---
title: "Printer On/Off Detection Programs"
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published_at: "2026-03-13T23:38:43+00:00"
modified_at: "2026-03-13T23:38:44+00:00"
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excerpt: "Two short TS2068 BASIC programs using machine code REM statements and USR calls to detect whether the TS2040 printer is currently on or off, printing a corresponding status message. Program 1 uses POKE 26516,73 and tests USR 16514 against 16383; Program 2 (with FLASH) uses a similar approach with CLS reset. Practical safety check before…"
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    title: "Timelinez v2 n9"
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pubdate: "September 1984"
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---

# Printer On/Off Detection Programs

Two short TS2068 BASIC programs using machine code REM statements and USR calls to detect whether the TS2040 printer is currently on or off, printing a corresponding status message. Program 1 uses POKE 26516,73 and tests USR 16514 against 16383; Program 2 (with FLASH) uses a similar approach with CLS reset. Practical safety check before running programs that would crash if the printer is off when called.