Artesyn BajaPPC-750, User Manual

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10-56 BajaPPC-750: Monitor
May 2002
struct Fifo {
unsigned char *Top;
unsigned char *Bottom;
int Length;
unsigned char *Front;
unsigned char *Rear;
int Count;
} Fifo;
The function InitFifo initializes the FIFO control structure specified by FPtr
to use the unsigned character buffer starting at StartAddr that is of size Length .
The function ToFifo writes the byte c to the specified FIFO. This function
returns TRUE if there is room in the FIFO (before adding c to the FIFO), or
FALSE if the FIFO is full.
The function FromFifo reads a byte from the specified FIFO. If a character is
available, it is written to the address specified by the pointer Ptr and the func-
tion returns TRUE. If no character is available, the function returns FALSE.
10.15.10 Initialize Ethernet Address
SYNOPSIS
void ConfigEthernet(int serialnum)
DESCRIPTION
The function ConfigEthernet sets the Ethernet address of the board. It com-
bines the decimal serial number with the company code and product ID to
form the 6-byte address. When prompted, select the appropriate product
name to configure the corresponding ID in the ethernet address. The
Ether-
netAddr command displays the current address.
10.15.11 Interrupts
SYNOPSIS
void maskints(void)
void unmaskints(void)
DESCRIPTION
The functions unmaskints and maskints are used to enable and disable
external interrupts at the processor.