cc65/libsrc/plus4/kplot.s

;
; Ullrich von Bassewitz, 22.11.2002
;
; PLOT replacement function
;

        .export         PLOT

.scope  KERNAL
        .include        "cbm_kernal.inc"
.endscope

        .include        "plus4.inc"

.segment        "LOWCODE"               ; Must go into low memory

.proc   PLOT
        sta     ENABLE_ROM              ; Enable the ROM
        jsr     KERNAL::PLOT            ; Call the ROM routine
        sta     ENABLE_RAM              ; Switch back to RAM
        rts                             ; Return to caller
.endproc
More banking support git-svn-id: svn://svn.cc65.org/cc65/trunk@1588 b7a2c559-68d2-44c3-8de9-860c34a00d81 2002-11-22 22:24:24 +00:00			`;`
			`; Ullrich von Bassewitz, 22.11.2002`
			`;`
			`; PLOT replacement function`
			`;`

			`.export PLOT`

libsrc/*/kplot.s: Use cbm_kernal.inc symbols, not hardcoded addrs On C64, VIC-20 and Plus/4, the conio library PLOT routine uses direct calls into the Kernal, including the Kernal PLOT routine that we're replacing. These were previously hardcoded addresses; we change these to use the symbols for those routines defined in cbm_kernal.inc. (This changes no functionality.) To do this, we need to import cbm_kernal.inc in a namespace so we don't have a collision between the PLOT that we're defining and the Kernal definition. We also add a UPDCRAMPTR symbol (used by kplot for VIC-20 and C64) to the direct entry kernal routines in in cbm_kernal.inc, and expand the comments describing what the "direct entry" Kernal routines are. <greg.king5@verizon.net> (GitHub: greg-king5) came up with this idea and did initial testing of it. This has been tested on VICE xvic, x64 and xplus4 emulators with a program that does a cputs() call (github.com/0cjs/vic20cc65) to confirm that it works the same way after as it did before. 2019-10-24 04:46:41 +00:00			`.scope KERNAL`
			`.include "cbm_kernal.inc"`
			`.endscope`

More banking support git-svn-id: svn://svn.cc65.org/cc65/trunk@1588 b7a2c559-68d2-44c3-8de9-860c34a00d81 2002-11-22 22:24:24 +00:00			`.include "plus4.inc"`

			`.segment "LOWCODE" ; Must go into low memory`

			`.proc PLOT`
			`sta ENABLE_ROM ; Enable the ROM`
libsrc/*/kplot.s: Use cbm_kernal.inc symbols, not hardcoded addrs On C64, VIC-20 and Plus/4, the conio library PLOT routine uses direct calls into the Kernal, including the Kernal PLOT routine that we're replacing. These were previously hardcoded addresses; we change these to use the symbols for those routines defined in cbm_kernal.inc. (This changes no functionality.) To do this, we need to import cbm_kernal.inc in a namespace so we don't have a collision between the PLOT that we're defining and the Kernal definition. We also add a UPDCRAMPTR symbol (used by kplot for VIC-20 and C64) to the direct entry kernal routines in in cbm_kernal.inc, and expand the comments describing what the "direct entry" Kernal routines are. <greg.king5@verizon.net> (GitHub: greg-king5) came up with this idea and did initial testing of it. This has been tested on VICE xvic, x64 and xplus4 emulators with a program that does a cputs() call (github.com/0cjs/vic20cc65) to confirm that it works the same way after as it did before. 2019-10-24 04:46:41 +00:00			`jsr KERNAL::PLOT ; Call the ROM routine`
More banking support git-svn-id: svn://svn.cc65.org/cc65/trunk@1588 b7a2c559-68d2-44c3-8de9-860c34a00d81 2002-11-22 22:24:24 +00:00			`sta ENABLE_RAM ; Switch back to RAM`
			`rts ; Return to caller`
			`.endproc`