From 13f86bd18a82dc17a37b3caf3efa6d625ba20394 Mon Sep 17 00:00:00 2001
From: yabu76 <yabu76@gmail.com>
Date: Sat, 14 Feb 2026 09:22:12 +0900
Subject: [PATCH] XMODEM-checksum (aka XMODEM-128) and some fixes

Note: XMODEM_SUM refers to the early XMODEM 128bytes/Checksum.
---
 README.md     | 4 ++--
 man/tio.1.in  | 4 ++--
 man/tio.1.txt | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index e3ab066..0e33721 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ when used in combination with [tmux](https://tmux.github.io).
    * Useful for reconnecting when serial device has no serial device by ID
  * Support for non-standard baud rates
  * Support for mark and space parity
- * X-modem (1K/CRC) and Y-modem file upload
+ * X-modem (1K/CRC/Checksum) and Y-modem file upload
  * Support for RS-485 mode
  * List available serial devices
    * By device
@@ -431,7 +431,7 @@ Returns the `tio` table.
 
 Send file using x/y-modem protocol.
 
-Protocol can be any of `XMODEM_1K`, `XMODEM_CRC`, `YMODEM`.
+Protocol can be any of `XMODEM_1K`, `XMODEM_CRC`, `XMODEM_SUM`, `YMODEM`.
 
 #### `tio.ttysearch()`
 
diff --git a/man/tio.1.in b/man/tio.1.in
index aaaf8a5..8caeefb 100644
--- a/man/tio.1.in
+++ b/man/tio.1.in
@@ -426,7 +426,7 @@ Toggle line timestamp mode
 .IP "\fBctrl-t v"
 Show version
 .IP "\fBctrl-t x"
-Send file using the XMODEM-1K or XMODEM-CRC protocol (prompts for file name and protocol)
+Send file using the XMODEM-1K or XMODEM-CRC or XMODEM-SUM protocol (prompts for file name and protocol)
 .IP "\fBctrl-t y"
 Send file using the YMODEM protocol (prompts for file name)
 .IP "\fBctrl-t ctrl-t"
@@ -468,7 +468,7 @@ Returns the tio table.
 .IP "\fBtio.send(file, protocol)"
 Send file using x/y-modem protocol.
 
-Protocol can be any of XMODEM_1K, XMODEM_CRC, YMODEM.
+Protocol can be any of XMODEM_1K, XMODEM_CRC, XMODEM_SUM, YMODEM.
 
 .IP "\fBtio.ttysearch()"
 Search for serial devices.
diff --git a/man/tio.1.txt b/man/tio.1.txt
index 46afb5e..c1efbbc 100644
--- a/man/tio.1.txt
+++ b/man/tio.1.txt
@@ -342,7 +342,7 @@ KEY COMMANDS
 
        ctrl-t v        Show version
 
-       ctrl-t x        Send file using the XMODEM-1K or XMODEM-CRC protocol (prompts for file name and protocol)
+       ctrl-t x        Send file using the XMODEM-1K or XMODEM-CRC or XMODEM-SUM protocol (prompts for file name and protocol)
 
        ctrl-t y        Send file using the YMODEM protocol (prompts for file name)
 
@@ -382,7 +382,7 @@ SCRIPT API
        send(file, protocol)
              Send file using x/y-modem protocol.
 
-             Protocol can be any of XMODEM_1K, XMODEM_CRC, YMODEM.
+             Protocol can be any of XMODEM_1K, XMODEM_CRC, XMODEM_SUM, YMODEM.
 
        tty_search()
              Search for serial devices.