descript.asm

This example implements a gameport translator on the PIC16C765. The firmware translates a gaming d

	pagesel	langid_index
	call	langid_index
	movwf	temp2
	incf	temp, f
	pagesel	langid_index
	call	langid_index
	movwf	temp
	
	movf	temp, w
	movwf	PCLATH
	movf	temp2,w
	addwf	EP0_start+1,w
	btfsc	STATUS,C
	incf	PCLATH, f
	movwf	PCL

langid_index
	movlw	high langids
	movwf	PCLATH
	movlw	low langids
	addwf	temp, w
	btfsc	STATUS,C
	incf	PCLATH,f
	movwf	PCL

langids
	retlw	low lang_1
	retlw	high lang_1
	retlw	low lang_2	; string indexes of different languages
	retlw	high lang_2

lang_1				; english
	retlw	low  String0	; LangIDs
	retlw	high String0
	retlw	low  String1_l1	
	retlw	high String1_l1
	retlw	low  String2_l1
	retlw	high String2_l1
	retlw	low  String3_l1
	retlw	high String3_l1
	retlw	low  String4_l1
	retlw	high String4_l1
	retlw	low  String5_l1
	retlw	high String5_l1

lang_2
	retlw	low  String0	; also point to LangID
	retlw	high String0
	retlw	low  String1_l2
	retlw	high String1_l2
	retlw	low  String2_l2
	retlw	high String2_l2
	retlw	low  String3_l2
	retlw	high String3_l2
	retlw	low  String4_l2
	retlw	high String4_l2
	retlw	low  String5_l2
	retlw	high String5_l2

String0
	retlw	low (String1_l1 - String0)	; length of string 
	retlw	0x03	; descriptor type 3?
	retlw	0x09	; language ID (as defined by MS 0x0409)
	retlw	0x04
	retlw	0x04	; some other language ID for testing
	retlw	0x08
String0_end
String1_l1
	retlw	String2_l1-String1_l1	; length of string
	retlw	0x03	; string descriptor type 3
	retlw	'M'
	retlw	0x00
	retlw	'i'
	retlw	0x00
	retlw	'c'
	retlw	0x00
	retlw	'r'
	retlw	0x00
	retlw	'o'
	retlw	0x00
	retlw	'c'
	retlw	0x00
	retlw	'h'
	retlw	0x00
	retlw	'i'
	retlw	0x00
	retlw	'p'
	retlw	0x00
String2_l1
	retlw	String3_l1-String2_l1
	retlw	0x03
	retlw	'P'
	retlw	0x00
	retlw	'i'
	retlw	0x00
	retlw	'c'
	retlw	0x00
	retlw	'1'
	retlw	0x00
	retlw	'6'
	retlw	0x00
	retlw	'C'
	retlw	0x00
	retlw	'7'
	retlw	0x00
	retlw	'6'
	retlw	0x00
	retlw	'5'
	retlw	0x00
	retlw 	' '
	retlw	0x00
	retlw	'U'
	retlw	0x00
	retlw	'S'
	retlw	0x00
	retlw	'B'
	retlw	0x00
	retlw	' '
	retlw	0x00
	retlw	'G'
	retlw	0x00
	retlw	'A'
	retlw	0x00
	retlw	'm'
	retlw	0x00
	retlw	'e'
	retlw	0x00
	retlw	'p'
	retlw	0x00
	retlw	'a'
	retlw	0x00
	retlw	'd'
	retlw	0x00
String3_l1
	retlw	String4_l1-String3_l1
	retlw	0x03
	retlw	'V'
	retlw	0x00
	retlw	'1'
	retlw	0x00
	retlw	'.'
	retlw	0x00
	retlw	'1'
	retlw	0x00
	retlw	'1'
	retlw	0x00
String4_l1
	retlw	String5_l1-String4_l1
	retlw	0x03
	retlw	'C'
	retlw	0x00
	retlw	'f'
	retlw	0x00
	retlw 	'g'
	retlw	0x00
	retlw 	'1'
	retlw	0x00
String5_l1
	retlw	String6_l1-String5_l1
	retlw	0x03
	retlw	'E'
	retlw	0x00
	retlw	'P'
	retlw	0x00
	retlw	'1'
	retlw	0x00
	retlw	'0'
	retlw	0x00
	retlw	'I'
	retlw	0x00
	retlw	'n'
	retlw	0x00
String6_l1

String1_l2		; lang 2, chinese. String can be totally different than english
	retlw	String2_l2-String1_l2	; length of string
	retlw	0x03	; string descriptor type 3
	retlw	'M'
	retlw	0x00
	retlw	'i'
	retlw	0x00
	retlw	'c'
	retlw	0x00
	retlw	'r'
	retlw	0x00
	retlw	'o'
	retlw	0x00
	retlw	'c'
	retlw	0x00
	retlw	'h'
	retlw	0x00
	retlw	'i'
	retlw	0x00
	retlw	'p'
	retlw	0x00
String2_l2
	retlw	String3_l2-String2_l2
	retlw	0x03
	retlw	'P'
	retlw	0x00
	retlw	'i'
	retlw	0x00
	retlw	'c'
	retlw	0x00
	retlw	'1'
	retlw	0x00
	retlw	'6'
	retlw	0x00
	retlw	'C'
	retlw	0x00
	retlw	'7'
	retlw	0x00
	retlw	'6'
	retlw	0x00
	retlw	'5'
	retlw	0x00
	retlw 	' '
	retlw	0x00
	retlw	'U'
	retlw	0x00
	retlw	'S'
	retlw	0x00
	retlw	'B'
	retlw	0x00
	retlw	' '
	retlw	0x00
	retlw	'G'
	retlw	0x00
	retlw	'a'
	retlw	0x00
	retlw	'm'
	retlw	0x00
	retlw	'e'
	retlw	0x00
	retlw	'p'
	retlw	0x00
	retlw	'a'
	retlw	0x00
	retlw	'd'
	retlw	0x00
String3_l2
	retlw	String4_l2-String3_l2
	retlw	0x03
	retlw	'B'
	retlw	0x00
	retlw	'e'
	retlw	0x00
	retlw	't'
	retlw	0x00
	retlw	'a'
	retlw	0x00
String4_l2
	retlw	String5_l2-String4_l2
	retlw	0x03
	retlw	'C'
	retlw	0x00
	retlw	'f'
	retlw	0x00
	retlw 	'g'
	retlw	0x00
	retlw 	'1'
	retlw	0x00
String5_l2
	retlw	String6_l2-String5_l2
	retlw	0x03
	retlw	'E'
	retlw	0x00
	retlw	'P'
	retlw	0x00
	retlw	'1'
	retlw	0x00
	retlw	'0'
	retlw	0x00
	retlw	'I'
	retlw	0x00
	retlw	'n'
	retlw	0x00
String6_l2

    end