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This groups is for support and discussion of the MFM disk reader/emulator project
http://www.pdp8online.com/mfm.
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Gotcha TL
, …
William Stillwell
5
Jul 5
Handling a ST-506 hard (Xebec 1410 controller)
I had one time had troubles with an Xebec Controller with ST-506, I think if you dig through the
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Handling a ST-506 hard (Xebec 1410 controller)
I had one time had troubles with an Xebec Controller with ST-506, I think if you dig through the
Jul 5
Alison Telford
,
d...@pdp8online.com
10
Jun 11
MFM Emulation on IBM PS/2 Model 50 -- success
I was using an (indicated) 12V 2A (wall-wart) plug attached to a converted (barrel-jack-to-molex).
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MFM Emulation on IBM PS/2 Model 50 -- success
I was using an (indicated) 12V 2A (wall-wart) plug attached to a converted (barrel-jack-to-molex).
Jun 11
David Waine
,
David Gesswein
3
May 30
Trying (and failing) to low level format a track
Good morning David, Thanks for your prompt and content-rich reply. It's going to take me a while
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Trying (and failing) to low level format a track
Good morning David, Thanks for your prompt and content-rich reply. It's going to take me a while
May 30
Cliff Miller
,
David Gesswein
9
May 21
Compaq Portable Plus
Sort of. The emulator image is raw MFM encoded data. Only think I know that can use it directly is
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Compaq Portable Plus
Sort of. The emulator image is raw MFM encoded data. Only think I know that can use it directly is
May 21
Seth Morabito
,
David Gesswein
10
May 13
ext2emu support for 3B2
Not much wants -d 0. Next update the mfm_emu command page will make that clearer. Did you find -d 0
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ext2emu support for 3B2
Not much wants -d 0. Next update the mfm_emu command page will make that clearer. Did you find -d 0
May 13
David Waine
,
David Gesswein
3
Apr 21
"Write and step are active" error message
Set you run setup_emu? You will get that error if you haven't run it before running mfm_emu. I
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"Write and step are active" error message
Set you run setup_emu? You will get that error if you haven't run it before running mfm_emu. I
Apr 21
d...@pdp8online.com
,
Adam Billyard
2
Mar 24
Bug found in mfm_emu
FWIW, with this fix I now get ZERO glitch error messages on my Tektronix 4404. On Thursday 21 March
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Bug found in mfm_emu
FWIW, with this fix I now get ZERO glitch error messages on my Tektronix 4404. On Thursday 21 March
Mar 24
Adam Billyard
Mar 18
Made a PR for prucode0.p
Cosmetic / code clarity. Removed ifdef REVC nested inside a ifdef REVC
unread,
Made a PR for prucode0.p
Cosmetic / code clarity. Removed ifdef REVC nested inside a ifdef REVC
Mar 18
Zachary Hardesty (SuigintouLain)
, …
Joan Touzet
11
Mar 14
Emulation in an AT&T 3B2/310
I have a fix for the interrupt errors, it's been posted to GitHub as a PR: https://github.com/
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Emulation in an AT&T 3B2/310
I have a fix for the interrupt errors, it's been posted to GitHub as a PR: https://github.com/
Mar 14
David Waine
Feb 23
Anyone using the MFM board with an MVME320?
Hi, I am just starting out on a massive learning curve; trying to bring an MVME320 Disk Controller to
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Anyone using the MFM board with an MVME320?
Hi, I am just starting out on a massive learning curve; trying to bring an MVME320 Disk Controller to
Feb 23
Adam Billyard
, …
David Gesswein
19
Jan 23
Correcting LBA and --format
mfm_emu doesn't know anything about track layout. For most systems the low level format will
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Correcting LBA and --format
mfm_emu doesn't know anything about track layout. For most systems the low level format will
Jan 23
Adam Billyard
,
David Gesswein
2
Jan 22
adding a new decode format
Needed some changes. Updated file attached. This does not set the flag bytes on cylinder 0 like the
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adding a new decode format
Needed some changes. Updated file attached. This does not set the flag bytes on cylinder 0 like the
Jan 22
cro memcos
,
d...@pdp8online.com
6
12/31/23
open() for /sys/devices/platform/ocp/ocp:P8_11_pinmux/state failed, No such file or directory
I have put new images up. Misidentifying B as A is fixed and the occasional permission denied message
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open() for /sys/devices/platform/ocp/ocp:P8_11_pinmux/state failed, No such file or directory
I have put new images up. Misidentifying B as A is fixed and the occasional permission denied message
12/31/23
cro memcos
,
David Gesswein
3
12/31/23
About ESDI?
ESDI isn't possible to support with the current hardware. I looked at it when I started this
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About ESDI?
ESDI isn't possible to support with the current hardware. I looked at it when I started this
12/31/23
Adam Billyard
, …
nosn...@gmail.com
5
12/27/23
Uploaded new Uniflex 2.0 mfm image
Guys, I downloaded the emu file of the Tektronix 4400 UniFLEX image and used the MFM Emulator board
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Uploaded new Uniflex 2.0 mfm image
Guys, I downloaded the emu file of the Tektronix 4400 UniFLEX image and used the MFM Emulator board
12/27/23
d...@pdp8online.com
,
Ashlin Inwood
5
11/18/23
Board changes
Think its done. Bringing out the serial port or larger keepout around the mounting hold would require
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Board changes
Think its done. Bringing out the serial port or larger keepout around the mounting hold would require
11/18/23
Adam Billyard
, …
Al Kossow
6
11/16/23
Worth updating Beaglebone Linux for better FS performance?
Yes, 5.25 floppy on the left, 1304 HD on the right. Happy to take photos - let me know what you'd
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Worth updating Beaglebone Linux for better FS performance?
Yes, 5.25 floppy on the left, 1304 HD on the right. Happy to take photos - let me know what you'd
11/16/23
Per Mårtensson
,
David Gesswein
4
10/21/23
Konan David Junior II, 210 and 301
Code released. Thanks. Added 8 bit XOR for header check. Let me know if you find any issues. On Fri,
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Konan David Junior II, 210 and 301
Code released. Thanks. Added 8 bit XOR for header check. Let me know if you find any issues. On Fri,
10/21/23
Ashlin Inwood
, …
d...@pdp8online.com
14
10/14/23
MFM Drive Recovery Advice
Ok got it. In the latest version of the software Dmitry added configurable endianness, and that broke
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MFM Drive Recovery Advice
Ok got it. In the latest version of the software Dmitry added configurable endianness, and that broke
10/14/23
Ashlin Inwood
,
David Gesswein
3
10/14/23
Old OS NetworkManager 0.9.4.0 Set Static IP
Cool, I was able to find the correct syntax after a lot of trial and error It's done like so: [
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Old OS NetworkManager 0.9.4.0 Set Static IP
Cool, I was able to find the correct syntax after a lot of trial and error It's done like so: [
10/14/23
d...@pdp8online.com
10/1/23
Current Debian 11.7 image now available
Thanks to Joan Touzet pull request I now have current OS image available. Discussion of the
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Current Debian 11.7 image now available
Thanks to Joan Touzet pull request I now have current OS image available. Discussion of the
10/1/23
Al Kossow
, …
David Gesswein
7
9/29/23
Seagate ST-4096 microstepping mode FYI
Finally some actual details on what recovery does. Looks like 2/10's of a track is most it pulls
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Seagate ST-4096 microstepping mode FYI
Finally some actual details on what recovery does. Looks like 2/10's of a track is most it pulls
9/29/23
ich.c...@gmail.com
, …
Steve Mastrianni
8
9/20/23
Only RAW image for ST225 from a Philips P3500 TurboDOS system
More likely you are measuring across a semiconductor, a diode or a transistor junction. Switch the
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Only RAW image for ST225 from a Philips P3500 TurboDOS system
More likely you are measuring across a semiconductor, a diode or a transistor junction. Switch the
9/20/23
nosn...@gmail.com
, …
David Gesswein
10
9/15/23
Converting Al Kossow's UniFLEX disk image
David, Since I know where the fdn is supposed to start, and I found the root directory which is
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Converting Al Kossow's UniFLEX disk image
David, Since I know where the fdn is supposed to start, and I found the root directory which is
9/15/23
nosn...@gmail.com
9/13/23
Log file of converting Tektronix4404 from .emu to .dsk
Adam, Here is the console output from when I converted your .emu file to a .dsk extract file. It so
unread,
Log file of converting Tektronix4404 from .emu to .dsk
Adam, Here is the console output from when I converted your .emu file to a .dsk extract file. It so
9/13/23
Adam Billyard
, …
nosn...@gmail.com
24
9/13/23
Recommended archive for LKG pristine emufiles
Adam, I have posted an updated version of FloppyMaintenance to the web site and the SFTP site that
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Recommended archive for LKG pristine emufiles
Adam, I have posted an updated version of FloppyMaintenance to the web site and the SFTP site that
9/13/23
ich.c...@gmail.com
, …
David Gesswein
27
9/5/23
A TULIN TL226 harddisk from a Dimension 6800 system
For some weeks it will stay there: http://www.myoldc.info/upload/dimension-68000_tulin_mfmemu-
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A TULIN TL226 harddisk from a Dimension 6800 system
For some weeks it will stay there: http://www.myoldc.info/upload/dimension-68000_tulin_mfmemu-
9/5/23
Joan Touzet
2
7/20/23
PR submitted for Linux 5.10 / Debian Bullseye support
A quick update to let folks know that David has looked this over and thinks it looks fine, but is too
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PR submitted for Linux 5.10 / Debian Bullseye support
A quick update to let folks know that David has looked this over and thinks it looks fine, but is too
7/20/23
Tom Stepleton
,
d...@pdp8online.com
8
7/14/23
Preparing to microstep my Rodime RO202E
Curious if you managed to read the drive. Recovered a Seagate drive today that used 5 phase stepper
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Preparing to microstep my Rodime RO202E
Curious if you managed to read the drive. Recovered a Seagate drive today that used 5 phase stepper
7/14/23
e2k
, …
d...@pdp8online.com
8
7/11/23
RLL & ESDI
.ex files is a raw image of the disk for Unix folks equivalent to dd if=/dev/disk of=file.ex. This is
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RLL & ESDI
.ex files is a raw image of the disk for Unix folks equivalent to dd if=/dev/disk of=file.ex. This is
7/11/23