From 75889c131f24785fa0d59b6db38180ec0e83cd75 Mon Sep 17 00:00:00 2001
From: adiee5 <58359866+adiee5@users.noreply.github.com>
Date: Sat, 4 Oct 2025 18:26:58 +0200
Subject: [PATCH 1/2] add atari XEX format

---
 patterns/xex.hexpat                     |  34 ++++++++++++++++++++++++
 tests/patterns/test_data/xex.hexpat.xex | Bin 0 -> 128 bytes
 2 files changed, 34 insertions(+)
 create mode 100644 patterns/xex.hexpat
 create mode 100644 tests/patterns/test_data/xex.hexpat.xex

diff --git a/patterns/xex.hexpat b/patterns/xex.hexpat
new file mode 100644
index 00000000..6d6ed8ac
--- /dev/null
+++ b/patterns/xex.hexpat
@@ -0,0 +1,34 @@
+#pragma author Adiee5
+#pragma description Atari 8-bit binary format (.xex)
+#pragma endian little
+#pragma magic [ FF FF ] @ 0
+
+import std.mem;
+import std.io;
+
+u16 header @ 0;
+
+if (header != 0xFFFF)
+    std::error("Not a valid XEX file");
+    
+fn hex_dec_addr(u16 num){
+    return std::format("0x{:04X} ({})", num, num);
+};
+
+struct block {
+    u16 start [[comment("Address of the first byte"), format("hex_dec_addr")]];
+    if (start == 0xFFFF) continue; //an unnecessary header to be ignored
+    u16 end [[comment("Address of the last byte"), format("hex_dec_addr")]];
+    
+    // since 1 and 2 byte blocks sometimes have special meanings,
+    // we make them regural variables instead of byte arrays, 
+    // so that reading their values from the GUI is easier
+    match (end-start){
+        (0): u8 data;
+        (1): u16 data [[format("hex_dec_addr")]];
+        (_): u8 data[end-start+1];
+    }
+        
+};
+
+block data_blocks[while(!std::mem::eof())] @ 2 [[name("Data Blocks")]];
\ No newline at end of file
diff --git a/tests/patterns/test_data/xex.hexpat.xex b/tests/patterns/test_data/xex.hexpat.xex
new file mode 100644
index 0000000000000000000000000000000000000000..41c2aadac4072050b23256bff9ef4f907d88f717
GIT binary patch
literal 128
zcmaKj%L#xm3_xQp9y);6IE}6mX@z2Jp$g*7QAO7%#?Ju0cYRM4vdOIziL}Hdwm$Gg
x$bbg7YZ_UEEYG~FD*S-}s@G!yRDBEiKup&6y-P04)NvTz;3-RJVzk}r>Kp81Dn$SQ

literal 0
HcmV?d00001


From 2eadf1ef96e5e4cc98fd94a3393971bf72ea7125 Mon Sep 17 00:00:00 2001
From: adiee5 <58359866+adiee5@users.noreply.github.com>
Date: Sat, 4 Oct 2025 18:29:47 +0200
Subject: [PATCH 2/2] Update README.md

---
 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index 3d2f2d70..7de6da5e 100644
--- a/README.md
+++ b/README.md
@@ -210,6 +210,7 @@ Everything will immediately show up in ImHex's Content Store and gets bundled wi
 | ZSTD | `application/zstd` | [`patterns/zstd.hexpat`](patterns/zstd.hexpat) | Zstandard compressed data format |
 | MOD | `3d-model/mod` | [`patterns/DMC3HD-Mod.hexpat`](patterns/dmc3_hd_mod.hexpat) | 3D Model files used in Devil May Cry 3 HD Collection |
 | CBM BASIC | | [`commodore_basic.hexpat`](patterns/commodore_basic.hexpat) | Commodore BASIC |
+| Atari XEX | | [`xex.hexpat`](patterns/xex.hexpat) | Atari 8-bit binary format |
 | Terminfo | `application/x-terminfo` and `application/x-terminfo2` | [`patterns/terminfo.hexpat`](patterns/terminfo.hexpat) | Compiled *(legacy and extended)* term info entry |
 
 ### Scripts