Xerox 4215 Reference Manual page 208

COAX COMMUNICATIONS BUFFER
Printer Output Area
Address
X'0000'
X'0001'
X'0002'
X'0003'
X'0004'
X'0005'
X'0006'
X'0007
to
X'0009'
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D-2
The Printer Output Area (POA) that occupies locations X'0000' to
X'000F' of the Printer Communications Interface Area (PCIA)
contains information regarding printer status and configuration.
The POA is written by the printer and read by the cluster
controller.
Table D-2. Printer output area
Function
Status Bit 0
Register Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Key Bit 0—2
Status Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Key Code X'50'
Input Code X'5F'
Code Code X'5E'
Code X'5D'
Code X'6B'
Code X'6F'
Sense Code X'01'
Data Code X'02'
Code X'03'
Code X'04'
Inbound
Data
Length
Extended Bit 0—7
Status
Reserved
Description
0—Address 0006 is reserved
Data check
Order complete
Equipment check (hardware or PCIA error)
Operator intervention required
Sense data available (see byte 3)
Input code (see byte 2) available
(PA key pressed)
Valid switch transition (see byte 1)
Reserved
0—Disable base color switch off
0—Monochrome output only
0—Mono/Dual switch in mono state
1—Mono/Dual switch in dual state
0—Single/Double space switch in single state
1—Single/Double space switch in double state
0—6/8 LPI switch in 6 LPI state
1—6/8 LPI switch in 8 LPI state
Attention (Program Attention) PA, key pressed
while in receive state
PA1 key pressed
PA2 key pressed
No PA key pressed
Inbound data available
LU1 mode inbound data without FM header
Cancel key pressed (in SCS mode)
Invalid control code parameter
Invalid SCS control code
Order reject
Reserved
XEROX MRP FAMILY COAX COMMAND REFERENCE