Groups
Conversations
All groups and messages
Send feedback to Google
Help
Sign in
Groups
MFM Discuss
Conversations
About
MFM Discuss
1–30 of 96
This groups is for support and discussion of the MFM disk reader/emulator project
http://www.pdp8online.com/mfm.
Mark all as read
Report abusive group
0 selected
Jay Cotton
,
David Gesswein
2
Jun 28
MFM Emulator ready bit
The read line goes low when the drive is selected. Assuming your using --drive 1 P7 sets what drive
unread,
MFM Emulator ready bit
The read line goes low when the drive is selected. Assuming your using --drive 1 P7 sets what drive
Jun 28
John Dammeyer
,
David Gesswein
4
Jun 2
Glitch Count
On Thu, Jun 02, 2022 at 03:22:11PM -0700, John Dammeyer wrote: > Oh and I'm running the entire
unread,
Glitch Count
On Thu, Jun 02, 2022 at 03:22:11PM -0700, John Dammeyer wrote: > Oh and I'm running the entire
Jun 2
Forgotten Machines
, …
David Gesswein
9
May 31
Building ST506 to CDC "Finch" drive hardware interface
On Tue, May 31, 2022 at 01:01:25PM -0700, Forgotten Machines wrote: > Thanks for this insight,
unread,
Building ST506 to CDC "Finch" drive hardware interface
On Tue, May 31, 2022 at 01:01:25PM -0700, Forgotten Machines wrote: > Thanks for this insight,
May 31
Al Kossow
,
David Gesswein
2
May 3
acb 4000 bad block behavior
On Tue, May 03, 2022 at 12:54:22PM -0700, Al Kossow wrote: > I just read a quantum 540 that was
unread,
acb 4000 bad block behavior
On Tue, May 03, 2022 at 12:54:22PM -0700, Al Kossow wrote: > I just read a quantum 540 that was
May 3
ich.c...@gmail.com
,
David Gesswein
6
Apr 30
Formating error - Drive 0 Cyl X -> Y select 1, head 0 dirty f
On Sat, Apr 30, 2022 at 02:03:52PM -0700, ich.c...@gmail.com wrote: > Other case : > Just this
unread,
Formating error - Drive 0 Cyl X -> Y select 1, head 0 dirty f
On Sat, Apr 30, 2022 at 02:03:52PM -0700, ich.c...@gmail.com wrote: > Other case : > Just this
Apr 30
Marko Štamcar
,
Joan Touzet
4
Apr 27
Iskra Delta Triglav (Trident) computer [Slovenia/Yugoslavia] - MFM drives archived using this hardware
Hello Joan, thanks for making the MFM reader/emulator + prepared Beaglebone so easily available - our
unread,
Iskra Delta Triglav (Trident) computer [Slovenia/Yugoslavia] - MFM drives archived using this hardware
Hello Joan, thanks for making the MFM reader/emulator + prepared Beaglebone so easily available - our
Apr 27
Forgotten Machines
,
David Gesswein
2
Apr 12
Coaxing more sectors & tracks from a bad ST-251
On Tue, Apr 12, 2022 at 02:03:44AM -0700, Forgotten Machines wrote: > > ./mfm_util -I -t ../
unread,
Coaxing more sectors & tracks from a bad ST-251
On Tue, Apr 12, 2022 at 02:03:44AM -0700, Forgotten Machines wrote: > > ./mfm_util -I -t ../
Apr 12
Forgotten Machines
, …
Joan Touzet
5
Apr 10
Using the BBGW MicroSD card for direct-access emulation files
Looks good. On 2022-04-10 6:24 pm, Forgotten Machines wrote: Thank you both, David & Joan for
unread,
Using the BBGW MicroSD card for direct-access emulation files
Looks good. On 2022-04-10 6:24 pm, Forgotten Machines wrote: Thank you both, David & Joan for
Apr 10
Paul Devine
,
David Gesswein
5
Mar 12
Help with low level format on Victor 9000
Also, should have started with a HUGE thank you to David. Thanks so much for all your great work in
unread,
Help with low level format on Victor 9000
Also, should have started with a HUGE thank you to David. Thanks so much for all your great work in
Mar 12
Terry Fox
, …
David Gesswein
8
Feb 12
Using HDD emulator in a Kaypro 10?
On Sat, Jan 08, 2022 at 04:09:43PM -0800, Brian Jones wrote: > Can anyone that's used this
unread,
Using HDD emulator in a Kaypro 10?
On Sat, Jan 08, 2022 at 04:09:43PM -0800, Brian Jones wrote: > Can anyone that's used this
Feb 12
Per Mårtensson
, …
David Gesswein
30
Jan 28
Help with extract data from a Micropolis driver 1304
Hi david, Did actully got it to work. Post you later, but all is fine :-) Per fredag 28 januari 2022
unread,
Help with extract data from a Micropolis driver 1304
Hi david, Did actully got it to work. Post you later, but all is fine :-) Per fredag 28 januari 2022
Jan 28
Tom Stepleton
, …
Forgotten Machines
9
Jan 8
--ignore_seek_errors behaviour
A smart observation, I should have thought of that! But I've already ordered, and if I bought in
unread,
--ignore_seek_errors behaviour
A smart observation, I should have thought of that! But I've already ordered, and if I bought in
Jan 8
dave....@gmail.com
,
David Gesswein
3
12/31/21
Position of Regulator
Thanks for the prompt reply. Now for the testing... Dave G4UGM > -----Original Message----- >
unread,
Position of Regulator
Thanks for the prompt reply. Now for the testing... Dave G4UGM > -----Original Message----- >
12/31/21
Vladimir Romanov
, …
Forgotten Machines
7
12/29/21
MFM emulator - can't read disk
I tried different settings (default value is 50,4) --retries 100,8 --retries 200,16 No luck. I can
unread,
MFM emulator - can't read disk
I tried different settings (default value is 50,4) --retries 100,8 --retries 200,16 No luck. I can
12/29/21
Joan Touzet
,
David Gesswein
2
12/19/21
Un-analyzeable CDC drive image?
If you think you can take a crack at it http://www.pdp8online.com/mfm/revb/adding_new_formats.shtml
unread,
Un-analyzeable CDC drive image?
If you think you can take a crack at it http://www.pdp8online.com/mfm/revb/adding_new_formats.shtml
12/19/21
Tim Radde
, …
David Gesswein
16
12/15/21
Anyone try to analyze an ST-251 on a Decmate II?
If I had a spare drive to donate a board I might try it Don't want to risk messing up one of the
unread,
Anyone try to analyze an ST-251 on a Decmate II?
If I had a spare drive to donate a board I might try it Don't want to risk messing up one of the
12/15/21
Forgotten Machines
,
David Gesswein
5
12/13/21
C code that creates the data pulses
On Mon, Dec 13, 2021 at 09:25:39AM -0800, Forgotten Machines wrote: > David, > > Digging
unread,
C code that creates the data pulses
On Mon, Dec 13, 2021 at 09:25:39AM -0800, Forgotten Machines wrote: > David, > > Digging
12/13/21
PC-maniak
,
David Gesswein
21
11/16/21
MFM emulator - error trying to initialize
On Mon, Nov 15, 2021 at 05:12:35AM -0800, PC-maniak wrote: > I'm sorry I don't have any
unread,
MFM emulator - error trying to initialize
On Mon, Nov 15, 2021 at 05:12:35AM -0800, PC-maniak wrote: > I'm sorry I don't have any
11/16/21
Joan Touzet
10/31/21
Heads up on our (DECromancer's) latest units...
Hey there, we had a complaint from a customer regarding a boot loop situation on an MFM Emulator
unread,
Heads up on our (DECromancer's) latest units...
Hey there, we had a complaint from a customer regarding a boot loop situation on an MFM Emulator
10/31/21
Jos Dreesen
,
David Gesswein
8
10/31/21
Any chance for a Sage / Stride controller capability ?
Not yet tried opening the other disks, will be a task for a quiet December evening... BR Jos On Sun,
unread,
Any chance for a Sage / Stride controller capability ?
Not yet tried opening the other disks, will be a task for a quiet December evening... BR Jos On Sun,
10/31/21
geneb
,
David Gesswein
5
9/3/21
Need a format identified...
On Fri, 3 Sep 2021, David Gesswein wrote: > Got time to look at it. Format added Superbrain. >
unread,
Need a format identified...
On Fri, 3 Sep 2021, David Gesswein wrote: > Got time to look at it. Format added Superbrain. >
9/3/21
snhi...@gmail.com
,
d...@pdp8online.com
7
9/2/21
Missing format for ext2emu?
Sorry - I'm in the middle of a very busy period. Won't have time to address this until next
unread,
Missing format for ext2emu?
Sorry - I'm in the middle of a very busy period. Won't have time to address this until next
9/2/21
Convergent MightyFrame
,
ich.c...@gmail.com
2
8/31/21
Kudos to Adrian's Digital Basement...
Thanks ... I have a MFM Reader/emulator from David and it is often not easy to explain what it does
unread,
Kudos to Adrian's Digital Basement...
Thanks ... I have a MFM Reader/emulator from David and it is often not easy to explain what it does
8/31/21
snhi...@gmail.com
,
David Gesswein
4
8/7/21
Track length issue when emulating 2 drives
On Sat, Aug 07, 2021 at 01:10:07PM -0700, snhi...@gmail.com wrote: > So, the > problem is
unread,
Track length issue when emulating 2 drives
On Sat, Aug 07, 2021 at 01:10:07PM -0700, snhi...@gmail.com wrote: > So, the > problem is
8/7/21
cyb 2600
, …
Ethan Dicks
5
8/6/21
Problem with MFM Emulator and RQDX3
On Thu, Aug 5, 2021, 19:23 David Gesswein <djg@pdp8online.com> wrote: On Thu, Aug 05, 2021 at
unread,
Problem with MFM Emulator and RQDX3
On Thu, Aug 5, 2021, 19:23 David Gesswein <djg@pdp8online.com> wrote: On Thu, Aug 05, 2021 at
8/6/21
Terry Fox
, …
David Gesswein
4
7/29/21
How long to create a new blank hard drive image?
Thank you David! I was confused about it doing all the select messages. In addition, I forgot that
unread,
How long to create a new blank hard drive image?
Thank you David! I was confused about it doing all the select messages. In addition, I forgot that
7/29/21
Tim Radde
, …
Joan Touzet
9
7/26/21
Just got my assembled "blue" board with BB attached
Thanks, someone else pointed me to eBay. Guess I had not been searching for the right name. All I see
unread,
Just got my assembled "blue" board with BB attached
Thanks, someone else pointed me to eBay. Guess I had not been searching for the right name. All I see
7/26/21
Convergent MightyFrame
, …
Tim Radde
4
7/21/21
Black plastic Case for MFM Emulator/Reader
Just found this discussion. Downloaded both files to try each. Probably will use the non-faceplate.
unread,
Black plastic Case for MFM Emulator/Reader
Just found this discussion. Downloaded both files to try each. Probably will use the non-faceplate.
7/21/21
Al Kossow
5/18/21
hd samples project
@tubetimeus trying to figure out the format of an RLL disk he received prompted me to start working
unread,
hd samples project
@tubetimeus trying to figure out the format of an RLL disk he received prompted me to start working
5/18/21
cro memcos
, …
David Gesswein
16
5/18/21
Init Issue on Emulator Disks noticed on Cromemco
I just tested the --initialize=Cromemco option with your code level 237 No issues now, works
unread,
Init Issue on Emulator Disks noticed on Cromemco
I just tested the --initialize=Cromemco option with your code level 237 No issues now, works
5/18/21