Forgot to add this for v0.77

2018-06-06 15:47:12 -04:00 · 2018-06-06 15:47:12 -04:00 · 8765cfce25
parent 6573b80928
commit 8765cfce25
1 changed files with 11 additions and 0 deletions
--- a/eightballzp_a2e.S
+++ b/eightballzp_a2e.S
@ -0,0 +1,11 @@
+;
+; Apple II zero page is used for pointer for indirect addressing
+
+; $80-$9a are used by cc65 ZP segment so avoid this range
+
+; Zero-page usage is documented in:
+; ProDOS 8 Technical Reference Manual Section A.4
+; The upper half of ZP is generally used by BASIC only, so we can use it.
+
+.exportzp _addrptr   := $a0
+