PROM_RMW(2spp)
NAME
prom_rmw − perform VME bus read-modify-write cycles
SYNOPSIS
#include <prom/entrypt.h>
orb_rmw(address, bits)
orh_rmw(address, bits)
orw_rmw(address, bits)
andb_rmw(address, bits)
andh_rmw(address, bits)
andw_rmw(address, bits)
DESCRIPTION
These routines perform VME bus read-modify-write cycles. The routines bitwise and’s or bitwise or’s of the contents of the location address and bits. The ’b’, ’h’, and ’w’ indicate if address is referenced as a byte, halfword, or word, respectively.
RETURNS
These routines return the original contents of the location address.