-
Recent Posts
Recent Comments
Archives
- April 2022
- March 2022
- February 2022
- January 2022
- December 2021
- November 2021
- October 2021
- September 2021
- July 2021
- May 2021
- April 2021
- March 2021
- February 2021
- January 2021
- December 2020
- November 2020
- October 2020
- September 2020
- August 2020
- July 2020
- June 2020
- May 2020
- April 2020
- February 2020
- January 2020
- December 2019
- November 2019
- October 2019
- September 2019
- August 2019
- July 2019
- June 2019
- April 2019
- March 2019
- January 2019
- December 2018
- November 2018
- October 2018
- September 2018
- August 2018
- July 2018
- May 2018
- April 2018
- March 2018
- February 2018
- January 2018
- December 2017
- November 2017
- October 2017
- September 2017
- August 2017
- July 2017
- June 2017
- May 2017
- April 2017
- March 2017
- February 2017
- January 2017
- December 2016
- November 2016
- October 2016
- September 2016
- August 2016
- July 2016
- June 2016
- May 2016
- April 2016
- March 2016
- February 2016
- January 2016
- December 2015
- November 2015
- October 2015
- September 2015
- August 2015
- July 2015
- June 2015
- May 2015
- April 2015
- March 2015
- February 2015
- January 2015
- December 2014
- October 2014
- September 2014
- June 2014
- May 2014
- April 2014
- March 2014
- February 2014
- January 2014
- December 2013
- November 2013
- October 2013
- September 2013
- August 2013
- July 2013
- June 2013
- May 2013
- April 2013
- March 2013
- February 2013
- January 2013
- December 2012
- November 2012
- October 2012
- September 2012
- August 2012
- July 2012
- June 2012
- March 2012
- February 2012
- December 2011
- November 2011
- October 2011
- September 2011
- August 2011
- July 2011
- June 2011
- May 2011
- April 2011
Categories
Meta
Tag Archives: IEC
IECHost: testing whole track dumping
While working at disk nibbling, I also creates a branch in the IECHost firmware and software repos in order to implement one long standing feature: whole track dumping. A whole track can now be dumped very quickly instead of being … Continue reading
Posted in Retrocomputing, Technical
Tagged Commodore 64, Disk drives, dumping, IEC, IECHost, preservation
Leave a comment
IECHost track nibbling with a 1571 drive: first test done!
Today I implemented the protocol to transfer a whole track with IECHost using the SRQ line of a 1571 disk drive. Compared to the test pattern and drive code echo transfers, the transfer of track data is quite time-critical so … Continue reading
Posted in Retrocomputing, Reverse Engineering, Technical
Tagged 1571, Commodore 128, Disk drives, dumping, IEC, IECHost, nibbling, preservation
1 Comment
IECHost: killer track generation code completed
As I plan to generate killer tracks for testing purposes in future, I added a command to IECHost to create killer tracks on demand 🙂The drive code side of such command is as per below: So I can now create … Continue reading
Posted in Retrocomputing, Reverse Engineering, Technical
Tagged 1571, Commodore 128, Disk drives, dumping, IEC, IECHost, nibbling, preservation
Leave a comment
IECHost disk nibbling with a 1571 drive: killer track detection
As I am exploring the 1571 drive code from Nibtools, I am implementing various commands within the IECHost firmware. The ones with a comment next to them are those I tested and played around with so far: Today I decided … Continue reading
Posted in Retrocomputing, Reverse Engineering, Technical
Tagged 1571, Commodore 128, Disk drives, dumping, IEC, IECHost, nibbling, preservation
Leave a comment
IECHost: yet another feature coming for its GUI client
Yet another tiny update to the IECHost GUI client: in the main window, the tooltip for a sector is going to also display what file the sector belongs to, if appropriate. Example below: I am going to push a few … Continue reading
Posted in Retrocomputing, Technical
Tagged Commodore 64, disks, dumping, IEC, IECHost, preservation, software
Leave a comment
Progress with the IECHost disk nibbling process using a 1571 drive
Today I made yet another modification to the IECHost firmware, in order to implement the protocol used to communicate with the nibbling code that’s part of Nibtools. Such code is uploaded to and runs in a 1571 drive’s RAM, accepting … Continue reading
Posted in Retrocomputing, Reverse Engineering, Technical
Tagged 1571, Commodore 128, Disk drives, dumping, IEC, IECHost, nibbling, preservation
Leave a comment
Whole track transfer with a 1571 floppy disk drive
After a few busy days at work and a few days out of action due to back and neck pain, I decided to arrange a setup for running Nibtools and d2d64. The first thing I had to do was to … Continue reading
Posted in Retrocomputing, Reverse Engineering, Technical
Tagged 1571, Commodore 128, Disk drives, dumping, IEC, IECHost, preservation
Leave a comment
Support for another burst command added in IECHost
This morning I added support for reading the burst INTERLEAVE value out of a 1571 drive and expanded support of the burst READ command to read multiple sectors. The former returns the soft interleave value used by the 1571 to … Continue reading
Posted in Retrocomputing, Reverse Engineering, Technical
Tagged 1571, Commodore 128, Disk drives, dumping, IEC, IECHost, preservation
2 Comments
Two more burst commands implemented in IECHost
Today I was reading a bit about the Burst Command Instruction Set (BCIS) as documented in Commodore’s official user’s guide for 1570/1571 drives. I was intrigued by the lack of details within the documentation so I implemented two more burst … Continue reading
Posted in Retrocomputing, Reverse Engineering, Technical
Tagged 1571, Commodore 128, Disk drives, dumping, IEC, IECHost, preservation
1 Comment
A few notes re 1571
The 1571 ROM I am studying suggests that Commodore included a disk copy routine (perhaps taken directly from the 4040?) that they were probably going to enable again for the 1572 drive (dual-drive version of the 1571). Such routine is … Continue reading
Posted in Retrocomputing, Reverse Engineering, Technical
Tagged 1571, Burst mode, Commodore 128, fast serial, IEC
2 Comments