4.1 BSD mkfs(8) for an RA81?

[Mark Crispin]

     The "size" paramater you referred to doesn't look like
anything in kilobytes or megabytes.  But for comparitive
purposes, here's what disk parameters are for various kinds of
disks, as seen by TOPS-20:

Disk	RECSIZ TRKSIZ CYLSIZ  DSKSIZ

RP04	   128	  20	  19	 400
RP06	   128	  20	  19	 800
RP07	   128	  43	  32	 629
RM03	   128	  30	   5	 820
RA80	   512	   7	  28	 273
RA81	   512	 161	   1	 128	
RA60	   512	  38	   1	2382

RECSIZ := number of 36-bit words/record
TRKSIZ := number of records in a track
CYLSIZ := number of tracks/cylinder (number of surfaces)
DSKSIZ := number of cylinders
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