Re: disk commands

[Alfred M. Szmidt]

   I see only read, read-compare and write commands are implemented in
   usim (disk.c).

   - Write all and Read all are only used for formatting the disk and
   verifying the format, and I guess it is not used at the moment, but
   on the original hardware, how did one format a disk ?

   - Recalibrate (and Fault clear?) are never issued now because never
   an error happens ? If an error is manually initiated (returning for
   example a seek error in status register), would a Recalibrate be
   issued ?

Very good questions, with no good answers.  I think that to format a
totally new disk pack you would need to load it with the DCFU ULOAD
microcode.  There is some code to "wipe" a disk.

But that assumes the disk drive etc is up.

In the basic case, to initialize a disk pack, you'd either access it
over network, or hook up the disk and then use EDIT-DISK-LABEL to set
it up.