This is off-topic, so please reply directly. Thanks.
My son was just given a Mac LC II without a monitor, but
including a keyboard and mouse. I am not a Mac user or
owner (until now), so I have no idea whatsoever to be looking
for in a replacement monitor. Is the LC II a B&W or Color
computer (I don't have the foggiest :-)? Help.
The computer has a 160MB hard drive, a floppy drive, and what
appears to be one memory SIMM (with four big chips on it, so
I'm guessing 4MB at most).
Cheers. Kevin
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Kevin L. Anderson Ph.D., Geography Department, Augustana College
Rock Island, Illinois 61201-2296, USA phone: (309) 794-7325
e-mail: kla(a)helios.augustana.edu -or- gganderson(a)augustana.edu
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Opinions expressed here are my own and do not represent
the administration of Augustana College.
>Also, I have these qbus boards from Sky Computer
>that I have no clue what they are; they're all quad height (assuming that
>means they have four connectors). They are Skywar-Q-A-03, Skywar-Q-B-03, and
>Skydpmem-Q-02.
Are there
Today I got a call from a man in Virginia and a e-mail from another who saw a reprint of the article done by the local Pioneer Press here in the twin cities. Has anyone on the list see the article on collecting classic ? If so can you e-mail me the names of the papers. Thanks John
->I've removed all boards save the memory boards (2*M7609)
>and the CPU (M7606-AA)
>
>Now I get characters (XON/OFF = on) and the bootprocess continues
>until char 3
Xon/Xoff is DECs standard flow control, VTxxxS know how to do that.
>I've tried to put some of the boards back but I am not sure if I have a
>missing
>board.
>
>Het boards were arranged as follows
>
slot 1 AB/CD >slot 1 ----------------M 7606------------------
slot 2 AB/CD >slot 2 ----------------M 7609------------------
slot 3 AB/CD >slot 3 ----------------M 7609------------------
slot 4/5 AB/AB >slot 4 -----M7516-------- (empty)
slot 7/6 AB/AB >slot 5 -----M7555-------- ------M7546------
slot 8/9 AB/AB >slot 6 (empty) ---Dilog sq703a---
This was the smaller BA23? if so then the slot next to the m7516 is the
bus grant break
and the slot 6 empty is a bus grant break. Notice my margin comments. the
odd ordering of
slots 4-9 indicate direction of bus grant for Interrupts and DMA.
>The uVAX used to contain a Serial concentrator or something
That was likely a DHV11 or DZV11, worth having.
>I've gathered that the first 4 slots are different from the rest of
>the BA123, those beeing true Qbus 22 slots.
Not quite. It's the AB/CD vs AB/AB serpentine bus grant. The BA123
has more of the AB/CD slots than BA23. FYI: AB are address/data
Q22 and CD or special bussed for memory or cards that only need
power.
> Should I rearrange the boards ? If so what do you suggest?
Yes.
slot 1 AB/CD >slot 1 ----------------M 7606------------------
slot 2 AB/CD >slot 2 ----------------M 7609------------------
slot 3 AB/CD >slot 3 ----------------M 7609------------------
slot 4/5 AB/AB >slot 4 -----M7516-------- ------m7546------
slot 7/6 AB/AB >slot 5 -----M7555-------- ------sq703A------
slot 8/9 AB/AB >slot 6 (empty) (empty)
Allison
>On Sun, Apr 09, 2000 at 03:24:06PM -0400, allisonp wrote:
>> >All H-89's were sold in kit form. The H-88 is another story. These
were
>> >early all in one computers and did have 8080 CPU's in the beginning.
Most
>> >H-88 units were upgrades to the H-19 terminals.
>>
>> Wrong! the H88 was the diskless version of the h89 and was z80. The h8x
>> were all z80. The basic design was H19 terminal with an additional Z80
>> based card (with peripherals on ad in cards).
>
>Which part is wrong, that it's an upgrade from the H19, or that it's
>substantially different from the H89? I'm pretty sure I remember Heath
>selling an H19-to-H89 upgrade kit, but I dunno where the H88 fits in.
That there was an 8080 in some versions. The H8 was the 8080 machine.
There was an h19 to h88/89/90 upgrade and that was the cpu, PS and IO.
The base H8x was a h19 with those added items. In many ways it was not
unlike a Vt180 approach.
Aquired two H89s and gave them away. Kept the H19 I built in 1978.
Allison
>All H-89's were sold in kit form. The H-88 is another story. These were
>early all in one computers and did have 8080 CPU's in the beginning. Most
>H-88 units were upgrades to the H-19 terminals.
Wrong! the H88 was the diskless version of the h89 and was z80. The h8x
were all z80. The basic design was H19 terminal with an additional Z80
based card (with peripherals on ad in cards).
All of the H/Z series are related and part of the changes reflects Heath to
Zenith transistion. The 88/89/90 were the same base machine with different
features namely different memory configs and disk subsystems.
Allison
In a message dated 4/9/00 13:16:27 Central Daylight Time,
ard(a)p850ug1.demon.co.uk writes:
> An H/Z88 is a cassette-based system. It's a Z19 terminal with a Z80 CPU
> board and a cassette interface. I don't know if the 3-port serial board
> came in this machine or not. Although it's based on the Z19 terminal,
> many machines were sold as H88 computers, etc, and were not
> field-upgraded Z19s (although that was possible).
The H-19 to H-88 kits changed later to H-19 to H-89 kits. I built both.
After the Floppy controller (Hard Sector) was released, the upgrade kits
could be ordered with the Floppy interface. Both my H-19 to H-88 kits came
with the serial card. Not sure when the H-88 disappeared from the line up
though.
The last H-89 I built was an "A". The CPU and TLB's came with RFI shields on
them. I still have that one. Runs a 4 MHz Z-80, Magnolia CP/M 2.2 and 3.0,
Magnolia 128K RAM drive, Magnolia 5"/8" floppy Controller and the Magnolia
Serial/SASI board. It still is a nice machine. Power supply upgrades were
also included.
Mike Stover, KB9VU
CCA# 404
CRA# 77
MARS AFA3BO
Florissant, MO
In a message dated 4/9/00 13:16:27 Central Daylight Time,
ard(a)p850ug1.demon.co.uk writes:
> As I understand it, an H?? is a Heathkit, and came in kit form. Actually,
> the CPU and terminal logic boards were factory assembled/tested, and you
> only got to assembly the PSU, video board and case :-(. The Z?? is a
> Zenith, and came assembled.
You also got to assemble the Serial card and the HS Floppy controller.
Mike Stover, KB9VU
CCA# 404
CRA# 77
MARS AFA3BO
Florissant, MO
On Apr 9, 14:32, Technoid(a)cheta.net wrote:
> Now my last and only problem is that BOTH of my sun keyboards (type 4)
> work well but BOTH of my optical mice have one led that DON'T LIGHT.
> Working on this one. Also I don't have a mousepad but I think I can
> construct one while I wait to find one.
Are you sure about that? One of the LEDs is an infrared LED, with no
output in the visible range.
> I have had difficulties locating pinouts and other tech info on the
mouse.
> Any suggestions?
ftp://ftp.ececs.uc.edu/pub/sun-faq/Docs/FixingASunMouse
Also worth a look is the section on converting a Sun optical mouse to an
SGI mouse, in
http://www.geocities.com/SiliconValley/Pines/2258/4dfaq.html
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
In a message dated 4/9/00 16:55:02 Central Daylight Time,
allisonp(a)world.std.com writes:
> >All H-89's were sold in kit form. The H-88 is another story. These were
> >early all in one computers and did have 8080 CPU's in the beginning. Most
> >H-88 units were upgrades to the H-19 terminals.
>
>
> Wrong! the H88 was the diskless version of the h89 and was z80. The h8x
> were all z80. The basic design was H19 terminal with an additional Z80
> based card (with peripherals on ad in cards).
>
>
> All of the H/Z series are related and part of the changes reflects Heath to
> Zenith transistion. The 88/89/90 were the same base machine with different
> features namely different memory configs and disk subsystems.
>
> Allison
>
>
Yep, I misspoke. Thinking H-8 and talking H-88. Thanks for the correction.
Mike Stover, KB9VU
