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2-6. Logic C3 PCBA
p. Front Panel Interface
-
ENABLE SET (PDATA input), to HI on front panel
-
RESET NPLOAD
-
RESET PCLK and write to NFDATAW port ($40084) eight times, then read from
NFPDATA ($40084) for the high byte.
-
Write to NFPDATAW ($40084) eight more times and read NFPDATA port ($40084) for
the low byte.
The switches and fault status in this 16-bit word have the bit assignments as described in Table
2-7.
Table 2-7. Front Panel and Fault Status Assignments
Key
Paper Advance
Clear Fault
Config Value
Form Length
Print Mode
Set TOF
Form Feed
On Line
Run/Stop
Lock Key
Config Menu
Line Spacing
N/C
Paper Out
Platen Open
Ribbon Fault
NFPDATAW
This permits writes to the shift register latch and enable shifting of data to/from the front panel.
NPCLK
PLCK allows shifting of data in/out of Front Panel if toggled.
PLOAD
When set, allows the shift register latch to load with the data but data during NFPDATAW active.
When reset, permits the serial loading of data to the front panel.
P6040/P6080 Principles of Operation
-
continued
-continued
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
40084 when writing only
40108
RESET
4010A
SET
4010C
RESET
4010E
SET
Hex Code
8000
4000
2000
1000
0800
0400
0200
0100
0080
0040
0020
0010
0008
0004
0002
0001
2-29
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