contain a zero, the value 00000000 bina­
ry, or 00 hex, is meant, and not the
value for an EBCDIC character "0," which
would be FO hex. OTHER PUBLICATIONS The channel-to-channel adapter is
described in the pUblication IBM Channel-to-Channel Adapter, SA22-7091-.-- The I/O interface is
pUblication IBM
described in System/360 the
and System/370 I/O Interface Channel to Control Unit Original Equipment Manufac­
turers' Information, GA22-6974.
Mathematical assists are described in
the publication IBM System/370 Mathemat­
ical Assists, SA22-7094, which describes the i nstructi ons ARCTANGENT, LOGARITHM, COSINE, EXPONENTIAL, MULTIPLY
AND ADD, NATURAL LOGARITHM, RAISE TO POWER, SINE, and SQUARE ROOT. Vector operations are described in the
publication IBM System/370 Vector Oper­ ations, SA22-7125. y

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