Success! I’ve got my utility reading AND writing TPDD2 disk images with the sector access commands. I’ve got a bit of cleanup and testing left to do and then I’ll put it in the members area.
Kurt From: M100 [mailto:m100-boun...@lists.bitchin100.com] On Behalf Of Kurt McCullum Sent: Tuesday, August 22, 2017 5:38 AM To: m...@bitchin100.com Subject: Re: [M100] Utility disk image from sector access When you turn the TPDD2 on while you are in basic with the following code: 10 RUN”COM:98N1ENN” The TPDD2 sends a small basic program over. That program does a quick poke command to determine if a 200 or 100/102 is running and then calls for the appropriate loader code to be sent. The end result is FLOPPY.CO on either type of machine. From: M100 [mailto:m100-boun...@lists.bitchin100.com] On Behalf Of Brian White Sent: Monday, August 21, 2017 8:51 PM To: m...@bitchin100.com <mailto:m...@bitchin100.com> Subject: Re: [M100] Utility disk image from sector access Oh now that is evil. It silently/transparently delivers different data for the same filenames, depending on if it's plugged in to a 100/102 vs a 200? EVIL On Sun, Aug 20, 2017 at 11:50 PM, Kurt McCullum <kurt.mccul...@att.net <mailto:kurt.mccul...@att.net> > wrote: I’m halfway there. I was able to create an image of the Utility Disk by reading every sector with the Windows utility I’m working on. I deviated a bit from the backup program that is on the disk. That program only copies the sectors that have data. It does this by analyzing each sector. I went for a more brute force approach and decided to copy every sector even if they are blank. I tried to read the data in 256 byte packets but the drive didn’t seem to be happy with it. I may try larger packets again but for now each sector is read 64 bytes at a time just as the backup/floppy.co <http://floppy.co> software uses. The image is interesting. There are two basic program listings which are not tokenized. One for the 100 and the other for the 200. Then there is the actual code for floppy.co <http://floppy.co> for the 100 and another for the 200. No I have to figure out how to write it back to a blank disk……….. Kurt
