[Coco] Format D2 80dd

[Barry Nelson]

I noticed you said floppy "image". I am guessing that you are formatting either a floppy image on an emulator such as VCC, or an image mounted on a DriveWire server. I will outline the procedure for these cases below. To format a real 80 track double sided floppy, you would use slightly different options so that that controller would do a low level track and sector format. That is not required or desirable on an emulator or DriveWire. These instructions are also written for NitrOS9. Microware OS-9 is slightly different.

At the prompt to format /d2 as an 80 track double sided image, do this:
dmode /d2 sid=2 cyl=50 sct=18 t0s=18 typ=20 dns=2
format /d2 R L 2 '80'
      NitrOS-9 RBF Disk Formatter
------------  Format Data  ------------

      Floppy Disk Format: CoCo
    Physical floppy size: 5 1/4"
           Sectors/track: 18
     Track zero sect/trk: 18
Total physical cylinders: 80
            Track Offset: 0
           Sector Offset: 1
 Minimum sect allocation: 8
        Recording format: MFM
    Track density in TPI: 96
Number of log. cylinders: 80
      Number of surfaces: 2
Sector interleave offset: 3

Formatting device: /d2
Disk name: Enter the disk name here
009F
Number of good sectors: $000B40

Your disk image is now formatted and ready to use with NitrOS9. It will have a capacity of 720K.


> Plt at freemail2.com plt at freemail2.com 
> Sun Sep 27 22:13:20 EDT 2015
> Do you mean démode /d2 and what setting should it be please?
> 
> 
> Phil Taylor