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    Don't, they don't have IDE interfaces. However,...

    Don't, they don't have IDE interfaces. However, there is some hope : http://www.chiark.greenend.org.uk/~theom/electronics/panasoniccd.html
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    I assume you have viewed both these wikipedia...

    I assume you have viewed both these wikipedia entries : http://en.wikipedia.org/wiki/Roland_MT-32 & http://en.wikipedia.org/wiki/List_of_MT-32-compatible_computer_games

    A true Roland MPU-401 or...
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    It sounds like one of the VIAs went. Fortunately...

    It sounds like one of the VIAs went. Fortunately they are socketed on a Reactive Micro board and can be replaced. Try switching them or pulling one or the other out. However, do not test with a...
  4. Depends on the developer, Sierra was very...

    Depends on the developer, Sierra was very consistent in its practices, but it used the SCI game engine for two dozen games.

    DOSBox's debugger will tell you every time a program opens a file or...
  5. Be grateful your machine uses 720KB floppies,...

    Be grateful your machine uses 720KB floppies, they are usually easier to figure out compared with 360KB floppies.

    DOSBox's debugger always alerts when programs are being open, no breakpoints...
  6. Using the nformat program, I formatted a disk...

    Using the nformat program, I formatted a disk image with a reduced number of root directory entries. The default is 112 on a 360KB DOS formatted floppy, and I set the number to 32 for the format,...
  7. Reduce it from 240 entries? I only need 16, so...

    Reduce it from 240 entries? I only need 16, so that seems sound, if DOS is not going to complain about it. What program would allow me to do it?



    I could do use that or lzexe, which is what...
  8. Actually, I looked again at the file sizes and...

    Actually, I looked again at the file sizes and there would be 355 clusters taken up on a 360KB disk, so I guess those few extra bytes were the straw that broke the camel's back (unless one of the...
  9. I have a disk image with version 1.3 of a...

    I have a disk image with version 1.3 of a particular program of the late 1980s. It was formatted in DOS 3.3, according to a peek with a hex editor. The disk image is 368,640 bytes in size, so it is...
  10. Trying to Squeeze Every Last Byte of Storage Space out of Floppy

    I am trying to copy a certain number of files to a floppy disk. A virtually identical disk, with the same files (but slightly larger total file size, 356,273 vs. 356,204 bytes), does exist on a DOS...
  11. Now it works with basic reading and writing, but...

    Now it works with basic reading and writing, but what about other common activities like formatting, partitioning and checking disk for errors as with scandisk (minus surface scan of course)?
  12. How long of a delay? The XT-IDE BIOS could be...

    How long of a delay?

    The XT-IDE BIOS could be stored in any device that has a ROM socket. In most cases, this would be an Ethernet card. As far as the on-board BIOS is concerned, as Chuck(G)...
  13. Are the registers at are at 3F6-3F7 truly...

    Are the registers at are at 3F6-3F7 truly necessary for the XT-IDE BIOS? The Alternate Status register at 3F6 Read is pretty much the same as the register at 1F7, and since only one CF drive can be...
  14. Those registers allow selection of a slave drive...

    Those registers allow selection of a slave drive and hard drive diagnostics, so I suppose they are not truly necessary. Pin 38 is /CS2, and as it is grounded on an XTA pin header, a hole should be...
  15. The issue of Address line 2 is not as weighty as...

    The issue of Address line 2 is not as weighty as it may seem. According to the IBM Model 25 Tech Reference, A2 is provided on the 44-pin connector. That may be an error, which if so can be easily...
  16. Oh, there is also the issue of 3F7, the Digital...

    Oh, there is also the issue of 3F7, the Digital Input Register, which I believe the existing interfaces on the Tandy and PS/1 & PS/2s do not provide.
  17. The Universal XT IDE BIOS, as I understand it,...

    The Universal XT IDE BIOS, as I understand it, provides an AT-style Int 13 for hard drives. The AT IDE ports are at 1F0-1F7 for the primary, 170-177 for secondary, 1E8-1EF for tertiary and 168-16F...
  18. I can see someone buying these and turning around...

    I can see someone buying these and turning around to sell them for five times the price paid X( However, when the market dries out, there can be an alternative solution that is cheaper than XT-IDE. ...
  19. To avoid using a slot, but since you are going to...

    To avoid using a slot, but since you are going to need a BIOS extension anyway, you must take up a slot since none of these machines have one spare socket, nevermind two (all these systems are 16-bit...
  20. IBM's implementation uses A2 in addition to A0...

    IBM's implementation uses A2 in addition to A0 and A1. In the pure implementation, used in the Tandys, A2 is not used. So you would need to wire A2 to pin 36 on the header. There are harder hacks....
  21. Interestingly, I have a scan of the IBM PS/2...

    Interestingly, I have a scan of the IBM PS/2 Model 25's Technical Reference and the information about the hard drive interface is extremely sketchy. Scott Mueller identifies these systems as...
  22. Compact Flash with true 8-bit XT IDE Interface

    You can find the original 8-bit IDE interface in a Tandy 1000 TL/2, TL/3, RL, RLX in one form and in the IBM PS/2 Model 25 & 30 (including the 286s for some bizarre reason) in another form. It uses...
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    Tandy 1000RL

    Some questions about this fascinating little system :

    Can a 360KB drive work properly via a connection to the internal floppy controller? While it will not fit inside the system and will almost...
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    While that may improve the audio quality, that...

    While that may improve the audio quality, that would distance the card more from that "classic" Adlib sound.
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    While I could not swear that the resistor values...

    While I could not swear that the resistor values are exactly the same in the 1987 and 1990 boards, the latter has two more decoupling capacitors than the former. http://www.wavetable.nl/?p=62
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