20-1
PC-510 user’s manual
User-defined jumper
Chapter 20:
User-defined jumper
≡
User-defined jumper
Jumpers W4[9-10] and W3[5-6] are user-defined jumper. For program
direction, read the jumper by code in your program.
Table 20-1
User option jumper 1: W4
Pin
Label
Description
[9-10]*
U
User option jumper 1
* = default
Table 20-2
User option jumper 2: W3
Pin
Label
Description
[5-6]*
U2
User option jumper 2
* = default
Read jumpers
This section provides the definition for the Read jumpers function.
Function:
fbh
Subfunction:
0Bh
Purpose:
To read the on-board jumper settings.
Calling registers: Ah
fbh
AL
0Bh
DX
ffffh
Return registers: AL
Jumper information
bit
state
7
Not used
6
Not used
5
Not used
4
Not used
3
Not used
2
Not used
1
User option jumper U2
0
User option jumper U
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