[comp.lang.asm370] ask...

FOHACUNA@UCHDCI01.BITNET (04/08/90)

Hello, this is my first time that I ask something at ASS370 and it's :
How can I make a assembler program that make this:

  - Disabled the key ALT PA1 and ALT PA2 ??????

  I am making a reading routine and I don't want that others persons
 interrupts my program with ALT PA1 or ALT PA2. I hope your answer.

   Thanks in advance.

                                  Sergio Cruz.

PROHVK38@TREARN.BITNET (orhan) (04/10/90)

       CCW control bytes controls BREAK KEY enable/disable.



CTL0     EQU   X'00'             write (break), read buffer
CTL1     EQU   X'10'             write
CTL2     EQU   X'20'             write structured field
CTL3     EQU   X'80'             erase/write (break), read modify
CTL4     EQU   X'90'             erase/write
CTL5     EQU   X'C0'             erase/write alternate (break)
CTL6     EQU   X'D0'             erase/write alternate