25 Apr
2001
25 Apr
'01
7:24 p.m.
In a message dated 4/25/01 6:42:50 PM Eastern Daylight Time,
cisin(a)xenosoft.com writes:
<< > if it's the IBM sidecar that plugs in, the system should detect it
automagically. I have one on my hard drive equipped jr
that was modded so
the
computer has 640k total.
Ny recollection was that the original message specified that it was NOT
the IBM sidecar. >>
I would still think any memory expansion option would be counted up at POST
because the computer can boot with carts installed rather than floppy and
also, the standard pcjr model has no disk drives! The enhanced model that
everyone seems to have includes one floppy drive.
--
DB Young Team OS/2
old computers, hot rod pinto and more at:
www.nothingtodo.org
25 Apr
25 Apr
8:44 p.m.
New subject: PC-Jr (was: Repair techniques ... I/O pins and power supplie
On 25-Apr-2001 SUPRDAVE(a)aol.com wrote:
I would still think any memory expansion option would
be counted up at
POST because the computer can boot with carts installed rather than
floppy and also, the standard pcjr model has no disk drives! The
enhanced model that everyone seems to have includes one floppy drive.
Without a floppy, the PCjr boots into cassette basic (if the cassette is
in) or ROM basic which only addresses 64kb anyway.
I recall having to fiddle around with "drivers" way back when I had a PCjr
with an expansion sidecar.
-Philip
9:26 p.m.
On Wed, 25 Apr 2001 SUPRDAVE(a)aol.com wrote:
I would still think any memory expansion option would
be counted up at POST
because the computer can boot with carts installed rather than floppy and
also, the standard pcjr model has no disk drives! The enhanced model that
everyone seems to have includes one floppy drive.
That would certainly make sense.
But this is IBM.
I had several, (purchased originally without drives)
I sold the last of them at VCF. The last one that I sold had a expansion
unit that needed "special software", and homemade drive mounts (erector
set parts)
I remember 2 different brands of memory expansion units that required
"special software" to see the memory. And one that did NOT require
"special software" - there was a ROM in it in addition to the RAM.
The original question mentioned it being a "Rapport" unit. Was that the
same company that made the "Impulse" unit?
--
Grumpy Ol' Fred cisin(a)xenosoft.com
11:04 p.m.
New subject: PC-Jr
At 07:24 PM 4/25/01 -0400, you wrote:
I would still think any memory expansion option would
be counted up at POST
Mine did all the way up to 640k
because the computer can boot with carts installed
rather than floppy and
also, the standard pcjr model has no disk drives! The enhanced model that
everyone seems to have includes one floppy drive.
The smaller of the two models had no disk drive, just a tape drive.
The other model had one diskette drive.
I added a second diskette drive.
By the way if anyone is interested I have a couple of PCjr sidecars for
sale on my web site. One is extra memory and the other is a printer sidecar.
Gene
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P.O. Box 3365 Spring Hill Florida 34611-3365
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participants (4)
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cisin＠xenosoft.com -
gene＠ehrich.com -
liste＠artware.qc.ca -
SUPRDAVE＠aol.com