From ac13a6b3fd7421606822bd20c7d847c0756fd32d Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Wed, 4 Oct 2023 09:37:53 +0100 Subject: audio: add Apple Sound Chip (ASC) emulation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The Apple Sound Chip was primarily used by the Macintosh II to generate sound in hardware which was previously handled by the toolbox ROM with software interrupts. Implement both the standard ASC and also the enhanced ASC (EASC) functionality which is used in the Quadra 800. Note that whilst real ASC hardware uses AUDIO_FORMAT_S8, this implementation uses AUDIO_FORMAT_U8 instead because AUDIO_FORMAT_S8 is rarely used and not supported by some audio backends like PulseAudio and DirectSound when played directly with -audiodev out.mixing-engine=off. Co-developed-by: Laurent Vivier Co-developed-by: Volker Rümelin Signed-off-by: Mark Cave-Ayland Message-ID: <20231004083806.757242-8-mark.cave-ayland@ilande.co.uk> Signed-off-by: Laurent Vivier --- MAINTAINERS | 2 ++ 1 file changed, 2 insertions(+) (limited to 'MAINTAINERS') diff --git a/MAINTAINERS b/MAINTAINERS index 38fc8e0..ac865c4 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1231,6 +1231,7 @@ F: hw/display/macfb.c F: hw/block/swim.c F: hw/misc/djmemc.c F: hw/misc/iosb.c +F: hw/audio/asc.c F: hw/m68k/bootinfo.h F: include/standard-headers/asm-m68k/bootinfo.h F: include/standard-headers/asm-m68k/bootinfo-mac.h @@ -1242,6 +1243,7 @@ F: include/hw/m68k/q800.h F: include/hw/m68k/q800-glue.h F: include/hw/misc/djmemc.h F: include/hw/misc/iosb.h +F: include/hw/audio/asc.h virt M: Laurent Vivier -- cgit v1.1