---
title: "Trouble with Corrupted Files?"
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url: "http://localhost/article/trouble-with-corrupted-files/"
markdown_url: "http://localhost/article/trouble-with-corrupted-files.md"
published_at: "2026-03-14T00:06:10+00:00"
modified_at: "2026-03-14T00:06:11+00:00"
featured_image:
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excerpt: "Explains why TS2068 BASIC files downloaded from PC-based BBSs via Xmodem become corrupted: Xmodem pads the last 128-byte block with garbage bytes that follow the final program line. Solution uses HOT-Z v1.81 (loaded at address 50416) in hex-edit mode to replace the end-of-program byte (DEC 14) with DEC 13 followed by DEC 128, and zero…"
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  title: "The RAMTOP"
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    title: "The RAMTOP Winter 1990"
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pages: "9"
pubdate: "Winter 1990"
archive_link: false
---

# Trouble with Corrupted Files?

Explains why TS2068 BASIC files downloaded from PC-based BBSs via Xmodem become corrupted: Xmodem pads the last 128-byte block with garbage bytes that follow the final program line. Solution uses HOT-Z v1.81 (loaded at address 50416) in hex-edit mode to replace the end-of-program byte (DEC 14) with DEC 13 followed by DEC 128, and zero out the next 10 bytes. Step-by-step procedure with memory address illustration.