mov bx, CodePageID ;code page to return table for
mov cx, 5 ;size of buffer (must be at least 5)
mov dx, CountryCode ;country code to return table for
mov di, seg Table
mov es, dx
mov di, offset Table ;es:di points to buffer for ptr to table
mov ax, 6504h ;Get Filename Uppercase Table
int 21h
jc error_handler ;carry set means error
Get Filename Uppercase Table (Function 6504h) returns the address of the filename uppercase table for the specified country code and code page. The table maps extended ASCII characters in filenames (characters with ASCII values greater than 128) to their uppercase equivalents.
CodePageID
Identifies the code page to return the table for. This parameter can be one of the following values:
| Value | Meaning |
| 437 | United States |
| 850 | Multilingual (Latin I) |
| 852 | Slavic (Latin II) |
| 860 | Portuguese |
| 863 | Canadian-French |
| 865 | Nordic |
If this parameter is 0FFFFh, MS-DOS returns a table for the current code page.
CountryCode
Specifies the country code to return the table for. This parameter can be one of the following values:
| Value | Meaning |
| 001 | United States |
| 002 | Canadian-French |
| 003 | Latin America |
| 031 | Netherlands |
| 032 | Belgium |
| 033 | France |
| 034 | Spain |
| 036 | Hungary |
| 038 | Yugoslavia |
| 039 | Italy |
| 041 | Switzerland |
| 042 | Czechoslovakia |
| 044 | United Kingdom |
| 045 | Denmark |
| 046 | Sweden |
| 047 | Norway |
| 048 | Poland |
| 049 | Germany |
| 055 | Brazil |
| 061 | International English |
| 351 | Portugal |
| 358 | Finland |
If this parameter is 0FFFFh, MS-DOS returns the table for the current country.
Table
Points to a buffer in which MS-DOS places the 8-bit identifier (04h) of the filename uppercase table and the 32-bit address (segment:offset) of the table. The buffer must be at least 5 bytes long.
If the function is successful, the carry flag is clear and the 32-bit address of the filename uppercase table is copied to the buffer pointed to by the Table parameter. Otherwise, the carry flag is set and the AX register contains an error value, which may be one of the following:
| Value | Name |
| 0001h | ERROR_INVALID_FUNCTION |
| 0002h | ERROR_FILE_NOT_FOUND |
This function returns 0001h (ERROR_INVALID_FUNCTION) if the buffer size specified by the CX register is less than 5.
This function returns 0002h (ERROR_FILE_NOT_FOUND) if MS-DOS cannot retrieve country information for the specified code page and country code.
The filename uppercase table starts with a 16-bit value that specifies the length of the table; the remainder of the table specifies the uppercase equivalents of the ASCII characters from 80h to 0FFh.
Function 38h Get/Set Country Information
Function 6501h Get Extended Country Information
Function 6502h Get Uppercase Table
Function 6601h Get Global Code Page
Function 6602h Set Global Code Page