James F Smith wrote:
That doesn't look right, but please consider my bad memory. But wasn't the
track capacity for a 3380 - 47476???
you are talking about the largest formated record w/o key.
if you look at the calculation, a keyless record required adding 12
bytes and rounded up to multiple of 32bytes and then adding 480 to
calculate how much of raw track capacity a formated record took.
so single formated record 47476 and adding 12 = 47488
by chance is multiple of 32
and 47488+480 = 47968
47968 is the raw, unformated track capacity.
each formated record has overhead, as per the calculation.
re:
http://www.garlic.com/~lynn/2006m.html#5 track capacity
i've done q&d conversion of the old gcard ios3270 to html.
http://www.garlic.com/~lynn/gcard.html
it has record size calculations ... but it predated 3390 ... so only has
up thru 3380
http://www.garlic.com/~lynn/gcard.html#26.3
from above
Track Record Size
Device Capacity Without key With key
3375 36000 224+#(D+191) 224+#(K+191)+#(D+191)
3380 47968 480+#(D+12) 704+#(K+12)+#(D+12)
Device Capacity Without key With key
Notes: D is data length, K is key length
# means round up to multiple of 32
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