15 Mar
2021
15 Mar
'21
7:23 a.m.
From: Guy Sotomayor
the LOADALL instructions including all of it's
warts (and its inability
to switch back from protected mode)
Good to have that confirmed (for the 286; apparently it works in the 386).
the other way to get back to real mode from protected
mode is via a
triple-fault.
Any insight into why IBM didn't use that, but went with the (allegedly slow)
keyboard hack?
Noel
15 Mar
15 Mar
9:42 a.m.
On 3/15/21 7:23 AM, Noel Chiappa via cctalk wrote:
The 386
loadall instruction was different (not really a surprise since
the internal microarchitecture was different).? The 386 didn't need to
do this "hack" because it had vm86 mode for tasks so that accomplished
what everyone was really using LOADALL on the 286 for.
At this point I don't recall.? But I suspect it was allegedly
simpler
conceptually.
--
TTFN - Guy
From: Guy
Sotomayor
the LOADALL instructions including all of
it's warts (and its inability
to switch back from protected mode)
Good to have that confirmed (for the 286; apparently it works in the 386). the other way to get back to real mode from
protected mode is via a
triple-fault.
Any insight into why IBM didn't use that, but went with the (allegedly slow)
keyboard hack? 
16 Mar
16 Mar
7:48 a.m.
New subject: who collects modems?
Clearing out stuff at my space, I have the following modems:
NEC UltraLite-Series Image Modem Plus w/box
CTS Datacomm 2424 ADA modem w/box
Scout Plus External Data/Fax modem w/box
Digital DF03 modem
Any offers?
--tom
10:08 a.m.
New subject: who collects modems?
i do but they often dont seem to work over rtc input of internet boxes
which is a shame
Le mar. 16 mars 2021 ? 16:30, Tom Uban via cctech <cctech at classiccmp.org> a
?crit :
Clearing out stuff at my space, I have the following
modems:
NEC UltraLite-Series Image Modem Plus w/box
CTS Datacomm 2424 ADA modem w/box
Scout Plus External Data/Fax modem w/box
Digital DF03 modem
Any offers?
--tom
2:24 p.m.
New subject: who collects modems?
I wouldn't mind getting my hands on a second acoustic coupler modem like the Novation
Cat (or the Radio Shack or Apple-badged versions) with a standard RS232 connector or
equivalent brand. Mostly for demo purposes, but has to be working.
RichC
?On 3/16/21, 3:09 PM, "cctalk on behalf of david raingeard via cctalk"
<cctalk-bounces at classiccmp.org on behalf of cctalk at classiccmp.org> wrote:
i do but they often dont seem to work over rtc input of internet boxes
which is a shame
Le mar. 16 mars 2021 ? 16:30, Tom Uban via cctech <cctech at classiccmp.org> a
?crit :
Clearing out stuff at my space, I have the following
modems:
NEC UltraLite-Series Image Modem Plus w/box
CTS Datacomm 2424 ADA modem w/box
Scout Plus External Data/Fax modem w/box
Digital DF03 modem
Any offers?
--tom
3:17 p.m.
New subject: who collects modems?
I just discovered one more modem in my "collection".
An Anderson Jacobson Model A 242A acoustic coupler modem.
BTW, the DF03 is spoken for.
--tom
On 3/16/21 4:24 PM, Richard Cini via cctalk wrote:
I wouldn't mind getting my hands on a second
acoustic coupler modem like the Novation Cat (or the Radio Shack or Apple-badged versions)
with a standard RS232 connector or equivalent brand. Mostly for demo purposes, but has to
be working.
RichC
?On 3/16/21, 3:09 PM, "cctalk on behalf of david raingeard via cctalk"
<cctalk-bounces at classiccmp.org on behalf of cctalk at classiccmp.org> wrote:
i do but they often dont seem to work over rtc input of internet boxes
which is a shame
Le mar. 16 mars 2021 ? 16:30, Tom Uban via cctech <cctech at classiccmp.org> a
?crit :
Clearing out stuff at my space, I have the
following modems:
NEC UltraLite-Series Image Modem Plus w/box
CTS Datacomm 2424 ADA modem w/box
Scout Plus External Data/Fax modem w/box
Digital DF03 modem
Any offers?
--tom
17 Mar
17 Mar
4:06 a.m.
New subject: who collects modems?
I dont "collect" them but they seem to spontaneously accumulate here
On Wed, Mar 17, 2021, 3:23 AM Tom Uban via cctalk <cctalk at classiccmp.org>
wrote:
I just discovered one more modem in my
"collection".
An Anderson Jacobson Model A 242A acoustic coupler modem.
BTW, the DF03 is spoken for.
--tom
On 3/16/21 4:24 PM, Richard Cini via cctalk wrote:
I wouldn't mind getting my hands on a second
acoustic coupler modem like
the Novation Cat (or the Radio Shack or Apple-badged
versions) with a
standard RS232 connector or equivalent brand. Mostly for demo purposes, but
has to be working.
RichC
?On 3/16/21, 3:09 PM, "cctalk on behalf of david raingeard via cctalk" <
cctalk-bounces at classiccmp.org on behalf of cctalk at classiccmp.org> wrote:
i do but they often dont seem to work over rtc input of internet
boxes
which is a shame
Le mar. 16 mars 2021 ? 16:30, Tom Uban via cctech <
cctech at
classiccmp.org> a
?crit :
Clearing out stuff at my space, I have the
following modems:
NEC UltraLite-Series Image Modem Plus w/box
CTS Datacomm 2424 ADA modem w/box
Scout Plus External Data/Fax modem w/box
Digital DF03 modem
Any offers?
--tom
1375
days inactive
1377
days old
6 comments
6 participants
participants (6)
-
billdegnan＠gmail.com -
david.raingeard＠gmail.com -
ggs＠shiresoft.com -
jnc＠mercury.lcs.mit.edu -
rich.cini＠verizon.net -
tom＠figureeightbrewing.com