Zack Buhman
0ff0aa5346
This still has issues, notably: Despite the first 16kbytes of audio being loaded prior to starting the AICA ARM7 CPU, the GDROM drive returns "busy" for the following ~48kbytes. This in turn causes the AICA to play audio from uninitialized memory. There is also a separate issue where the timing of changing the start address of the audio channel causes a faint popping sound throughout the audio playback. I should do more timing experiments with the GDROM drive, and improve this example to play the audio with fewer artifacts.
105 lines
1.7 KiB
Makefile
105 lines
1.7 KiB
Makefile
MAKEFILE_PATH := $(abspath $(lastword $(MAKEFILE_LIST)))
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DIR := $(dir $(MAKEFILE_PATH))
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LIB ?= .
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OPT ?= -O3
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GENERATED ?=
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AARCH = --isa=sh4 --little
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CARCH = -m4-single-only -ml
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CFLAGS += -mfsca -funsafe-math-optimizations -ffast-math
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CFLAGS += -I$(dir $(MAKEFILE_PATH))
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CXXFLAGS += -std=c++23
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OBJARCH = -O elf32-shl -B sh4
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TARGET = sh4-none-elf-
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IP_OBJ = \
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systemid.o \
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toc.o \
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sg/sg_sec.o \
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sg/sg_arejp.o \
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sg/sg_areus.o \
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sg/sg_areec.o \
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sg/sg_are00.o \
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sg/sg_are01.o \
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sg/sg_are02.o \
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sg/sg_are03.o \
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sg/sg_are04.o \
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sg/sg_ini.o \
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sg/aip.o
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ip.elf: $(IP_OBJ)
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$(LD) --orphan-handling=error --print-memory-usage -T $(LIB)/ip.lds $^ -o $@
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START_OBJ = \
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start.o \
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runtime.o \
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sh7091/cache.o
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include base.mk
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%.o: %.obj
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$(OBJCOPY) -g \
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--rename-section IP=.text.$* \
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$< $@
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sine.pcm: common.mk
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sox \
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--rate 44100 \
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--encoding signed-integer \
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--bits 16 \
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--channels 1 \
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--endian big \
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--null \
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$@.raw \
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synth 100s sin 700 vol -10dB
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mv $@.raw $@
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%.scramble: %.bin
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./scramble $< $@
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%.iso: %.scramble ip.bin
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mkisofs \
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-C 0,11702 \
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-sysid "SEGA SEGAKATANA" \
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-volid "SAMPLE_GAME_TITLE" \
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-volset "SAMPLE_GAME_TITLE" \
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-publisher "SEGA ENTERPRISES, LTD." \
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-preparer "CRI CD CRAFT VER.2.27" \
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-copyright "COPYRIGH.TXT" \
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-abstract "ABSTRACT.TXT" \
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-biblio "BIBLIOGR.TXT" \
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-G ip.bin \
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-o $@ \
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-graft-points \
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/1ST_READ.BIN=./$< \
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/=./COPYRIGH.TXT \
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/=./ABSTRACT.TXT \
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/=./BIBLIOGR.TXT
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%.cdi: %.iso
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./cdi4dc $< $@ >/dev/null
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include headers.mk
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clean:
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find -P \
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-regextype posix-egrep \
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-regex '.*\.(iso|o|d|bin|elf|cue|gch|scramble)$$' \
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-exec rm {} \;
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.SUFFIXES:
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.INTERMEDIATE:
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.SECONDARY:
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.PHONY: all clean
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%: RCS/%,v
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%: RCS/%
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%: %,v
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%: s.%
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%: SCCS/s.%
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