mkarcher wrote on 2024-12-24, 15:42:

None do. The Ensoniq Soundscape had a 68K CPU as separate chip, and the Sequoia (IIRC) chip as "system controller" connecting the CPU to the ROM, RAM, OTTO and ISA bus.

And what does this job on GUS? I don't see any big chip instead. Is it something like it was for IBM FMC with dedicated Z80 onboard and everything needed to manage single YM2161 chip and simple Adlib with only few ICs to manage very similar YM3812?

rkurbatov wrote on 2024-12-24, 16:35:

mkarcher wrote on 2024-12-24, 15:42:

None do. The Ensoniq Soundscape had a 68K CPU as separate chip, and the Sequoia (IIRC) chip as "system controller" connecting the CPU to the ROM, RAM, OTTO and ISA bus.

And what does this job on GUS? I don't see any big chip instead. Is it something like it was for IBM FMC with dedicated Z80 onboard and everything needed to manage single YM2161 chip and simple Adlib with only few ICs to manage very similar YM3812?

The host computer's CPU is doing that job, like on the later Soundscape Vivo [1]. All EMU8000 equipped ISA cards worked liked that as well (the Waveblaster II daughter card used an EMU8000 with a 68000 CPU, but AWE32/AWE64/SB32 based cards had only kept the EMU8000).

[1]
https://www.os2museum.com/wp/dumping-ensoniq- … oundscape-roms/

XMS TSR for SB emulation. That's amazing, my VIVO is coming tomorrow, need to check that in person!

The GF1 was based on the DOCII (not OTTO).

malvern wrote on 2025-03-28, 12:31:

The GF1 was based on the DOCII (not OTTO).

Here are some datasheets for both the DOCII and the OTTO (and few others).

http://zine.r-massive.com/ensoniq-technical-d … and-schematics/