19 May
2014
19 May
'14
12:24 p.m.
----- Original Message -----
Date: Sun, 18 May 2014 19:31:36 -0600
From: Eric Smith <spacewar at gmail.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
On May 18, 2014 7:22 PM, "Jason T" <silent700 at gmail.com> wrote:
----- Reply: -----
A little clarification:
HP Portable (HP110): Model 45710A, 80x16 screen.
HP Portable Plus (HP110 Plus): Model 45711A, very similar indeed but with
80x25 screen, expandable RAM & ROM and a faster (now optional) modem.
single-purpose utility. Too bad, I'd have
been tickled to see a 110
(had to look up "Portable Plus" to find that they were the same) with
Not quite the same, though very similar. The "Portable" is the HP 110, and
the "Portable Plus" is the HP 45711. 
19 May
19 May
2:37 p.m.
A little clarification:
HP Portable (HP110): Model 45710A, 80x16 screen.
HP Portable Plus (HP110 Plus): Model 45711A, very similar indeed but with
80x25 screen, expandable RAM & ROM and a faster (now optional) modem.
Strictly the modem was optional o nthe HP110 too, in that (at least) the
UK model didn't ahve it But since this involved omitting some chips from
the I/O PCB (and IIRC soldering jumper wires between some of the unused
holes), the modem could not be fitted later.
In the Portable Plus, the mdoem was a separate board, it could be fitted
after production. I think the configuration EPROM had to be rewritten, I
can check.
-tony
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