D.
Hardware Functional Description 65
Integrated Serial Communications Controller (ISCC) 65
Dual-Ported 32 Kbyte Random Access Memory 66
System Clock 66
Bit Latch Controller 66
EPROM 67
Status Buffers 67
E.
Software Functional Description 69
Initialization 69
External Interfaces 70
IOCTLs 72
Interrupts 74
Packet Transmission and Reception 75
Index 77
viii
SunHSI/S Installation and Administration Guide • November 1998
IBM Half-Duplex Mode 62
IBM Multi-Point Mode 63
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