diff --git a/libsrc/atari7800/extzp.inc b/libsrc/atari7800/extzp.inc
new file mode 100644
index 000000000..7b24ce0d9
--- /dev/null
+++ b/libsrc/atari7800/extzp.inc
@@ -0,0 +1,11 @@
+;
+; extzp.inc for the Atari 7800
+;
+; Karri Kaksonen, 2022-04-05
+;
+; Assembler include file that imports the runtime zero page locations used
+; by the atari7800 runtime, ready for usage in asm code.
+;
+
+        .global         ptr7800: zp
+
diff --git a/libsrc/atari7800/extzp.s b/libsrc/atari7800/extzp.s
new file mode 100644
index 000000000..384731941
--- /dev/null
+++ b/libsrc/atari7800/extzp.s
@@ -0,0 +1,11 @@
+;
+; Karri Kaksonen, 2022-04-05
+;
+; zeropage locations for exclusive use by the library
+;
+
+        .include "extzp.inc"
+
+        .segment "EXTZP" : zeropage
+
+ptr7800:        .res 2