I've posted some pictures of the blue panel 11/35 and
a PDP-8a that I recently acquired and got up and running.
The pictures are at:
http://www.woffordwitch.com/PDPCollection.asp
Click on the Blue Panel PDP-11/35 link.
Ashley
>
>Subject: Compupro progress / Console questions ?
> From: Dave Dunfield <dave04a at dunfield.com>
> Date: Sun, 24 Jul 2005 11:06:07 -0400
> To: cctalk at classiccmp.org
>
>Hi Guys,
>
>I disassembled the boot ROM, and rebuilt it with some output to
>show what was reading from the FDC.
>
>I determined that it was aborting the READ command with a "Drive
>changed Ready State during command". I tested the SA-851 drives on
>a different machine, but it appears they are incompatible with or
>not jumpered correctly for the Compupro controller.
known but forgotton problem in the 8" world. 765 has a READY sense line
and the 851 is know for changing state of the line during select.
Solution, force ready at the board (jumper) and don't use it. READY
was for detecting disk changes.
>According to Compupro Docs, the Console port is USER 7 - I have
>setup the board to respond to users 4-7, which is the default setup
>requireed for the console shows in the Compupro docs. As noted
>above, I can select user7 and talk to the console correctly, which
>would suggest that this is all working correctly.
It is likely initing the ports but may not use any of them. It's
possible the bootable media may use a different port scheme. Its
likely a difference between the boot roms and the BIOS code once
the boot transfers to the OS.
I assume based on the CPU your runnig CP/m-86 (or any DRI -86)
as the boot roms load a loader then load the OS (bios and all).
So booting is multi step code.
Allison
On Jul 24 2005, 12:04, Jules Richardson wrote:
>
> Curiousity for the day - is there any difference between the use of
disk
> and disc when describing floppy drives, hard drives etc.?
>
> The majority of people seem to use disc, but the use of one or the
other
> doesn't seem to be a regional thing.
You'd probably find most Americans would prefer "disk", and "disc"
would probably be found mainly in UK. Originally "disc" was the
English spelling (from the Latin "discus"), and "disk" was American.
Acorn were obsessive about using the "disc" spelling, but the
distinction is long gone for most people. Even the OED lists both and
has done since at least the early 80s. The difference in usage has
nothing to do with differences between floppies, mini-floppies,
micro-floppies, hard drives, or CDs (though CDs are "Compact Discs").
--
Pete Peter Turnbull
Network Manager
University of York
If anyone is interested in playing with it, my ImageDisk replacement for
Teledisk is getting to the point where it can backup and restore pretty
much everything I've been able to do with Teledisk (although it doesn't
quietly make garbage images from unreadable/incompatible disks like
Teledisk) ... still very preliminary, however if anyone wants to
play with it, drop me a line.
Regards,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.parse.com/~ddunfield/museum/index.html
Hi Guys,
I've made some progress on the Compupro system.
This is a Godbout/Compupro S-100 system with:
8086/87 CPU
DISK1 Floppy Disk controller
Interfacer4 I/O
Disk2 and Selector Channel (for HD - not installed)
The problem I first posted what that it would select the drive
with no disk in the drive, but not with a diskette!
I disassembled the boot ROM, and rebuilt it with some output to
show what was reading from the FDC.
I determined that it was aborting the READ command with a "Drive
changed Ready State during command". I tested the SA-851 drives on
a different machine, but it appears they are incompatible with or
not jumpered correctly for the Compupro controller.
I hooked up a more modern 8" drive, and now the system goes through
the booting motions reliably.
In doing my debug, I also confirmed that the console port on the
Interfacer 4 is working correctly (thats what I used for the debug
output).
According to Compupro Docs, the Console port is USER 7 - I have
setup the board to respond to users 4-7, which is the default setup
requireed for the console shows in the Compupro docs. As noted
above, I can select user7 and talk to the console correctly, which
would suggest that this is all working correctly.
The DISK1A docs say: Switch 3 position 1 should be ON to use the
"System Support 1" as the console, and OFF to use an Interfacer
3 or 4, user 7 as the console.
I have checked that this switch is OFF, and that the bit is
actually not grounded.
When I boot the system, I see the RTS+DTR lines come up on all
three serial ports, however I never get any console output.
Either the console configuration does not match tbe boot disk,
or the system is crashing/hanging during startup.
The disks I am using are original Compupro distribution disks
(Can't make copies yet), labled:
Serial# C86-272-1854
Version: CP/< 86 (P0 in handwriting)
CP/M 86 1.1
SYSTEM MASTER
Disk Number 1
Single Sided - 1024 B/S
Serial# C86-0272-1854
Version: 1R
CP/M 86
SYSTEM MASTER
Disk Number 2 of 2
Single Sided - 1024 B/S
Disk 1 appears to do nothing, however Disk 2 is obviously
booting - it recalibrates, reads a bit, seeks out a bit and
reads some more, then seeks way out to read a bit more and
back to near Track 0 - or something like that. Part way
though this the RTS+DTR lights come up on the serial ports.
Does anyone have any ideas as to what could be going wrong?
It looks like all of the hardware is working.
Anyone got a known good CP/M 86 disk for Compupro with
Inerfacer 4 as the console?
Regards,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.parse.com/~ddunfield/museum/index.html
It sounds like I need to clarify :). The models I have are the Apple II
(?, this is what started this thread), Apple II+, Apple //c, Apple //c+,
Apple //e, Apple //e enhanced, Apple 3, Lisa 2, Mac 128, Mac 512, and
the Mac Plus. This is where I intend to stop the Apple stuff and I've
gotten rid of most of the others. I tend not to keep track of the PC
board revisions. I guess from a historical perspective, that would be
something worth documenting. But I am not an Apple person and thus not
the person to do it. At any rate, I'll be downsizing the extra Apple
computers on VCM as I continue to make room to play with the stuff *I*
want to play with!
> From: Fred Cisin <cisin at xenosoft.com>
> On Thu, 21 Jul 2005, Marvin Johnston wrote:
> > machines? If I indeed have the Apple II, then all I am looking for will
> > be the Bell & Howell Black Apple II+ to complete the Apple II series of
> > machines through the Apple //e enhanced.
>
> COMPLETE??
> perhaps someone could list all of the motherboard changes and keyboard
> variants
Hi--
I've got a pile of tk50's I'd like to preserve
the contents of. Maybe 300 or so.
what's the fastest drive for reading them?
I have a qbus tk70, and probably a tkz-50 somewhere,
but if it could read them faster, I'd be perfectly
willing to acquire a tz30 or a dlt. Surplus dlt stackers
like a tz887 are pretty cheap these days; could one
of those do the job?
format wise, many of the tapes are vms sw install kits.
is there a way (ie, existing sw and formats) to archive
these such that new install tapes could be cut without needing
a vms system to do it?
--t.i.a.
--akb
> Gene Buckles's retroarchive.org seems to be down. Does anyone know if
> it's permanent and did anyone mirror it?
>
> James
I guess I should have asked Gene directly.
--
www.blackcube.org The Texas State Home for Wayward and Orphaned Computers
I've just come across an HP box containing 5 3.5" floppies. They all have
original HP labels on them.
All the labels contain the following
Hewlett-Packard
9000 Series 200/300
98616A Opt. 045
BASIC 5.1
The rest of ithe label depends on the disk :
System Disk
Pat No 98616-10500 Rev. 5.1
Drivers + Language Ext
Part No 98616-10501 Rev. 5.1
Utilities Disc
Part No 98616-10502 Rev. 5.1
HFS Utilities
Part No 98616-10503 Rev. 5.1
Manual Examples Disc
Part No 98616-10504 Rev 5.1
Anyone know what it is, and what machine it runs on?
-tony
