This is displayRegisters.h in view mode; [Download] [Up]
/* Copyright (c) 1992 NeXT Computer, Inc. All rights reserved. * * displayRegisters.h - i386-specific register helpers * * * HISTORY * 03 Aug 93 Scott Forstall * Created. */ #import <driverkit/i386/ioPorts.h> static inline unsigned char IOReadRegister( IOEISAPortAddress port, unsigned char index) /* Description: Read register at port and index. Return the*/ /* current value of the register.*/ { outb(port, index); return(inb(port + 1)); } static inline void IOWriteRegister( IOEISAPortAddress port, unsigned char index, unsigned char value) /* Description: Write value to register at port and index.*/ { outb(port, index); outb(port + 1, value); } static inline void IOReadModifyWriteRegister( IOEISAPortAddress port, unsigned char index, unsigned char protect, unsigned char value) /* Description: Read-modify-write.*/ /* Read register at port and index. Change value while*/ /* retaining protect bits.*/ { unsigned char val = IOReadRegister(port, index); IOWriteRegister(port, index, (val & protect) | value); }
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.