5 Aug
2000
5 Aug
'00
8:11 a.m.
At 11:44 PM 8/3/00 -0400, you wrote:
You should be glad that your didn't get the original chicklet keyboard!
Your's probably had it originally but it was probably replaced sometime.
AFIK ALL A models came with the chicklet keyboards but a lot of them were
replaced with full travel keyboards. The HP designers were proud of the
chicklet keyboard but it seems that all the users hated it.
I don't have that book. While I'm not especially interested in
microprocessors generally, these little boards remind me of the first
machine I owned myself -- although at 512 bytes, this one has *twice* as
much memory. *Luxury*!
If you're not too attached to it, I'd like to have it. I have a
collection of 6800 stuff. That's the CPU that's used in my Tektronix 4051
and in the old Heathkit trainer that I have.
Joe
On 2000/08/03 at 8:08am -0500, you wrote:
That is odd. What model 9845 do you have? I have several Bs and I'm
looking for a C (color) model.
Yes, the interfaces are the same but the ROMs
are very different. Do
you have a 9845?
Yes, and by coincidence it has exactly the interfaces and peripherals
corresponding to the 9825's ROMs. Does the 9825 have the
pull-out system ROM in the side or only a slotted cover? If it has the ROM
then it's a 9825 A, if it has the slotted cover then it's a B model.
It does have the side ROM drawer (and is marked 9825A), though it has the
full-travel keyboard (which IMHO is *horrible* -- nothing like the
contactless keys on the 9845). Also got a
6800 evaluation board, MEK6800D2, with hex keypad & LED display.
That's cool. The 6800 evaluation boards are rare. That module is
described in Motorola's MicroProcesor Applications Manual for the 6800. I
HIGHLY recommend that book if you're interested in the 6800s.
--
Kevin Schoedel
schoedel(a)kw.igs.net