On 2015-10-22 15:32, william degnan wrote:
Let me clarify... I agree the 100 is a separate machine from the "core
101/102" terminal, even with the same options.
On my vt100 the ROM is different than my vt102, but my 100 has the 132 char
graphics upgrade so it's functionally like the 102 in that way. Looks
differently inside.
Having 132 columns does not necessarily mean anything.
A standard VT100 have 132 columns. However, it only have 12 lines when
in 132 column mode. It also have only one attribute on characters, which
is either underline or reverse. And that depends on what style of cursor
you have.
The AVO options adds 132 columns with 24 lines, as well as all four
attributes.
Johnny
On Thu, Oct 22, 2015 at 9:15 AM, Johnny Billquist <[email protected]> wrote:
On 2015-10-22 15:05, william degnan wrote:
Note that while in theory the AVO was an added option, the VT102 did not
have it (or the printer port) as separate parts that were added to a
basic
VT100. The VT102 had a different board with all those options already on
the motherboard, and no additional options could be installed.
So, you cannot take the AVO options out of a VT102 and add it to a VT100
(for example).
Also, for example, the keyboard on a VT100 differs from a VT102.
You could use a VT100 keyboard on a VT102, and vice versa, but the LEDs
on
the keyboard of a VT102 are used for different things than on a VT100.
Johnny
Thanks for the clarification. I you're saying for the 101 and 102 you
start with a core terminal at the factory and they add the options or it's
a field upgrade kind of thing because parts not swapped out easily or
added. I confirm about the ROMs too, I noticed that the SetUp menus
differ
depending on what options are installed.
No.
The VT100 is field upgradeable to a VT101 (I think) or a VT102 (I know).
However, the VT102 is not the same as a VT100 with the added AVO and
printer. Functionally they are the same, but inside they will look
different.
The VT102 have a motherboard with the AVO and printer option integrated
into the motherboard itself. A VT100 with the options added will have a
daughterboard and components added to it's motherboard.
So, the VT102 do not start out as a VT100 and then some stuff added.
There were (if I remember right) some other options for the VT100 as well.
You cannot add those other options to a VT102 either. The VT102 is pretty
much a fixed and finished product as it is. The VT100 on the other hand
could be expanded in various ways.
The VT102 was basically a cost reduced solution with a fixed set of
options, which were the ones most commonly asked for and used.
And, as I mentioned, they redesignated some keyboard LEDs on the VT102 for
specific information. Thus, on a VT100 you have four user programmable LEDs
on the keyboard, but on the VT102 you only have one.
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: [email protected] || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: [email protected] || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
