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move macros to enable and disable the ROM into a separate include file

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Christian Groessler
2013-09-19 23:21:09 +02:00
parent 47a6390753
commit 60e97f4d96
4 changed files with 97 additions and 85 deletions
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53
libsrc/atari/shadow_ram_handlers.s
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@@ -5,7 +5,6 @@
;
DEBUG = 1
USEWSYNC= 1
CHKBUF = 1 ; check if bounce buffering is needed (bounce buffering is always done if set to 0)
.ifdef __ATARIXL__
@@ -14,6 +13,8 @@ CHKBUF = 1 ; check if bounce buffering is needed (bounce buffering is always don
.include "atari.inc"
.include "save_area.inc"
.include "zeropage.inc"
.include "romswitch.inc"
.import __CHARGEN_START__
.export sram_init
@@ -25,56 +26,6 @@ CHKBUF = 1 ; check if bounce buffering is needed (bounce buffering is always don
BUFSZ = 128 ; bounce buffer size
BUFSZ_SIO = 256
.macro wsync
.if USEWSYNC
sta WSYNC
.endif
.endmacro
.macro disable_rom
lda PORTB
and #$fe
wsync
sta PORTB
lda #>__CHARGEN_START__
sta CHBAS
sta CHBASE
.endmacro
.macro disable_rom_quick
lda PORTB
and #$fe
sta PORTB
lda #>__CHARGEN_START__
sta CHBAS
sta CHBASE
.endmacro
.macro disable_rom_val val
lda val
wsync
sta PORTB
lda #>__CHARGEN_START__
sta CHBAS
sta CHBASE
.endmacro
.macro enable_rom
lda PORTB
ora #1
wsync
sta PORTB
lda #$E0
sta CHBAS
sta CHBASE
.endmacro
.macro enable_rom_quick
lda PORTB
ora #1
sta PORTB
lda #$E0
sta CHBAS
sta CHBASE
.endmacro
.segment "INIT"
; Turn off ROMs, install system and interrupt wrappers, set new chargen pointer