WPCREDIT tweaks for the A64

[tictac]

that was fast

and where do i set the data bits, i want to? is this the XXXXXXXX value in your code?

what's the last line of your code (last bit) - do i have to replace it with cheksum or leave it as it is?

here is example of my ISA rom source code... i use it on my NF7S modded bios

You just need to change the address & data for your patch ( i bold it on my source code

Good luck

; ------------------- sys_patch.asm ---------------------------------------------------
.486p

CSEG	SEGMENT PARA PUBLIC USE16 'CODE'
	ASSUME CS:CSEG
	ORG 0

;Expansion rom header
	db  55h   ;;Rom signature byte 1
    	db  0AAh  ;;Rom signature byte 2
	db  01h   ;;512 bytes
	jmp INIT  ;;jump to initialization
    	

; equates, have been tested and works fine

	address		equ 0cf8h
	data		equ 0cfch
	
	a_add   	equ 08000006Ch 	; Bus 0 Device 0 Function 0 Offset 6Ch (CPU Disconnect Function)
	a_data    	equ 0fff1ffffh	
			
	ORG 100h

SENDER	PROC	 NEAR
; Active comunication with address
	mov dx,address
	out dx,eax
	ret
SENDER	ENDP

RECEIVER	PROC	NEAR
; Comunicate with the address & receive the data
	mov dx,address
	out dx,eax
	mov dx,data
	in eax,dx
	ret
RECEIVER	ENDP

TUNER1	PROC	NEAR
; Sending new data at ebx to the address
	xchg eax,ebx
	out dx,eax
	xchg eax,ebx
	ret
TUNER1		ENDP

TUNER2	PROC	NEAR
; Increase data 
	or eax,ebx
	out dx,eax
	ret
TUNER2		ENDP

TUNER3	PROC	NEAR
; Decrease data
	and eax,ebx
	out dx,eax
	ret
TUNER3		ENDP
	
INIT	PROC	NEAR

; save all register that will be affected by our code
	push eax
	push ebx
	push edx
	pushfd

; CPU Disconnect Function
	mov eax,a_add
	mov ebx,a_data
	call RECEIVER
	call TUNER3

; Restore register contents and return to system bios file
	popfd
	pop edx
	pop ebx
	pop eax

INIT	ENDP

	ORG 200h

CSEG	ENDS	
		END		

; -------------------------- END OF sys_patch.asm -------------------------------------------