21 Aug
2000
21 Aug
'00
6:32 p.m.
"FBA" <fauradon(a)mn.mediaone.net> wrote:
How can you tell about the original ROMs and 13 sector
disk?
Integer BASIC leaves the D0 and D8 ROM sockets empty; Applesoft BASIC
fills all the ROM sockets. In Integer BASIC systems, D0 may be filled
with the Programmer's Aid #1 ROM.
The difference between 13-sector and 16-sector Disk ][ controllers is
the two ROMs on the card -- I believe the 13-sector ROMs are called
"P5" and "P6" while the 16-sector ROMs are called "P5A" and
"P6A". I
can't remember whether the ICs are stamped with this however.
-Frank McConnell
22 Aug
22 Aug
7:49 a.m.
On 21 Aug 2000, at 23:32, Frank McConnell wrote:
Integer BASIC leaves the D0 and D8 ROM sockets empty;
Applesoft BASIC
fills all the ROM sockets. In Integer BASIC systems, D0 may be filled
with the Programmer's Aid #1 ROM.
That's interesting, I always thought the Integer BASIC systems
only left one socket empty. That one was used if you bought the
Programmer's Aid #1. This system has Interger BASIC but only
has one socket empty so at first I figured it didn't have the
Programmer's Aid but maybe it does. I'll have to check tonight.
It does not have the original Monitor ROM. That seems to have
been replaced with the Auto-Start ROM. But I have one I can swap
with it. The mother board looks similar to the one in my early
Apple II+. It does have the jumper blocks on the side for memory
configuration. I'll have to check what revision it is.
It did come with the Red Book. I haven't looked through that, why
do those go for so much? Just because they didn't print that many
or does it have something the later manual was missing?
I believe the disk controller has been upgraded to a 16-sector
controller. I never thought about anyone looking for 13-sector
controllers. I bought my first system, an Apple II+, before the 16-
sector controllers and DOS 3.3 came out. When it did I put a
daughter board on my controller with a switch to select between 13
or 16 sector operation.
Other items that came with it. A bunch of other manuals, various
programs with the original boxes, 2 third party drives (can't recall
the name right now), original Apple Language Card & box, Grappler
Card, and some other stuff I dont' recall off the top of my head at
the moment.
Thanks for everyone's comments on value.
-----
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
8:19 a.m.
On Tue, 22 Aug 2000, David Williams wrote:
It did come with the Red Book. I haven't looked
through that, why
do those go for so much? Just because they didn't print that many
or does it have something the later manual was missing?
It has hand-written notes and diagrams by Woz in it making it quaint.
Also, it was only distributed with the earliest ]['s before they came out
with the spiral bound manual, making it fairly rare.
sector controllers and DOS 3.3 came out. When it did
I put a
daughter board on my controller with a switch to select between 13
or 16 sector operation.
Cool.
Sellam International Man of Intrigue and Danger
------------------------------------------------------------------------------
Looking for a six in a pile of nines...
VCF 4.0 is September 30-October 1
San Jose Convention Center, San Jose, California
See http://www.vintage.org for details!
10:04 a.m.
On 22 Aug 2000, at 13:19, Sellam Ismail wrote:
It has hand-written notes and diagrams by Woz in it
making it quaint.
Also, it was only distributed with the earliest ]['s before they came
out with the spiral bound manual, making it fairly rare.
Cool, I'll have to go and look at it again then. I flipped through it
real fast but didn't really look at it.
-----
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
10:37 a.m.
On Tue, 22 Aug 2000, David Williams wrote:
On 22 Aug 2000, at 13:19, Sellam Ismail wrote:
It's a choice piece of Apple ][ ephemera to have.
Sellam International Man of Intrigue and Danger
------------------------------------------------------------------------------
Looking for a six in a pile of nines...
VCF 4.0 is September 30-October 1
San Jose Convention Center, San Jose, California
See http://www.vintage.org for details!
It has hand-written notes and diagrams by Woz in
it making it quaint.
Also, it was only distributed with the earliest ]['s before they came
out with the spiral bound manual, making it fairly rare.
Cool, I'll have to go and look at it again then. I flipped through it
real fast but didn't really look at it.
2:58 p.m.
On 22 Aug 2000, at 15:37, Sellam Ismail wrote:
It's a choice piece of Apple ][ ephemera to have.
Well I looked over the Red Book tonight. It is pretty interesting to
look at but I don't think I'd pay as much as some people say it's
gone for. Of course I don't think I'll be selling it either. :-)
BTW, those third party drives are Lobo Drives. One of which
doesn't seem to be working. And the drive controller has been
upgraded to 16-sector.
-----
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
3:05 p.m.
On Tue, 22 Aug 2000, David Williams wrote:
BTW, those third party drives are Lobo Drives. One of
which
doesn't seem to be working. And the drive controller has been
upgraded to 16-sector.
I've got a couple of those. I believe Marvin may have some info on them
(I think he knew the founders of Lobo as they were a Santa Barbara
company).
Sellam International Man of Intrigue and Danger
------------------------------------------------------------------------------
Looking for a six in a pile of nines...
VCF 4.0 is September 30-October 1
San Jose Convention Center, San Jose, California
See http://www.vintage.org for details!
4:20 p.m.
On 22 Aug 2000, at 20:05, Sellam Ismail wrote:
I've got a couple of those. I believe Marvin may
have some info on
them (I think he knew the founders of Lobo as they were a Santa
Barbara company).
One of the drives seems to be working fine. The other makes the
"jackhammer" sound at startup as it positions the head but after
that the drive just spins and nothing else ever happens. Any ideas
on what to check? Not that I don't have plenty of Apple II drives but
it would be nice to have both these Lobo drives working since that's
what was used with this system.
-----
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
4:44 p.m.
On Tue, 22 Aug 2000, David Williams wrote:
One of the drives seems to be working fine. The other
makes the
"jackhammer" sound at startup as it positions the head but after
That's the drive being recalibrated. What's actually going on is the
drive head guide thingy is bumping up against the stop. The disk
controller boot code attempts to move the head back 35 or so tracks at
startup. This is to ensure that the head always starts out at track $00.
that the drive just spins and nothing else ever
happens. Any ideas
on what to check? Not that I don't have plenty of Apple II drives but
it would be nice to have both these Lobo drives working since that's
what was used with this system.
Clean the heads. Also, check the drive speed with a program like Copy
][+. It has an option under "VERIFY" to verify the speed of the drive.
You must have a blank disk to do the calibration with because it destroys
track $22. I don't know what the mechanism is to adjust the drive speed
of a Lobo drive. Probably very similar to the Disk ][ which involved
putting the exposed drive spindle disc under an flourescent light and
adjusting until the bars printed on the disc appear to be stationary. I
believe there is an easier method.
The Unidisk or Duodisk drives are much easier to adjust. They have a
micro-screw adjustment pot that's accessible from a small hole on the
underside of the drive.
Sellam International Man of Intrigue and Danger
------------------------------------------------------------------------------
Looking for a six in a pile of nines...
VCF 4.0 is September 30-October 1
San Jose Convention Center, San Jose, California
See http://www.vintage.org for details!
23 Aug
23 Aug
2:44 a.m.
On Tue, 22 Aug 2000, Sellam Ismail wrote:
of a Lobo drive. Probably very similar to the Disk ][
which involved
putting the exposed drive spindle disc under an flourescent light and
adjusting until the bars printed on the disc appear to be stationary. I
believe there is an easier method.
Oh wait a second. Big duh. I guess I was still stuck in general
knowledge mode. The easier method is to use Copy ][+ to display the drive
speed and then adjust with the microscrew. The flourescent light method
was for if you didn't have software to indicate the drive speed for you :)
Sellam International Man of Intrigue and Danger
------------------------------------------------------------------------------
Looking for a six in a pile of nines...
VCF 4.0 is September 30-October 1
San Jose Convention Center, San Jose, California
See http://www.vintage.org for details!
4:08 a.m.
New subject: Lobo drives (was: Original Apple II (not + or e or other)
I don't know what the mechanism is to adjust the
drive speed
of a Lobo drive.
Did Lobo make drives??
I thought that they just made the boxes and stuffed them with existing
drives (Shugart, etc.)
Later, however, they did make an "Expansion Interface" for TRS80s, which
then dumped them into having to get into OS's, which brought about
LSI/L-DOS.
4:41 a.m.
New subject: Lobo drives (was: Original Apple II (not + or e or other)
On 23 Aug 2000, at 9:08, Fred Cisin (XenoSoft) wrote:
Did Lobo make drives??
I thought that they just made the boxes and stuffed them with existing
drives (Shugart, etc.)
Well the drives I have look like the Shugart drives used in my Apple
Disk II drives. In fact, everything inside looks exactly the same
with the exception of a Lobo logo in place of the Apple logo on the
board inside the drive. But I haven't looked at it too closely yet.
-----
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
8887
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