descript.asm

This firmware translates a PS/2 mouse to a USB mouse. The translator firmware is entirely interrup

    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
    retlw   low  String6_l1
    retlw   high String6_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   '4'
    retlw   0x00
    retlw   '5'
    retlw   0x00
    retlw   '/'
    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   'M'
    retlw   0x00
    retlw   'o'
    retlw   0x00
    retlw   'u'
    retlw   0x00
    retlw   's'
    retlw   0x00
    retlw   'e'
    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   '4'
    retlw   0x00
    retlw   '5'
    retlw   0x00
    retlw   '/'
    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   'M'
    retlw   0x00
    retlw   'o'
    retlw   0x00
    retlw   'u'
    retlw   0x00
    retlw   's'
    retlw   0x00
    retlw   'e'
    retlw   0x00
String3_l2
    retlw   String4_l2-String3_l2
    retlw   0x03
    retlw   'V'
    retlw   0x00
    retlw   '1'
    retlw   0x00
    retlw   '.'
    retlw   0x00
    retlw   '1'
    retlw   0x00
    retlw   '1'
    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