Octagon PC-600, Reference Manual

Page: 107 / 153

BX Word address (zero based)
CX Word count
DX ffffh
ES:DI Destination pointer
Return registers: Carry flag cleared if successful
AX Word read
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 reads multiple words from the
user area of the serial EEPROM.
Programming example:
/* Read 10 words starting at word 5 */
unsigned int far *seeDataPtr = new unsigned int[10];
/* Allocate storage*/
/* Inline assembly code for Borland C++ 3.1 */
asm {
mov
ax,0fc02h
mov bx,05h /* Read starts at
word 5 */
mov cx,10 /* Read 10 words */
mov dx,0ffffh
les di,seeDataPtr
int 17h
}
Write multiple words to the serial EEPROM
Function: fch
Subfunction: 03h
Purpose: To write multiple words to the on–board serial
EEPROM.
Calling registers: AH fch
AL 03h
BX Word address (zero based)
CX Word count
DX ffffh
DS:SI Source pointer
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 writes multiple words to the
user area of the serial EEPROM.
Programming example:
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