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Forum Index : Microcontroller and PC projects : CMM2 Floppy Drive, Is it possible?

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Vampire05
Regular Member

Joined: 06/12/2020
Location: Germany
Posts: 88
Posted: 04:20pm 27 Jul 2021
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Ok, thank you guys for the information!

Today i finished the case for my external CMM2 Floppy Drive: Here some Pics:






The next Step is to mount an IDE (40 Pin) Connector on the backside for the CMM2 Connection.
Edited 2021-07-28 02:21 by Vampire05
 
Kingeorg
Newbie

Joined: 28/12/2020
Location: United States
Posts: 11
Posted: 05:13pm 27 Jul 2021
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Wow. That looks ROBUST!
 
Vampire05
Regular Member

Joined: 06/12/2020
Location: Germany
Posts: 88
Posted: 05:18pm 27 Jul 2021
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these wooden panels and aluminuim sheets are the only material i have lying around here.
 
Mixtel90

Guru

Joined: 05/10/2019
Location: United Kingdom
Posts: 5707
Posted: 06:23pm 27 Jul 2021
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It won't blow off the table anyway. :)
Actually, I think it looks really neat. Your cutting and assembly look very precise.
Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs
 
Volhout
Guru

Joined: 05/03/2018
Location: Netherlands
Posts: 3496
Posted: 06:36pm 27 Jul 2021
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Good work Vampire05,

It won't be long before we hear the buzzing and sizzling of the floppy....
I remember the excitement when my old Acorn Atom was reading disks with a home-brew disk interface (5 1/4 back then). The 160k back ten was sufficient for 20-50 programs. Good that we have 1.44Mb now with the CMM2.

Volhout
Edited 2021-07-28 04:38 by Volhout
PicomiteVGA PETSCII ROBOTS
 
Vampire05
Regular Member

Joined: 06/12/2020
Location: Germany
Posts: 88
Posted: 06:42pm 27 Jul 2021
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Thank you guys, i will keep you up to date  
 
Vampire05
Regular Member

Joined: 06/12/2020
Location: Germany
Posts: 88
Posted: 10:50am 02 Aug 2021
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hi Guys,
i have some problems with the xmodem transfer. here is the full basic file

floppy.bas.zip

the simple commands(dir, type, dump, rmdir, mkdir) works great but the xmodem command did not.

what i do:

i open the serial connection

open "com1:115200, 256, get_floppy_output, 1" as #1


then i send the arduino dos command:

print #1, "receive " + args(2)


and then the xmodem send on cmm2:

xmodem send "floppy.bas", #1


i tried also
xmodem send "floppy.bas",1

xmodem send "floppy.bas"


after longer waiting i see the empty file specified in args(2) is created on the floppy drive with the size 0. The cmm2 says "Remote did not respond".

Any ideas how i can debug this problem?
 
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