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Made two indirect jumps through the zero-page go through page $20 on the PC-Engine.

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Greg King 2018-02-28 14:59:52 -05:00
parent 9ca004eacf
commit 549f09db9c
2 changed files with 30 additions and 0 deletions
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16
libsrc/pce/call.s Normal file
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@ -0,0 +1,16 @@
;
; CC65 runtime: call function via pointer in ax
;
; 1998-08-06, Ullrich von Bassewitz
; 2018-02-28, Greg King
;
.export callax
.importzp ptr1
callax: sta ptr1
stx ptr1+1
; The PC-Engine puts the zero-page at $2000.
jmp (ptr1 + $2000) ; go there

14
libsrc/pce/callptr4.s Normal file
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@ -0,0 +1,14 @@
;
; CC65 runtime: call function via pointer in ptr4
;
; 2018-02-28, Greg King
;
.export callptr4
.importzp ptr4
callptr4:
; The PC-Engine puts the zero-page at $2000.
jmp (ptr4 + $2000)