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Successive ST "E" series implemented some revamped graphics and add an enhanced DMA channel that plays better digitalized samples (CPU intensive) up to two 8-bit PCM channels which can replay stereo sound at 6,25 / 125 / 25 / 50 kHz.Īudio Xenon game sountrack with YM CHIP + PCM speech sample playback HEARĮNVELOPE a single 4-segments EG with 8 different preset shapes (4 + 4 inverted) including sawtooth and triangle waveforms.Īlthough there is no filter structure nor dedicated LFO, many programming tricks allow to create some interesting advanced effects.
#Amiga mac emulator midi generator
THE CHIP The audio chip manages 1 noise generator + 3 square tone generators with variable width- also each voice has 4096 different pitches, not much other control on single voice but an individual volume control (at 4 bit resolution). The YM2149 is a quasi-clone of the famous IC AY38910 (spectrum ZX, MSX) originally designed by by General Instruments and definitely less powerful than a simple SID from older generation Commodore 64 SID. Generally games uses low and med resolutions while hi-res needs custom monitors, although some third-part VGA interface are available (or make it yourself with DIY schematics).ĪTARI SOUND the sound processor is the IC YM2149F SSG chip (or POKEY) - Software-controlled Sound Generator + 8 bits DAC Texas instruments 0802 medium resolution at 640x200 with 4 colors High resolution at 640x400 pixels monochrome OVERVIEW the classic ST family is based on a single 16-bits Motorola 68000 CPU clocked at 8 MHz with limited multitasking system, while graphic chipset features 3 video resolutions: 13-dins video connector for high resolution hard disk input (uncommon proprietary ACSI) Modem port (25-dins like RS232) + printer port Rear panel terminal connectors vary depending on models, these are from 1040STE: The purpose of this page is not the Atari ST itself as we focus only to SOUND and MUSIC applications related to the retro computer world.ĪTARI 1040 ST PERSONAL COMPUTER the main panel features a classic keyboard with numeric pad.
#Amiga mac emulator midi professional
In counterpart, the Midi implementation boosted the ATARI as one of the most professional computer for musical applications. Unlike the rival Commodore Amiga PAULA, the Yamaha audio chip was not developed specifically for the ST and resulted quite dull. About 10 ST models were available during this period. The Atari ST machines are a series of personal computer released between 19.