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Add a macro for peekbsys

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git-svn-id: svn://svn.cc65.org/cc65/trunk@1596 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2002-11-22 23:45:09 +00:00
parent 86fb1f760a
commit 4800f0d2a7
2 changed files with 45 additions and 2 deletions
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15
include/cbm510.h
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@ -95,6 +95,21 @@ unsigned __fastcall__ peekwsys (unsigned addr);
void __fastcall__ pokebsys (unsigned addr, unsigned char val);
void __fastcall__ pokewsys (unsigned addr, unsigned val);
#if defined(__OPT_i__) && defined(__OPT_s__)
#define peekbsys(addr) \
__AX__ = (addr), \
asm ("sta ptr1"), \
asm ("stx ptr1+1"), \
asm ("ldx $01"), \
asm ("lda #$0F"), \
asm ("sta $01"), \
asm ("ldy #$00"), \
asm ("lda (ptr1),y"), \
asm ("stx $01"), \
asm ("ldx #$00"), \
__AX__
#endif
/* Define hardware */

32
include/cbm610.h
View File

@ -6,7 +6,7 @@
/* */
/* */
/* */
/* (C) 1998-2001 Ullrich von Bassewitz */
/* (C) 1998-2002 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
@ -75,12 +75,40 @@
/* Special routines to write bytes and words in the system bank */
/* Special routines to read/write bytes and words in the system bank */
unsigned char __fastcall__ peekbsys (unsigned addr);
unsigned __fastcall__ peekwsys (unsigned addr);
void __fastcall__ pokebsys (unsigned addr, unsigned char val);
void __fastcall__ pokewsys (unsigned addr, unsigned val);
#if defined(__OPT_i__) && defined(__OPT_s__)
#define peekbsys(addr) \
__AX__ = (addr), \
asm ("sta ptr1"), \
asm ("stx ptr1+1"), \
asm ("ldx $01"), \
asm ("lda #$0F"), \
asm ("sta $01"), \
asm ("ldy #$00"), \
asm ("lda (ptr1),y"), \
asm ("stx $01"), \
asm ("ldx #$00"), \
__AX__
#define pokebsys(addr,val) \
__AX__ = (addr), \
asm ("sta ptr1"), \
asm ("stx ptr1+1"), \
__AX__ = (val), \
asm ("ldx $01"), \
asm ("ldy #$0F"), \
asm ("sty $01"), \
asm ("ldy #$00"), \
asm ("sta (ptr1),y"), \
asm ("stx $01")
#endif
/* Define hardware */