For example: |
|
Output_Byte | = 01010101b |
Line_Number | = 3 |
Status | = 1 |
00000001b | (1 decimal) |
|
|
(Line_Number) = | 00001000b |
| |
| XOR | 11111111b |
|
|
| 11110111b (mask 1) | |
| AND | 01010101b | (Output_Byte) |
00000001b | (Status) | 01010101b |
|
(Line_Number) = OR | 00001000b | (mask 2) | |
01011101b (New Output_Byte)
For an example of an application that uses these functions, look at the source code in PPIO.PAS.
PPIO2899 Manual | 17 |
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