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- From: cgordon@vpnet.chi.il.us (gordon hlavenka)
- Newsgroups: comp.os.msdos.misc
- Subject: Re: IBM XT upgrade
- Keywords: XT
- Message-ID: <1992Dec30.170929.5607@vpnet.chi.il.us>
- Date: 30 Dec 92 17:09:29 GMT
- References: <50921@shamash.cdc.com>
- Organization: Vpnet Public Access
- Lines: 63
-
-
- slc@a2.cim.cdc.com (Steve Chesney x4662) writes:
- >At my wife's job (a church) she is obligated to use a vintage IBM XT with
- >a 10 meg hard disk, color display and IBM PC-DOS 2.10.
-
- >upgrade to MS-DOS 5.0
- Bad move. If necessary for software compatibility, upgrade to DOS
- 3.3. On an XT, 5.0 will use more conventional memory. There's no
- appreciable speed gain from changing DOS versions, though, so if 2.10
- runs all the software she needs to run, then leave 2.10 in place.
-
- >use of a console driver like NANSI
- If you need an ANSI driver, NANSI or something like that would speed
- things up a bit. But few programs actually require ANSI support --
- and even a "fast" ANSI-replacement will be slower than no ANSI at all.
- So try running without ANSI support; if all the software works leave
- ANSI out of the picture. Otherwise, use NANSI or somesuch. DOS'
- ANSI.SYS is a pig.
-
- Display enhancers (like ANSI or Windows) should only be used when
- specifically required by essential software.
-
- >use of a disk cache
- Will speed up disk access, at the expense of conventional memory. You
- didn't mention an EMS board, so I'm assuming the system doesn't have
- one. Remember you can't load anything into "high" memory on an XT!
- In any case, unless your software is disk-intensive the speedup --
- while dramatic -- will only affect certain operations.
-
- >optimize the disk (with something PC TOols Optimize)
- This one never hurts (provided you do a backup first!) You will only
- actually need to optimize your disk once or twice a year, if speed is
- your only concern. Most people optimize _way_ too often.
-
- >check disk interleave and adjust (with SpinRite or PC Tools DiskFix)
- This will help if the interleave is non-optimal. Of course, you only
- need to do it once in the life of the machine. (Unless you make a
- MAJOR change to the hardware!)
-
- >Any other ideas?
- Replace the 8088 processor with an NEC V20. This will speed things up
- a little. The cost is under $10 and it can be done by anyone brave
- enough to open the machine -- it's just a chip swap. (Also this is
- one of those "MAJOR" changes -- see above :-)
-
- You could also speed things up nicely by changing to a newer hard disk
- (the XT drives have access times approaching 100 msec!) or dropping in
- a 286 booster. But if you have that kind of money available, you'd be
- better off spending it on an actual 286 machine (Great deals these
- days!) rather than kludging a 286 into an 8-bit machine.
-
- In general, my upgrade philosophy is:
- 1- Don't fix what works. ("First, cause no harm.")
- 2- Upgrade the hardware first, then the software. The same old
- program on a faster machine is usually faster than the new version on
- tired old iron.
- 3- If the proposed "upgrade" costs more than 25% of the cost of a new
- machine, consider biting the bullet and replacing the machine.
-
- --
- ----------------------------------------------------
- Gordon S. Hlavenka cgordon@vpnet.chi.il.us
- Vote straight ticket Procrastination party Dec. 3rd!
-