Where to find I2C c examples for philips 89c669

Hi!
Can anybody tell me where i can find some i2c examples for philips 89c669.I have some examples for 89c668.But I still can not run it in my 89c669 system.
I change my rtxconf.a51(make a new type 22) as below:

.
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ELSEIF (?RTX_CPU_TYPE = 22)
;***********
;* Type 22 *
;***********
;------------------------------------------------------------------
; Define the number and addresses of the interrupt enable registers
; Philips 89c669 -> 2 interrupt enable register
; (Set the not used registers to the same address as ?RTX_IE)

INT_EN_MASK_NUMBER EQU 2
?RTX_IE DATA 0A8H
?RTX_IEN1 DATA 0E8H
?RTX_IEN2 DATA 0A8H ; not used

;------------------------------------------------------------------
; Generate the interrupt entry points supported by the peripherals
; of the selected CPU type.
IF (?RTX_SYSTEM_TIMER = 0)
; Do NOT include the Timer 0 Vector (INT-1)
INT_ENTRY 0
INT_ENTRY 2
INT_ENTRY 3
INT_ENTRY 4
INT_ENTRY 5
INT_ENTRY 6
INT_ENTRY 7
INT_ENTRY 8
INT_ENTRY 10
INT_ENTRY 11

ELSEIF (?RTX_SYSTEM_TIMER = 1)
; Do NOT include the Timer 1 Vector (INT-3)
INT_ENTRY 0
INT_ENTRY 1
INT_ENTRY 2
INT_ENTRY 4
INT_ENTRY 5
INT_ENTRY 6
INT_ENTRY 7
INT_ENTRY 8
INT_ENTRY 10
INT_ENTRY 11

ELSEIF (?RTX_SYSTEM_TIMER = 2)
; Do NOT include the Timer 2 Vector (INT-5)
INT_ENTRY 0
INT_ENTRY 1
INT_ENTRY 2
INT_ENTRY 3
INT_ENTRY 4
INT_ENTRY 6
INT_ENTRY 7
INT_ENTRY 8
INT_ENTRY 10
INT_ENTRY 11

ENDIF

;------------------------------------------------------------------
; The following table attaches the interrupt numbers (0..31) to the
; corresponding bits in the interrupt enable masks of the specific
; processor.
; All three interrupt enable register contents must be defined
; for every interrupt number (even when the specific processor contains
; only one interrupt mask).
; Syntax: DB IE-content, IE1-content, IE2-content
;
?RTX?RTX_INT_TO_BIT_TABLE?RTXCONF SEGMENT CODE
RSEG ?RTX?RTX_INT_TO_BIT_TABLE?RTXCONF

?RTX_INT_TO_BIT_TABLE_BASE:
DB 01H, 00H, 00H ; INT_0
DB 02H, 00H, 00H ; INT_1
DB 04H, 00H, 00H ; INT_2
DB 08H, 00H, 00H ; INT_3
DB 10H, 00H, 00H ; INT_4
DB 20H, 00H, 00H ; INT_5
DB 40H, 00H, 00H ; INT_6
DB 00H, 02H, 00H ; INT_7
DB 00H, 04H, 00H ; INT_8
DB 00H, 00H, 00H ; no used
DB 00H, 01H, 00H ; INT_10 (Ser 1)
DB 00H, 10H, 00H ; INT_11 (i2c)
; (*) PFI (power fail interrupt): not supported by RTX as task
; interrupt. May be used by C51 interrupt functions only.
;------------------------------------------------------------------
; Define the greatest supported interrupt number
?RTX_MAX_INT_NBR EQU 11

PCON DATA 87H

ENTER_IDLE MACRO
;;
;; Enter Idle Mode
;; ---------------
;; Not supported by all 8051 type processors (see manufacturer's
;; data sheet !)
;; To be used whenever entering idle state.
;;
ORL PCON, #01H ; Set idle mode (leave by interrupt)
; (peripherals stay active)
ENDM

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