atarixl target: add support for interruptors, adapt TGI drivers

2013-08-25 11:20:27 +02:00
parent 0e09c207e0
commit 4062cb6b6c
6 changed files with 93 additions and 33 deletions
--- a/libsrc/atari/shadow_ram_prepare.s
+++ b/libsrc/atari/shadow_ram_prepare.s
@@ -97,13 +97,20 @@ sramprep:

        ldx     lowadr
        stx     MEMTOP
-        stx     APPMHI
        lda     lowadr+1
        sta     MEMTOP+1
-        sta     APPMHI+1
        lda     lodadr+1
        sta     RAMTOP

+	; set APPMHI to MEMLO (+ 1 for sanity)
+        lda     MEMLO
+        clc
+        adc     #1
+        sta     APPMHI
+        lda     MEMLO+1
+        adc     #0
+        sta     APPMHI+1
+

 ; ... issue a GRAPHICS 0 call (copied'n'pasted from TGI drivers)