Octagon PC-500, User Manual

Page: 135 / 233

18-8
Serial EEPROM and CMOS RAM PC-500 user’s manual
Error Code Meaning
ffh
Unknown error
01h Function not implemented
02h Defective serial EEPROM
03h Illegal access
Comments: This function copies the contents of the serial
EEPROM to extended CMOS RAM. The extended
CMOS can now be read/written using the 06 and 07
functions.
Programming example:
/* Copies contents of serial EEPROM to extended
CMOS RAM */
/* Inline assembly code for Borland C++ 3.1 */
asm {
mov
ax,0fb09h
mov dx,0ffffh
int 17h
}
Copy contents of extended CMOS RAM to serial EEPROM
Function: fbh
Subfunction: 0Ah
Purpose: To copy contents of the current extended CMOS
RAM data to the serial EEPROM.
Calling registers: AH fbh
AL 0Ah
DX ffffh
Return registers: Carry flag cleared if successful
Carry flag set if error
AL
Error code
Error Code Meaning
ffh
Unknown error
01h Function not implemented
02h Defective serial EEPROM
03h Illegal access
Comments: This function copies the contents of the extended
CMOS RAM to serial EEPROM. Use the 09 function
to retrieve the contents.
Programming example:
/* Copies contents of the extended CMOS RAM to
serial EEPROM */
/* Inline assembly code for Borland C++ 3.1 */
asm {
mov
ax,0fb0Ah
mov dx,0ffffh
int 17h
}