2 Jul
1998
2 Jul
'98
6:15 a.m.
Well, I am letting three Compaq deskpros rot in the rain outside-
I just have nothing for them to do. I'm sure they still work.
Anyone know what compaq made that godforsaken power interface for?
Saved a Compaq Portable(w/5.25" FD and unknown
5.25" FH HD) from a
dumpster... AFTER a 10 foot flight into it! Plugged it in and it still
works... Needs some repairs, I can hear stuff rattling around inside,
but
it does work... Booted from the hard drive with Compaq
DOS 3.31. Also
got a
MasterSport 386SL(386SX-20, 4MB RAM, 63MB HD) and a 486
motherboard(gonna
set it up with Linux or something). Also getting a 1970
VW Bug for my
birthday next week... I suppose this makes it a good day despite the
belt
clip on my radio breaking this morning(now I get to
make a nice metal
one
to replace the broken plastic one).
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7:09 a.m.
New subject: Any good search spots in L.A.?
Howdy, all,
I'm in sunny Glendale for the weekend, staying with a friend, and would love
to take the opportunity to scour the area for goodies. Any suggestions? I'd
rather take a planned approach than wander around the valley, looking for
Goodwills. I realize that the Bay Areais better pickings than Los Angeles,
but here is where I am.
Later,
-ethan
5:44 p.m.
New subject: Find: "Z80 Starter Kit" - any hints?
Yo,
Mere hours after posting about searching for computer scrounging locales
in L.A., I went to "Joe Factor Sales" (corner of Burbank and Hollywood
Way), nominally a fastener house. Amongst the rows of military screws
and wall of heavy duty hoses, my companion pointed out a lone computer
board. When he pointed it out, I initially thought it was an Elf-II;
it's the same size, has LEDs and a keypad, but it was something else
entirely...
The previous owner had glued a speaker to the upper left corner, obscuring
the legend. After the proprietor had separated a fool from his money^H^H^H^H^H
sold me the board, I pried the speaker off. Underneath was...
Z80 Starter Kit
SDS SD Systems
(C) 1978 MICRO DESIGN CONCEPTS
It packs a Z80 w/PIO and CTC, 8 socketed 2101L RAMs (and room for 8 more!),
a prototyping area (with labeled address and data bits right there), and two
(unpopulated) S-100 slots (with pads for -/+16V and +8V) In addition, there's
jacks for a cassette tape drive (and buttons labelled "cass load" and
"cass
dump"), and below the ROM socket (w/masked programmed ROM "Z-BUG"), a
toggle
switch ("PGM"/"READ") and a 24-pin DIP socket marked "PRO
PROGRAMMER".
With all that, I still have questions:
o Is there any info on this? It looks much like a SYM-1 or Elf
of the day, but with a Z-80.
o What ROMs might it program? 1702? (unlikely because of a lack of
odd power supply voltages) 2708? There is a pad at one edge of
the board that snakes over to the PGM/READ button, marked +25V.
I simply do not know which particular 1978 ROMs used that particular
programming voltage.
o Why might I have heard of "Z-BUG"? Was it a famous monitor program
for the Z-80 boards of the late 70's?
o If I can't find a good use for this, does anyone want to make me
an offer for it? I promise that I won't just go out and post it
on E-overpay.
Thanks for any hints. I'd love to learn more about the history of this
thing. I just got it because it was a) affordable, b) a 1970's SBC, and
c) it has a place to add cards and my own circuits, should I decide that's
worth the effort. I could always wire on a 6164 RAM and a SCSI chip, but
then what would I do?
-ethan
7:44 p.m.
New subject: Find: "Z80 Starter Kit" - any hints?
On Fri, 3 Jul 1998, Ethan Dicks wrote:
Z80 Starter Kit
SDS SD Systems
(C) 1978 MICRO DESIGN CONCEPTS
It packs a Z80 w/PIO and CTC, 8 socketed 2101L RAMs (and room for 8 more!),
a prototyping area (with labeled address and data bits right there), and two
(unpopulated) S-100 slots (with pads for -/+16V and +8V) In addition, there's
jacks for a cassette tape drive (and buttons labelled "cass load" and
"cass
dump"), and below the ROM socket (w/masked programmed ROM "Z-BUG"), a
toggle
switch ("PGM"/"READ") and a 24-pin DIP socket marked "PRO
PROGRAMMER".
With all that, I still have questions:
o Is there any info on this? It looks much like a SYM-1 or Elf
of the day, but with a Z-80.
I have one of these with the manual. I don't know if I can find it in my
mess but if you'd like I can give it a try and maybe send you a couple
paragraphs from it.
o If I can't find a good use for this, does anyone want to make me
an offer for it? I promise that I won't just go out and post it
on E-overpay.
Its a relatively obscure board. I know of two others who have one, maybe
a third. And now, of course, you.
Sam Alternate e-mail: dastar(a)siconic.com
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3 Jul
3 Jul
1:25 a.m.
R. Stricklin (kjaeros) wrote:
On Thu, 2 Jul 1998, Max Eskin wrote:
the DIN connector on the back of the machine? Exactly for that. Is max
looking for a 12v mono amber monitor for one?
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Anyone know what compaq made that godforsaken
power interface for?
Power for the Compaq Mono monitor.
9669
days inactive
9670
days old
5 comments
5 participants
participants (5)
-
dastar＠ncal.verio.com -
erd＠infinet.com -
maxeskin＠hotmail.com -
red＠bears.org -
rhblake＠bibtel.com