Jack, >>> The "issue" is that VirtualBox is not posting diskette media-change >>> status in the BIOS data table. >> >> the 'issue' is that VirtualBox clearly states >> 'floppy without change-line support' >> >> int13/15 returns '01h floppy without change-line support >> int13/16 returns '06h change line active or not supported >> >> but UIDE ignores this, and relies on change line support anyway.
> You are WRONG, Tom!! > UIDE has NEVER ignored if a diskette has change-line support! It > does in fact check the BIOS data table at 0:448h for bit 0 (change > line for diskette A:) or bit 4 (change line for diskette B:). If > those bits are off, diskette A: or diskette B: will not be cached. if UIDE would check INT13/15 if change line is supported, and not cache the floppy if it's not supported everything would be fine (and /N5 not needed) I can't locate any documentation about 0:448 > My update to UIDE in adding the /E switch was simply to add a mask > which is 011h without /E, 000h with /E, to "mask" against the bits > at address 0:448h. This works fine. I prefer software that works without switches. at least if it can handle the situation itself. > But, if what you wrote above is correct, VirtualBox expects people > to use ONLY the "Int 13h" requests, when determining if a diskette > has change-line support. wrong. VirtualBox tells you 'change line is not supported' which part of this is difficult to understand ? > And in any event, by indicating NO such > support, as you also wrote above, they make it impossible for UIDE > to cache diskettes anyway! exactly. hands off these floppies. >> maybe the real issue is that noone finds the time to do a tiny bit of >> debugging the problem but finds a lot of time to write loooooong >> emails > To which I shall add: Maybe you might have read the UIDE.ASM file > before making any BASELESS and WRONG accusations about my drivers! neither BASELESS nor WRONG. and neither accusations. just stating that they behave suboptimal. Tom ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Freedos-user mailing list Freedosemail@example.com https://lists.sourceforge.net/lists/listinfo/freedos-user