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pkimpel / retro-b5500

Web-based emulator and operating environment for the Burroughs B5500 computer system.
http://www.phkimpel.us/B5500/
MIT License
76 stars 7 forks source link

SPO CD command crashes emulator #11

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
Entering the CD command on the SPO appears to crash the emulator. This has been 
tried and observed only using the SyllableDebugger thus far. Reloading the 
SyllableDebugger in the browser with F5 and restarting the MCP appears to work, 
but typically get a DKA(R) DISK FAILURE-D21 (EU not ready) error message 
shortly after that. Completely exiting the browser and starting from scratch 
appears to clear the error, and the disk data does not appear to be damaged.

Original issue reported on code.google.com by paul.kimpel@digm.com on 24 Mar 2013 at 10:19

GoogleCodeExporter commented 9 years ago 
No longer happens. Pseudoreaders now appear to work fine.

Believe this was caused by B5500ColdLoader.html not clearing out some disk 
sectors probably left over from the switch from binary- to alpha-mode disk I/O.

Original comment by paul.kimpel@digm.com on 6 Jul 2013 at 11:54

GoogleCodeExporter commented 9 years ago 
Confirmed.

Original comment by paul.kimpel@digm.com on 29 Dec 2013 at 4:33