Apple2: implement sleep using MONWAIT

Also publish detect_iigs(), set_iigs_speed() and get_iigs_speed(). Refactor to only store one ostype variable.
2024-01-14 18:27:41 +01:00
parent 92ee03f9e9
commit 166a4b25f7
11 changed files with 277 additions and 17 deletions
--- a/libsrc/apple2/wait.s
+++ b/libsrc/apple2/wait.s
@@ -0,0 +1,20 @@
+;
+; Colin Leroy-Mira, 2024
+;
+; WAIT routine
+;
+
+        .export         WAIT
+
+        .include        "apple2.inc"
+
+        .segment        "LOWCODE"
+
+WAIT:
+        ; Switch in ROM and call WAIT
+        bit     $C082
+        jsr     $FCA8           ; Vector to WAIT routine
+
+        ; Switch in LC bank 2 for R/O and return
+        bit     $C080
+        rts