Maxim Integrated High-Speed Microcontroller Users Guide: Network Microcontroller Supplement - Manual (Page 219)

infosendchar
The infosendchar function sends a character to the serial port 0. The DS80C400 silicon software version of this function accesses the
serial loader pin (P1.7) and does nothing if this pin is in the logic-low state. The DS80C400 silicon software does not use interrupt-dri-
ven I/O to the serial port.
IPchecksum
The IPchecksum function calculates the IP checksum for an IP packet. The DS80C400 silicon software version of this function does
not use the checksum accelerator feature of the DS80C400.
getMACID
The getMACID function reads the MAC ID and stores it in the MAC_ID variable (a MAC_ID pointer is given in the ROM export table). The
DS80C400 silicon software version of this function accesses the 1-Wire port and searches for a DS2502-E48 1-Wire chip containing the MAC
ID.
underef
Resolves a physical address into a memory handle. This function undereferences an absolute address and returns a memory handle.
userIOpoll
Allows extension of the WOS_IOPoll mechanism. This function is called on every WOS_IOPoll, i.e., driven by the timer when no inter-
rupts are active. A user could add housekeeping functions, for example. The default implementation of this function does nothing.
errornotification
Provides a means for notification when an error occurs. This function is called when the system error occurs, e.g., not having enough
memory. The list of error causes/reasons currently defined within the ROM is given below. The default implementation of this function
does nothing; however, a user implementation might print an error message or reset the system.
Error Cause Value Description
ERROR_KMEM 0 Kernel memory exhausted
ERROR_MRM 1 Heap memory exhausted
ERROR_TCP_MEM 2 TCP detected low memory
ERROR_TCP_RESEND 3 TCP packet has to be resent
ERROR_KFREE_FAIL 4 Attempt to free a kernel memory block failed
ERROR_FREE_NULL 5 Attempt to free a NULL pointer
ERROR_FREE_DEREF 6 Could not dereference a memory handle on free
INPUT DESCRIPTION OUTPUT DESCRIPTION
ACC Value for a given error cause —
INPUT DESCRIPTION OUTPUT DESCRIPTION
— —
INPUT DESCRIPTION OUTPUT DESCRIPTION
DPTR0 pointer to memory block
ACC
R3:R2
(destroyed)
blockhandle
INPUT DESCRIPTION OUTPUT DESCRIPTION
— ACC Success (= 00h) or failure code
INPUT DESCRIPTION OUTPUT DESCRIPTION
DPTR0
R5:R4
Pointer to data buffer
Size of data buffer
R1:R0 Checksum
INPUT DESCRIPTION OUTPUT DESCRIPTION
ACC Character to send —
High-Speed Microcontroller User’s
Guide: Network Microcontroller
Supplement
219
Maxim Integrated