Monday, May 30, 2022

Let's Explore the Amiga A1020 5.25" Floppy Drive - Episode 125

 This week on 10 Minute Amiga Retro Cast I am looking at the Amiga A1020 5.25" Floppy Drive I purchased at AmiWest in 2021. This handsome little guy is really made to be used with an Amiga Bridgeboard like the A2088, A2286 or A2386 as an external PC drive, but also works just fine as a 440KB Amiga Floppy drive! Join me as I show you how to connect one to your Amiga using the Mountlist options and we fix it and get it working!

Here are the scripts you need for Amiga OS 1.x Mountlist, or Amiga OS 2.x and 3.x in the DEVS:/DOSDRIVERS folder.

Mountlist sample (1.3 style)


/* Mount a 5.25" disk drive to be mounted as DF1: */


DF1:       Device = trackdisk.device

           Unit   = 1 /* first external unit */

           Flags  = 1 /* important ! */

           Surfaces  = 2

           BlocksPerTrack = 11

           Reserved = 2

           Interleave = 0

           LowCyl = 0  ;  HighCyl = 39

           Buffers = 20

           BufMemType = 1 /* or 3 if you run OS 1.x */

#


Dosdriver form (2.x/3.x style)


           Device = trackdisk.device

           Unit   = 1 /* first external unit */

           Flags  = 1 /* important ! */

           Surfaces  = 2

           BlocksPerTrack = 11

           Reserved = 2

           Interleave = 0

           LowCyl = 0  ;  HighCyl = 39

           Buffers = 20

           BufMemType = 1 /* or 3 if you run OS 1.x */




Simply save it as DF1 (or A1020 if you prefer) in your Dosdrivers directory (generally in Sys:storage). Open a shell and try mount df1: (or A1020:) !

According to (french programmer) Etienne Vogt, the important thing is to set Flags=1 (tells the trackdisk.device that you really want to mount a 40 track drive, else it will ignore it)

Info from BigDan in the Amiga.org forums. Thanks!

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