[Coladam] TDOS boots

Ronald Mitchell bytehacker at tallcedarskennels.com
Sun Feb 21 03:47:20 CET 2010

I've put a couple of TDOS boot images up on my Skydrive, for those who  
want to use TDOS on the ADAM emulator. The 160 k image should run as  
it, and the 1.44 Meg image needs conversion for sectors per track and  
interleave using your preferred method. (either Virtual ADAM or  

You should be able to access these disk images at:


Since this is the first time I've put anything up there for download  
by others, I'd appreciate knowing whether or not the downloads  
actually work.

The 160 K disk image sets up TDOS for use with single sided 160K  
floppies only. Drives A B C and D are all set the same.

The 1.44 Meg disk image sets up TDOS with drives as follows:

A: -  1.4 Meg High Density

B: -  Single sided 160K floppy (less system tracks)

C: -  720 k floppy

D: - 254 K TDOS format

Using the program DSKSZ.COM  you can reset these initial sizes to  
anything you want.

It's been my experience that if you're going to use either the 720K or  
the 1.4 Meg sizes,  for a new floppy disk image, you first need to use  
the program FLSHDIR.COM to properly initialize the directory.  
Otherwise you get a bunch of gibberish when you type the DIR command.

All of this hopefully will provide yet another method for moving TDOS  
files from the CD or some other source into your ADAMEM directory area  
and onto the emulator.  There you can prepare a fresh EOS disk image,  
format it, initialize it, and then write your TDOS files to it. Then,  
by booting either of theTDOS images provided as disk A, and specifying  
your EOS disk image as disk B, you can run the TDOS program FC.COM  
which will read your EOS disk and allow you to copy individual files  
from EOS to TDOS.  Any further explanation at this point would  
probably take more pages than you'd care to read.  I'll provide  
further step by step detail to those who are interested once I know  
that these two disk images will actually boot on someone else's ADAMEM  


Ron Mitchell

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