HP 2641A Reference Manual page 100

BYTE 0
PRIMARY TERMINAL STATUS
DISPLAY MEMORY SIZE BYTE 3 LATCHING KEYS
Status
The amount
01
display memory (blocks
01 1K)
available in the terminal is returned.
The amount can range lrom 4096 to 12,288 byles.
CAPS LOCK Key
1 = upper case only
o
=
upper and lower case
BLOCK MODE Key
1
=
block mode
o
= character mode
BYTE 1
KEYBOARD INTERFACE SWITCHES (A-D)
BYTE 4 TRANSFER PENDING FLAGS
Switch D
Page/Line
1 = open (Page)
o
=
closed (Line)
Switch C
(End-ol-Line Wraparound)
1
= open (Disabled)
o
=
closed (Enabled)
L
Switch A
(Function Key Transmission)
1
=
open (Transmitted)
o
= closed (Not transmitted)
Switch B
(Space Overwrite Latch)
1
=
open (Enabled)
o
= closed (Disabled)
S"ooda", Statu, Peod'o,
I I
1
=
yes
0= no
ENTER Key Pending
1
=
yes
0= no
l
Cursor Sense Pending
1
=
yes
0= no
Function Key Pending
1
=
yes
0= no
ReIer to Section V lor a detailed description 01 Keyboard Interlace switches.
BYTE 2 KEYBOARD INTERFACE SWITCHES (E-H) BYTE 5 ERROR FLAGS
Switch E (Tape Mode)
1= open (Disabled)
o
=
closed (Enabled)
Switch F (Fast Binary Read)
1
= open (Switch to 9600 baud)
o
= closed (Retain speed)
?e:I~~r;~ror
=J L
~a~ap~~I~~r
buffer
o
=
no error overflow error
o
=
no error
Loader Checksum Self Test
1
=
no error
1
=
no error
o
= error
0
= error
ReIer to Section V lor a detailed description 01 Keyboard Interface switches.
BYTE 6 DEVICE TRANSFER PENDING FLAGS
L
L
Device Status Pending
1
=
yes
0= no
Device Completion
Pending
1
=
yes
0= no
6-3