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Add custom cc65 config that makes space for a LOWCODE segment from

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0x800-0x2000

Place some of the tick opcodes there.  This gives enough room for all
but 2 of the op_tick_*_page_n opcodes!

It may be possible to fit the remaining ones into unused RAM in the
language card, but this will require some finesse to get the code in
there.  Or maybe I can optimize enough bytes...

0x300 is used by the loader.system, but there is also still 0x400..0x800
if I don't mind messing up the text page, and 0x200 if I can
get away with using the keyboard buffer.

Something is broken with RESET now though, maybe the reset vector is
pointing somewhere orphaned.
This commit is contained in:
kris 2019-03-09 22:35:56 +00:00
parent 4310034993
commit 4598709a7d
4 changed files with 41 additions and 11 deletions
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6
audiotest/audiotest/Makefile
View File

@ -22,12 +22,12 @@ PGM=audio
# MACHINE = apple2
# MACHINE = apple2-dos33
# MACHINE = apple2-system
# MACHINE = apple2-loader
MACHINE = apple2-loader
# MACHINE = apple2-reboot
# MACHINE = apple2enh
# MACHINE = apple2enh-dos33
# MACHINE = apple2enh-system
MACHINE = apple2enh-loader
# MACHINE = apple2enh-loader
# MACHINE = apple2enh-reboot
# Uncomment the appropriate project type. If your entry point is
@ -39,7 +39,7 @@ PROJECT_TYPE = ca65
# Uncomment and set this to your starting address in Apple II memory
# if necessary:
START_ADDR = 4000
START_ADDR = 800
# Set the default CPU to assemble for. You can change this in the
# body of a .s file using control commands like ".PC02". Uncomment

24
audiotest/audiotest/apple2-asm-hgr.cfg Normal file
View File

@ -0,0 +1,24 @@
# Configuration for assembler programs which don't need a special setup
FEATURES {
STARTADDRESS: default = $0800;
}
SYMBOLS {
__FILETYPE__: type = weak, value = $0006; # ProDOS file type
}
MEMORY {
ZP: file = "", start = $0000, size = $00FF;
HEADER: file = %O, start = %S - $003A, size = $003A;
MAIN: file = %O, define = yes, start = %S, size = $C000 - %S;
BSS: file = "", start = __MAIN_LAST__, size = $C000 - __MAIN_LAST__;
}
SEGMENTS {
ZEROPAGE: load = ZP, type = zp, optional = yes;
EXEHDR: load = HEADER, type = ro, optional = yes;
LOWCODE: load = MAIN, type = ro, optional = yes;
HGR: load = MAIN, type = rw, optional = yes, start = $2000;
CODE: load = MAIN, type = rw start = $4000;
RODATA: load = MAIN, type = ro, optional = yes;
DATA: load = MAIN, type = rw, optional = yes;
BSS: load = BSS, type = bss, optional = yes, define = yes;
}

20
audiotest/audiotest/main.s
View File

@ -8,7 +8,6 @@
.include "apple2.inc"
.org $4000
.proc main
TICK = $c030
@ -115,6 +114,10 @@ FADDR: .byte $C0,$A8,$01,15 ; 192.168.2.1 FOREIGN IP
FPORT: .byte $4E,$20 ; 20000 FOREIGN PORT
MAC: .byte $00,$08,$DC,$01,$02,$03 ; W5100 MAC ADDRESS
.segment "LOWCODE"
JMP RESET
.segment "CODE"
RESET:
LDA #$80 ; reset
STA WMODE
@ -861,7 +864,7 @@ tickident page, 8
LDA WDATA ; 4
NOP ; 2
BIT tick ; 4
JMP .ident(.concat("_op_tick_page_", .string(page), "_tail_16"))
.endmacro
@ -1128,11 +1131,14 @@ op_tick_64 page
op_tick_66 page
.endmacro
.segment "LOWCODE"
op_tick 32
op_tick 33
op_tick 34
op_tick 35
op_tick 36
.segment "CODE"
op_tick 37
op_tick 38
op_tick 39
@ -1153,11 +1159,11 @@ op_tick 53
op_tick 54
op_tick 55
op_tick 56
;op_tick 57
;op_tick 58
;op_tick 59
;op_tick 60
;op_tick 61
op_tick 57
op_tick 58
op_tick 59
op_tick 60
op_tick 61
;op_tick 62
;op_tick 63

2
audiotest/audiotest/make/tail.mk
View File

@ -56,7 +56,7 @@ ifeq ($(BUILD_TYPE),cc65)
MACHCONFIG += -C $(BASE_MACHINE)-system.cfg
else
ifeq ($(PROJECT_TYPE),ca65)
MACHCONFIG += -C $(BASE_MACHINE)-asm.cfg
MACHCONFIG += -C $(BASE_MACHINE)-asm-hgr.cfg
LDFLAGS += -u __EXEHDR__
else
MACHCONFIG += -C $(BASE_MACHINE).cfg