TransAct Ithaca 8000 Programmer's Manual page 190

Programming Codes
[ENQ] <23> Inquire user-store status
ASCII [ENQ] <23>
Hexadecimal 05H 17H
Decimal <5> <23>
Function The [ENQ] <23> command reports on the user-store status.
Response [ACK] <23> <Report> <0>
Where <23> is the echo of command ID. The report is a null terminated string with the
following format:
12345[CR][LF] (Free user store)
12345 Type Name...[CR][LF] (First entry) etc.
12345 Type Name...[CR][LF] (Last entry) <0>
Type The type field describes the type of information.
M = macro
C = character definition
[ENQ] <24> Inquire Color status
ASCII [ENQ] <24>
Hexadecimal 05H 18H
Decimal <5> <24>
Function The [ENQ] <24> command reports Color Cartridge status.
Response [ACK] <24> <Length+40><n
Where <24> Is the echo of command
<n > Secondary Pen Color 0 = Not installed, 1 = Red, 2 = Green, 4 = Blue
1
<n > Primary Pen Color 1 = Red, 2 = Green, 4 = Blue 16 = Black
2
<n > Pen Status
3
bit 0 = Not defined
bit 1 = Not defined
bit 2 = Secondary Cartridge not installed
bit 3 = Primary Cartridge not installed
bit 4 = Secondary Cartridge low on ink.
bit 5 = Primary Cartridge low on ink.
bit 6 = 1 always
bit 7 = 0 always
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Rev D
8000 Programmer's Guide
100-06908