Nvis 5586A
Nvis Technologies Pvt. Ltd.
77
Output parameter
:
None
22.
CALL F000:F098
The LCD which instructed by BL read out 2-bit and change it to hexadecimal to be stored in
AL, also clear the C-Flag as 0. If it is a non-numerical character, the C-Flag will be set to 1
and return once AL is back. The instruction of BL location is the same as (11).
Input Parameter
:
BL indicates the read-in of the first word on the left.
Output Parameter
:
If read a number, then will transfer to hexadecimal to be stored
in AL. The C-flag has to be cleared to 0, otherwise it is taken
back to AL, and moreover the C-Flag is set to 1 in order to
return.
23.
CALL F000:F09C
The LCD which is instructed by BL read out 4-bit, changes to hexadecimal to be stored in
AX, and Clear the C-Flag to 0. If it is non-numerical code, the C-Flag is set to 1 and is also
taken back into AX before it returns. BL instructed the number on the most left, the rule ins
the same as in (11).
Input Parameter
:
BL instructs the first word that is ready to read out from the
most left side.
Output Parameter
:
The number read will be transfer to hexadecimal to be stored in
AX, and clear the C-Flag to 0. Otherwise, the AL code will
return and the C-Flag will be set to 1.
24.
CALL F000:F0A0
Make a beep sound.
Input Parameter
:
None
Output Parameter
:
None
25.
CALL F000:F0A4
Delay subprogram that can be designed, the delay is counted by the counter # 2 of 8253. It
will check the key at the end, in order to jump out the subprogram after it read.
Input Parameter
:
Before input, counter # 2 of 8253 has to be programmed. The
subprogram will check counter # 2 and Jump out once reach
the end.
Output Parameter
:
AL—AL code 00 represents no key-in, otherwise AL code will
be the key-in code. If AH is influenced, it will change
(indefinite value).
Summary of Contents for 5586A
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