Jeff,
> I don't see much point in this though since the HX's controller won't
> handle the 1.44 meg drive anyway. Plus, it'd be easy enough to add a floppy
> drive to it, but supposedly neither knock-out plate has been punched out
> behind either of the drive bays! This is what prompted my original post.
Why not check out the external 5.25" internals? Point is, can use
those easier to obtain 1.44mb drives and use them as 720k in old XT's
in place of harder to find 720k drives. I did that just like that
in one of those IBM XT using its original controller and a brand new
20 bux 1.44 in PC that allowed me to fire it up with my 720k Dos 5.0
and install it to hd also allows user to interchange data with newer
pcs easily. 360k was 40 tracks by 9 sectors, 720k used 80 tracks but
the older controller controlled this drives no problem therefore
any newer 1.44 will work as a 720k duty. In fact, 1.44 and 720k
drives only differs in minor ways: higher frequency heads, extra
sensor put in to support the 18 sectors.
BIG snap!
> Actually, it's an 8088 running at like 7.16mhz I
> believe. One needs the
> PLUS Memory board to add the memory above 256k, the DMA functions, and the two
> additional PLUS connectors for the additional cards. That's a neat idea about
> the SCSI though...heck, it'd be a cinch fitting one of the newer drives into
> one of the 1" x 3-1/2" drive bays. The only problem would be power to the
> drive, since as you've already mentioned, Tandy likes to send the power
> through the ribbon cable.
Thanks for correction and oddball mHz? Most clones uses 8mHz.
If you could look in external drive, it might have adapter wirings
that will allow you to make new cables adapters for that "1.44" as
720k drives to put in your HX machine.
nip!
> Yes, true, but XT class machines were still pretty much the norm for the
> low-end in '87 when the HX appeared. I'm glad to be getting another one
> though and remember 'PCM' making a big deal about the machine, asking if it
> might not be the best 1000-series machine up to that time. Too bad Tandy
> didn't at least make it a 286 like the TX which came out about the same time.
Yeah, but I considered the Tandy's pcs after 286 machines was made
then back to 8088's, 386 and 486 was study in quality stuff but one
hot rebuke to Tandy for NOT putting in cache for both 386 and 486
machines. :( When I aquired the Tandy 486 EP, used it to run Linux
and X windows on it, graphic engine performance is not there and
if it did have cache it would be a keeper but I traded it away to my
friend's for other items. Right now it's using win95 on it and my
friend is going to buy a ISA based windows accelerator card for it.
:(
The early first 1000 and maybe 2000 that used 2 sided
boards looked grabage similar to their 8 bit machines that I seen
along with some small percentage is not totally XT compatible. But
after 286, things improved enough to be a decent pc. Then RS
dropped ball and let competiters' PC's sold through RS. :(
Plus they always asks too much $ through and what kicks me hard was
canadian RS, yes I am canadian, tried to ask for heatsink paste there
because I saw they did have some but no longer stocked so I reduked
them for that unwise decision. And took the $ to my friend's local
audio repair business to order it in 1oz tube for 15 bux.
I also asked my other friend living in USA to check RS to see if RS
still stocks these white stuff. Consider a warning for canadian who
needs vital stuff from RS. :)
(Question: did Tandy used 386dx chips
in their machines and those sissy 386sx? I have seen few that did
used 386sx but not dx ones... and external cache in one of these
machine?)
Jason D.
Received on Tue Jul 01 1997 - 09:27:36 BST
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