may be the cure.
- A Vintage Mac Network Can Be as Useful as a Modern One, Carl Nygren, My Turn, 2008.04.08. Old Macs can exchange data and share an Internet connection very nicely using Apple’s old LocalTalk networking.
- Vintage Mac Networking and File Exchange, Adam Rosen, Adam’s Apple, 2007.12.19. How to network vintage Macs with modern Macs and tips on exchanging files using floppies, Zip disks, and other media.
- Better Classic emulation, Leopard on any G3?, CardBus and Compact Flash, and more, Dan Knight, Low End Mac Mailbag, 2007.12.18. Also where to find even older versions of BBEdit Lite, more oddball Mac video connections, installing System 7 on a PowerBook with no install disks, and lockups when faking out the Leopard installer.
- Solving Mac Startup Problems, Adam Rosen, Adam’s Apple, 2007.12.12. When your old Mac won’t boot, the most likely culprits are a dead PRAM battery or a failed (or failing) hard drive.
- Better and Safer Surfing with Internet Explorer and the Classic Mac OS, Max Wallgren, Mac Daniel, 2007.11.06. Tips on which browsers work best with different Mac OS versions plus extra software to clean cookies and caches, detect viruses, handle downloads, etc.
- Hacking Mac OS 7.6.1 so many Mac OS 8 apps will run, Max Wallgren, Mac Daniel, 2007.10.30. With a little ResEdit work and a second copy of your System Folder, you can run a lot of OS 8 apps with Mac OS 7.6.1.
- Simple Macs for Simple Tasks, Tommy Thomas, Welcome to Macintosh, 2007.10.19. Long live 680×0 Macs and the classic Mac OS. For simple tasks such as writing, they can provide a great, low distraction environment.
- Mac System 7.5.5 Can Do Anything Mac OS 7.6.1 Can, Tyler Sable, Classic Restorations, 2007.06.04. Yes, it is possible to run Internet Explorer 5.1.7 and SoundJam with System 7.5.5. You just need to have all the updates – and make one modification for SoundJam.
- Appearance Manager Allows Internet Explorer 5.1.7 to Work with Mac OS 7.6.1, Max Wallgren, Mac Daniel, 2007.05.23. Want a fairly modern browser with an old, fast operating system? Mac OS 7.6.1 plus the Appearance Manager and Internet Explorer may be just what you want.
- Format Any Drive for Older Macs with Patched Apple Tools, Tyler Sable, Classic Restorations, 2007.04.25. Apple HD SC Setup and Drive Setup only work with Apple branded hard drives – until you apply the patches linked to this article.
- Making floppies and CDs for older Macs using modern Macs, Windows, and Linux PCs, Tyler Sable, Classic Restorations, 2007.03.15. Older Macs use HFS floppies and CDs. Here are the free resources you’ll need to write floppies or CDs for vintage Macs using your modern computer.
- Getting notebook design ‘just right’, Andrew J Fishkin, The Mobile Mac, 2006.12.05. Some notebooks have just the right mix of design, quality, and features, while others fall short in one or more categories.
- System 7 Today, advocates of Apple’s ‘orphan’ Mac OS 7.6.1, Tommy Thomas, Welcome to Macintosh, 2006.10.26. Why Mac OS 7.6.1 is far better for 68040 and PowerPC Macs than System 7.5.x.
- 30 days of old school computing: No real hardships, Ted Hodges, Vintage Mac Living, 2006.10.11. These old black-and-white Macs are just fine for messaging, word processing, spreadsheets, scheduling, contact management, and browsing the Web.
- 30 days of old school computing: Increasing battery life with a RAM disk, Ted Hodges, Vintage Mac Living, 2006.09.14. When using the hard drive, the old battery ran out of juice within 30 minutes, but running from a RAM disk it still has a 50% charge after half an hour.
- 30 days of old school computing: Computing at work with a PowerBook 170, Ted Hodges, Vintage Mac Living, 2006.09.08. This vintage Mac laptop’s battery still holds a charge, and it’s a competent performer for browsing the Web, email, writing, and instant messaging.
- Mac OS 8 and 8.1: Maximum Size, Maximum Convenience, Tyler Sable, Classic Restorations, 2006.09.11. Mac OS 8 and 8.1 add some useful new features and tools, and it can even be practical on 68030-based Macs.
- Inside your notebook’s battery: Ordinary AA Li-Ion cells, Dan Knight, Mac Musings, 2006.09.08. That expensive battery in your notebook computer probably holds less than $30 worth of off-the-shelf AA Li-Ion batteries.
- Compact Flash with SCSI Macs, PB 1400 CD-RW upgrade problems, and Web incompatibilities, Dan Knight, Low End Mac Mailbag, 2006.06.16. Suggested ways to use Compact Flash with vintage Macs and PowerBooks, problems getting CD-RW to work with a PowerBook 1400, and more thoughts on website incompatibilities.
- Moving files from your new Mac to your vintage Mac, Paul Brierley, The ‘Book Beat, 2006.06.13. Old Macs use floppies; new ones don’t. Old Macs use AppleTalk; Tiger doesn’t support it. New Macs can burn CDs, but old CD drives can’t always read CD-R. So how do you move the files?
- System 7.6.1 is perfect for many older Macs, John Martorana, That Old Mac Magic, 2006.03.24. Want the best speed from your old Mac? System 7.6.1 can give you that with a fairly small memory footprint – also helpful on older Macs.
- System 7.5 and Mac OS 7.6: The beginning and end of an era, Tyler Sable, Classic Restorations, 2006.02.15. System 7.5 and Mac OS 7.6 introduced many new features and greater modernity while staying within reach of most early Macintosh models.
- Web browser tips for the classic Mac OS, Nathan Thompson, Embracing Obsolescence, 2006.01.03. Tips on getting the most out of WaMCom, Mozilla, Internet Explorer, iCab, Opera, and WannaBe using the classic Mac OS.
- Which system software is best for my vintage Mac?, Tyler Sable, Classic Restorations, 2005.11.22. Which system software works best depends to a great extent on just which Mac you have and how much RAM is installed.
- Why you should use Mac OS 7.6 to get the most out of vintage Macs, Thomas Ahart, The Productive Mac, 2005.12.12. Although you may be able to run OS 8 or 9 on your old Mac, you’ll generally find better performance using Mac OS 7.6.
- SCSI and FireWire Disk Modes, Paulo Rodrigues, Tangerine Fusion, 2000.11.29. How to use SCSI Disk Mode and FireWire Target Disk Mode for ultrafast file transfers.
- Run Mac OS 8.1 on your ‘030 Mac, Charles W Moore, Applelinks, 2000.08.08. “Born Again enables certain 68030 Macs to support Mac OS 8.1.”
- PowerBook history, Adam Robert Guha, Apple Archive, 2000.05.12. A history of portable Macs from 1989 through 1996.
- Games for ‘030s, Brian Rumsey, Low End Mac Gaming, 2000.05.26. A look at games that run nicely on the old 68030-based Macs.
- Recovering a stolen PowerBook, The ‘Book Page. One user’s experience.
- Faster browsing on older Macs, Mac Online Tech Journal
- Feel The Wrath of My PowerBook, Knave!, Philip Michaels, Macworld, 2000.09.12. “For six years, the PowerBook 165 served me well.”
- My PowerBook 165, Ernst J. Oud. “Having been a product manager portable computing with Toshiba, the PB 165 really made me realise how bad PC compatible notebooks are.”
- Email lists: PowerBooks, Classic Macs Digest, Vintage Macs
- Apple TIL 14133: PowerBook 14x/16x/170/180 Q&A
- PowerBook 165 Technical Specifications, Apple Knowledge Base Archive
Cautions
- Apple Computer considers this computer obsolete as of 2001.07.16 in the United States and 2001.07.23 in Canada. As of that date, service parts and documentation are longer be available from Apple.
- The 100-series and 500-series PowerBooks do not provide SCSI termination power, depending on external SCSI devices to provide it. For more details, see SCSI Termination Power.
- Serial port limited to 57.6 kbps; throughput using a 56k modem may be limited. See 56k modem page.
Keyword: #powerbook165
Short link: http://goo.gl/8di2Xi
searchword: powerbook165
So, openMSX is NOT a MSX emulator, but openMSX is a collection of 150 emulators.
It has a Philips nms 8250 emulator and a Sony HB-75 emulator, etc, etc.
OpenMSX is amazing, isn't it
You're clearly very passionate about this subject, which is alright. I used to use RuMSX some decades ago and liked it. I also liked BrMSX, NLMSX and ParaMSX back in the days. Then came BlueMSX and OpenMSX. Today, I mostly use OpenMSX and WebMSX, because they fully suit my needs. But: I still use the diskmanager tool made by RuMSX's author.
openMSX emulates beyond the standard. As I wrote at the top, it emulates specific MSX machines. There are many differences between machines that are not in the standard. They matter. They determine whether MSX software actually runs correctly on machine A and not on machine B, although both are of the same standard.
Note that there are a few generic MSX machines that come with openMSX, which are not modeled after a real MSX model. This is more like what you get by default on RuMSX.
So, openMSX is NOT a MSX emulator, but openMSX is a collection of 150 emulators.
It has a Philips nms 8250 emulator and a Sony HB-75 emulator, etc, etc.
Indeed! And all these emulated machines behave a lot like the real corresponding machines. Even if the real machine is not entirely according to the standard or has other special features or quirks.
But as I wrote, we also included a few generic fantasy machines that are still according to the MSX standard. This is more like what RuMSX does by default.
With openMSX you can even create your own MSX machines. The same is also possible with blueMSX and RuMSX.
The reason that you get C-BIOS MSX2+ by default in openMSX, is because of legal reasons. We, as openMSX team, are not allowed to distributed the ROM files that are inside MSX machines, because we do not own the copyright and we did not get permission from Microsoft. Apparently the author of RuMSX did get permission, or (more likely) he doesn't care.
There are many MSX emulators besides RuMSX that have MSX system ROM to start with.
Now that you mention it, openMSX is the only one that I know that hasn't But I know only a dozen.
And none of them got permission for that, as far as I know. That means it's illegal. openMSX is not only for Windows, but it's also included in several Linux distributions for example. These are quite strict regarding including binary code without sources. C-BIOS comes with source code included and allows everyone to use it freely. That's why it's the only system ROM included with openMSX. On all platforms openMSX runs on.
That's why it's the only system ROM included with openMSX. On all platforms openMSX runs on.
And it doesn't correspond to openmsx or other emulators to include them, but to preservation platforms such as archive.org and others.
It's a pity we don't always have the source code of the ROMs, but I don't think that companies would refuse to give permission to preserve the binarie for this purposes. I guess the problem is that when asking their layers about something that requires legal work, by default the answer will be' no' (=better safe than sorry!)
A original MSX game is made according to the MSX standard. A standard is there so that a developer does not have to make 150 different versions. But only ONE. If it is according the standard, you need only ONE machine to test it on.
If a game only works on one specific machine, it is junk.
This is clearly not true. Most of the examples mentioned on https://www.msx.org/wiki/MSX_compatibility_problems are a consequence of this. A lot of the English developers during the MSX1 period ported spectrum games to MSX and tested on one or more machines that they had access to. None of those had expanded slot 0 configs, so if you have a machine that does this you're screwed.
An other example: the standard doesn't say anything about the stack location so they looked at the value of the machines they had available and assumed this would be the case on all other machines. Later machines like most MSX2 machines had diskdrives so a part of the memory was now being used for disk routines. This of course causes those softwares to fail.
If it is made for MSX1, it works on every MSX1 machine and all above.
Again, this is not true. Zaxxon for instance would have worked on all MSX1 machines that were produced when the game came out. Programmed according to the standard and following all the documentation for the TMS9xxx chip. Nobody could predict the extra registers in the VDP on MSX2, so while perfectly working on all MSX1's it will not work on MSX2 unless you patch the code.
A developer makes only one version. Test it on one and it's okay. Sometimes there was a little misstake, but with one poke in the menu it works for all MSX computers and not for only the Philips NMS 8245
No, Brain will not work on non japanese machines due to differences in the charset. Mind you, differences allowed by the standard!
So while brain is created by ASCII, the inventors of the standard nonetheless, it is even plagued by this. Being a japanese company they probably only tested it on a dozen or so japanese machines.
The original Japanese cartridge version of metal gear is even hardcoded to only work on Japanese machines, no amount of poking in a menu will fix this.
And therefore it is nice that some emulators allow you to pick a specific machine if you want to run some of this oddly behaving programs.
There are not 150 standards and games are not made in 150 different flavors
You are wrong. Even 150 is insufficient. All these machines at hand is a godsend for developers and for the nostalgic. It also helps determine what minimum configuration is needed to run a game without manual, see how our game behaves on a foreign MSX (Arabic, Korean, etc). And there are still plenty of reasons ...
Some rom and dsk files are enhanced versions of the real thing and that is why they don not work on a real MSX
That are games for a non excisting msx 4
Sometimes roms and dsk files are altered to work on a particular version emulator and that is the reason they do not work on a real MSX. Not the rom and dsk should have been latered, the emulator is wrong.
With the right loader and or menu program it does not matter Sony or Philips... it will work
There are plenty dsk and rom files free on the internet. If it doesn't work on the real thing, delete it.
Give a temporary link to an example so I can check if you're telling the truth.
I have never seen this. I only saw the opposite once, a game that has been modified not to run on the emulators. This is possible on fmsx (and fmsx based emulators) because the developer had the bad idea to add instructions to the Z80 to perform special functions.
A original MSX game is made according to the MSX standard.
You don't seem to know it, but between theory and practice there are often differences and sometimes very big differences. We don't live in a perfect world!
This is an interesting discussion and collection of opinions ;-)
So I'll explain some things and add some more stuff.
BTW: I'm the developer of RuMSX and Disk-Manager.
Since early MSX times I prefered clean MSX software, that can be executed on every MSX-Computer (as far as possible). Pokes for different memory-layouts, MSX1-Software that did not even run on MSX2-Machines. ... I've seen all. And I'm still a fan of Software which runs on real MSX-Computers as well as Emulations. Which does not mean that emulations can't be extended to add more features ;-)
The openMSX Debug-Interface and RuMSX Host-Interface are some examples for this.
About floppy-support:
I'll try to keep Disk-Manager and RuMSX in sync. with available features (such as support for additional disk-formats). Due to different release-cycles differences are possible. Anyway: RuMSX supports floppy-drives just for convenience. Disk-Manager plays the lead-role in this area. This is because physical floppy drives are a rarity and Floppies are loosing quality over years, Disk-archives are a requirement.
BTW: Disk-Manager v0.17 fixes an issue, which may have caused copies of 360KB disks being incorrect. To be exact: irreversibly corrupted. The error was caused by the Windows interpretation of Single-Sided disks and can therefore now be configured (Default: fix active).
About ROM-licenses:
I agree that openMSX should not deliver real ROM-images due to legal reasons. But: similar to other common emulations pre-built configurations can be published separately by any author ;-)
For RuMSX I've chosen a different way: I've contacted Microsoft as well as ASCII - and I've got no response from any of these companies. Some time later Microsoft re-used the abbrevation MSX for 'MicroSoft eXchange'. Some time later the MSX Licensing Corporation appeared on stage - and disappeared in meantime. As long as no-one of these companies is caring I'll deliver the ROMs with RuMSX.
Note: as far as I know Texas Instruments is the only manufacturer, which requests license fees for I'ts TI-99/4A ROMs and forces the removal of illegally spread copies.
About openMSX usage:
For common users (in my opinion) even Catapult (coded in Python instead of C/C++) can be extended to be more convenient. Especially accepting command-line parameters for Disk-, ROM- and Tape-images (maybe CD-ROM and HardDisk-images too) would be very helpful. I'm thinking about this for a longer time (because I'm working on a project, which is intended to support multiple emulations, not even MSX). I've tried to create a tiny wrapper around catapult, to add this feature. Unfortunately this wrapper behaves differently in different versions of Catapult. Sometimes working, sometimes error. Very strange. However: maybe one of the responsible developers may add parameter-support. So Catapult e.g. can be associated with file-extensions - or called from other tools. From my point of view this would be a great improvement.
Hello everyone,
please could someone give me an advise of an External USB PC Floppy Disk Drive for MSX Disks.
I don't want to buy several Drives who don't work with MSX Disk's.
Links would be helpfull.
@Thom
Slot Floppies Patchett
OpenMSX is amazing, isn't it Smile
You're clearly very passionate about this subject, which is alright. I used to use RuMSX some decades ago and liked it. I also liked BrMSX, NLMSX and ParaMSX back in the days. Then came BlueMSX and OpenMSX. Today, I mostly use OpenMSX and WebMSX, because they fully suit my needs. But: I still use the diskmanager tool made by RuMSX's author.
With RuMSX you do not need Diskmanager or any other tool.
RuMSX can make empty dsk files, format floppies, etc.
@Manuel
I want that ordinary people and even children can use a MSX emulator just like they can use a MSX.
A MSX emulator must be able to make that possible.
A ten year old can start many games on the MSX but also on a pc with RuMSX.
That is hardly ever possible with openMSX.
I think MSX is about diskettes, that was the only way we could in the eighties.
One diskette after another in the drive, searching or just playing a game for a short time.
Yes, it can be done with blueMSX, but between disks there is a long time.
I am trying to distribute and maintain MSX, but difficult emulators can't.
Usually to children or to ordinary people with little knowledge of computers.
The question is not whether I can play a game with openMSX, but can an ordinary person or a child?
With RuMSX this is even possible on a PC with floppy disks. Just like in the eighties.
In order to use MSX, one should not have to worry and learn about the type of computer they work on.
Just turn on and play. Just like on a real MSX
openMSX for windows?
In windows you click on a icon and it starts, that is with openMSX not the case.
Not with dsk files and not with rom files.
That is not windows, it is still only for linux / unix
openMSX has no System Roms, because it is illegal.
But it is made to use illegal ROM's and dsk of games.
Without illegal software there is no use for openMSX Why not use that roms too
@turbor
The link you mention, does not say that there are 150 different standards only a few differences between some machines.
There are only a few differences between some machines and with the right poke or peek in the menu or loader a dsk file or a diskette will work on almost all machines.
Not just on one machine of the 150
If a game designer had to work for that many flavors, there would be no games.
The exception confirms the rule.
One game, zaxxon, brain or a few more does not change the rule that a game is not made for many different machines and only for ONE standard in ONE Flavor.
Almost ALL msx1 games work very nice on almost every MSX2 machine, that is a fact!
Sometimes you need a good menu or loader to make them work on almost all.
The exception confirms the rule.
@gdx
You are wrong. Even 150 is insufficient.?
A game is made for only ONE standard and does not come in 150 flavors or even more.
Did you ever see a game in 150 flavors for 150 different MSX machines?
Yes, that is stupid, there is only one for sale.
Or sometime two or thee or four... MSX1, MSX2, MSX2, TurboR
But most of the time... ONE!!!
A original MSX game is made according to the MSX standard.
A few bad games don't make that rule untrue and they work on almost ALL machines not just for one out off 150
@Lex Lechz
This is because physical floppy drives are a rarity and Floppies are loosing quality over years.
For older people like me is MSX the same as working with physical floppies.
One after another in the drive... that is MSX for a lot older people.
On a pc clicking on one game after another is not the same as having a bin with physical floppies.
I bought a lot of floppy disks with junk on them and put usable games on them.
So I have quadrupled my stock and I sell them for a small amount or give them away.
I'm going to copy more and save more floppies from the trash.
MSX computer are too expensive in the Netherlands and they can play them on a cheap old pc with diskdrive.
There are plenty old pc's and diskdrives to get for a little amount of money... with RuMSX for free.
After installing openMSX, clicking on the icon should start openMSX. .
Nothing happens for the normal user of windows.
After installing openMSX, clicking on a dsk or rom file should be enough to start a game.
this is quite normal for Windows users.
I work for ordinary citizens and children who do not understand difficult configurations and codes that are strange to them.
A simple batch file is acrabadabra for them.
MSX is known as a simple system with an easy MSX basic language.
I am against throwing away floppies and trying to save as many of them as possible.
For me and many others, clicking files to play a game is very different from putting one floppy disk after another in the drive.
I don't see how kids in my family, siblings are going to use Catapult.
I explained RuMSX to them in a few minutes.
I do not want to think that MSX is only available for specialists with special knowledge and skills.
Or for oldies from the eighties. But also for ordinary people and children.
I save old pc's with floppiedrives and floppies and perhaps MSX for children and common people.
I started this topic because I feel that openMSX and blueMSX receive excessive attention and RuMSX hardly ever.
Maybe because so many are so fond of linux / unix
I like MSX and I don't like linux and unix, so I don't like openMSX
People that I want to help using MSX do not make batch files or learn code before they can use MSX
RuMSX deserves much more attention
Many questions have complicated answers, but with RuMSX it can be done in a simple way as standard.
As I show in a number of videos on youtube,
A little less attention to openMSX and more attention to blueMSX and especially RuMSX
With RuMSX you can use diskettes as if you were working on an MSX ... see my video on youtube
Using real MSX diskettes on a PC with RuMSX