Bernie wrote:
>
> Clarence wrote:
> >I've got an Orchid Turbo '286 with 2M ram on it on which I have run Windows.
> >I know you can load Vdisk on it and I'm pretty sure I can find a cache prog
> >which will use it. I'll try it and get back to you.
>
> Thanks.
> I actually have a vdisk.sys file but it complains it's the wrong DOS version.
> It's currently running IBM DOS 5 with a few things added from MS-DOS 5
> (edit and qbasic actually) earlier it was one of the MS-DOS 3.x versions
> (3.1x something... (1 or 5?) IIRC but that was like 1990 or so). I did
> start MS-DOS 6.2 on a floppy just to be able to use "defrag" no it.
Hi Bernie;
Ok, I tried PC-cache and it can load into EMS memory - but you need an EMM.
I have this thing in the Orchid software "TurboEMM.sys" which works for me
but it might be Orchid specific. If you don't have an EMM which will work
on a '286 you can try it. Strangely, PC-cache loads but won't cache my MFM
hard disk - says it doesn't recognize it.
Also, the Orchid software includes a program simply called "CACHE" that DOES
recognize the HD and will put the cache anywhere - DOS area, expanded (EMM) or
extended (AT style above 1MB). It may also be Orchid hardware specific but you
are welcome to try it.
> Another question since the HD is 20MB I could use FAT12 on it couldn't I?
> Wouldn't that reduce the size of the allocated units and thereby giving me
> more free space? (1024 vs 2048 IIRC)
No, the ALUs for FAT12 would have to be 8192. My quick calc indicates you can't
allocate a 20Mb HD with 4k ALUs - you need at least 5120 bytes. With FAT16 you
could get the ALUs down to 1024 and still access 64Mb. FAT14 would access 32Mb
space with 2048 byte ALUs.
I don't know how you change the ALU size. :-((
- Clarence Verge
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