Charles Mills wrote:
> "all disks since dinosaurs roamed the Earth." Heck, it's got the 2311 and
> 2305. (That should be enough start up another one of those darned mainframe
> nostalgia threads.)

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

3390 track capacity is listed as 56,664

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