clean-up of driver return codes

2023-02-26 20:03:41 +01:00
parent a299ef4210
commit ffa83c32a4
82 changed files with 438 additions and 322 deletions
--- a/libsrc/c64/emd/dtv-himem.s
+++ b/libsrc/c64/emd/dtv-himem.s
@@ -93,15 +93,16 @@ INSTALL:

 ; DTV not found

-        lda     #<EM_ERR_NO_DEVICE
-        ldx     #>EM_ERR_NO_DEVICE
+        lda     #EM_ERR_NO_DEVICE
+        ldx     #0 ; return value is char
        rts

@present:
        ldx     #$FF
        stx     curpage+1               ; Invalidate curpage
-        inx                             ; X = 0
-        txa                             ; A/X = EM_ERR_OK
+        .assert EM_ERR_OK = 0, error
+        inx
+        txa

 ;       rts                             ; Run into UNINSTALL instead