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.
43 lines
744 B
Makefile
43 lines
744 B
Makefile
MAKEFILE_PATH := $(abspath $(lastword $(MAKEFILE_LIST)))
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DIR := $(dir $(MAKEFILE_PATH))
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LIB ?= .
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OPT ?= -O3
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GENERATED ?=
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AARCH = -march=armv4 -mlittle-endian
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CARCH = -mno-thumb-interwork -march=armv4 -mtune=arm7di -mlittle-endian
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CFLAGS += -I$(dir $(MAKEFILE_PATH))/../..
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CXXFLAGS += -std=c++2a
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OBJARCH = -O elf32-littlearm -B armv4
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TARGET = arm-none-eabi-
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include base.mk
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channel.elf: LDSCRIPT = main.lds
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channel.elf: start.o channel.o audio.pcm.o
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sh4_interrupt.elf: LDSCRIPT = main.lds
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sh4_interrupt.elf: start.o sh4_interrupt.o
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clean:
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find -P \
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-regextype posix-egrep \
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-regex '.*\.(o|d|bin|elf|gch)$$' \
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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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